Digitale Option Delta Gamma - Therefore, the risk in ...
Delta Vs Gamma Hedging - nstl.lacasadelcolle.it
Gamma Optionen und die anderen "Griechen"
black scholes - Is the delta of a binary option the same ...
No gods, no kings, only NOPE - or divining the future with options flows. [Part 2: A Random Walk and Price Decoherence]
tl;dr - 1) Stock prices move continuously because different market participants end up having different ideas of the future value of a stock. 2) This difference in valuations is part of the reason we have volatility. 3) IV crush happens as a consequence of future possibilities being extinguished at a binary catalyst like earnings very rapidly, as opposed to the normal slow way. I promise I'm getting to the good parts, but I'm also writing these as a guidebook which I can use later so people never have to talk to me again. In this part I'm going to start veering a bit into the speculation territory (e.g. ideas I believe or have investigated, but aren't necessary well known) but I'm going to make sure those sections are properly marked as speculative (and you can feel free to ignore/dismiss them). Marked as [Lily's Speculation]. As some commenters have pointed out in prior posts, I do not have formal training in mathematical finance/finance (my background is computer science, discrete math, and biology), so often times I may use terms that I've invented which have analogous/existing terms (e.g. the law of surprise is actually the first law of asset pricing applied to derivatives under risk neutral measure, but I didn't know that until I read the papers later). If I mention something wrong, please do feel free to either PM me (not chat) or post a comment, and we can discuss/I can correct it! As always, buyer beware. This is the first section also where you do need to be familiar with the topics I've previously discussed, which I'll add links to shortly (my previous posts: 1) https://www.reddit.com/thecorporation/comments/jck2q6/no_gods_no_kings_only_nope_or_divining_the_future/ 2) https://www.reddit.com/thecorporation/comments/jbzzq4/why_options_trading_sucks_or_the_law_of_surprise/ --- A Random Walk Down Bankruptcy A lot of us have probably seen the term random walk, maybe in the context of A Random Walk Down Wall Street, which seems like a great book I'll add to my list of things to read once I figure out how to control my ADD. It seems obvious, then, what a random walk means - when something is moving, it basically means that the next move is random. So if my stock price is $1 and I can move in $0.01 increments, if the stock price is truly randomly walking, there should be roughly a 50% chance it moves up in the next second (to $1.01) or down (to $0.99). If you've traded for more than a hot minute, this concept should seem obvious, because especially on the intraday, it usually isn't clear why price moves the way it does (despite what chartists want to believe, and I'm sure a ton of people in the comments will tell me why fettucini lines and Batman doji tell them things). For a simple example, we can look at SPY's chart from Friday, Oct 16, 2020: https://preview.redd.it/jgg3kup9dpt51.png?width=1368&format=png&auto=webp&s=bf8e08402ccef20832c96203126b60c23277ccc2 I'm sure again 7 different people can tell me 7 different things about why the chart shape looks the way it does, or how if I delve deeply enough into it I can find out which man I'm going to marry in 2024, but to a rationalist it isn't exactly apparent at why SPY's price declined from 349 to ~348.5 at around 12:30 PM, or why it picked up until about 3 PM and then went into precipitous decline (although I do have theories why it declined EOD, but that's for another post). An extremely clever or bored reader from my previous posts could say, "Is this the price formation you mentioned in the law of surprise post?" and the answer is yes. If we relate it back to the individual buyer or seller, we can explain the concept of a stock price's random walk as such:
Most market participants have an idea of an asset's truevalue (an idealized concept of what an asset is actually worth), which they can derive using models or possibly enough brain damage. However, an asset's value at any given time is not worth one value (usually*), but a spectrum of possible values, usually representing what the asset should be worth in the future. A naive way we can represent this without delving into to much math (because let's face it, most of us fucking hate math) is: Current value of an asset = sum over all (future possible value multiplied by the likelihood of that value)
In actuality, most models aren't that simple, but it does generalize to a ton of more complicated models which you need more than 7th grade math to understand (Black-Scholes, DCF, blah blah blah). While in many cases the first term - future possible value - is well defined (Tesla is worth exactly $420.69 billion in 2021, and maybe we all can agree on that by looking at car sales and Musk tweets), where it gets more interesting is the second term - the likelihood of that value occurring. [In actuality, the price of a stock for instance is way more complicated, because a stock can be sold at any point in the future (versus in my example, just the value in 2021), and needs to account for all values of Tesla at any given point in the future.] How do we estimate the second term - the likelihood of that value occurring? For this class, it actually doesn't matter, because the key concept is this idea: even with all market participants having the same information, we do anticipate that every participant will have a slightly different view of future likelihoods. Why is that? There's many reasons. Some participants may undervalue risk (aka WSB FD/yolos) and therefore weight probabilities of gaining lots of money much more heavily than going bankrupt. Some participants may have alternative data which improves their understanding of what the future values should be, therefore letting them see opportunity. Some participants might overvalue liquidity, and just want to GTFO and thereby accept a haircut on their asset's value to quickly unload it (especially in markets with low liquidity). Some participants may just be yoloing and not even know what Fastly does before putting their account all in weekly puts (god bless you). In the end, it doesn't matter either the why, but the what: because of these diverging interpretations, over time, we can expect the price of an asset to drift from the current value even with no new information added. In most cases, the calculations that market participants use (which I will, as a Lily-ism, call the future expected payoff function, or FEPF) ends up being quite similar in aggregate, and this is why asset prices likely tend to move slightly up and down for no reason (or rather, this is one interpretation of why). At this point, I expect the 20% of you who know what I'm talking about or have a finance background to say, "Oh but blah blah efficient market hypothesis contradicts random walk blah blah blah" and you're correct, but it also legitimately doesn't matter here. In the long run, stock prices are clearly not a random walk, because a stock's value is obviously tied to the company's fundamentals (knock on wood I don't regret saying this in the 2020s). However, intraday, in the absence of new, public information, it becomes a close enough approximation. Also, some of you might wonder what happens when the future expected payoff function (FEPF) I mentioned before ends up wildly diverging for a stock between participants. This could happen because all of us try to short Nikola because it's quite obviously a joke (so our FEPF for Nikola could, let's say, be 0), while the 20 or so remaining bagholders at NikolaCorporation decide that their FEPF of Nikola is $10,000,000 a share). One of the interesting things which intuitively makes sense, is for nearly all stocks, the amount of divergence among market participants in their FEPF increases substantially as you get farther into the future. This intuitively makes sense, even if you've already quit trying to understand what I'm saying. It's quite easy to say, if at 12:51 PM SPY is worth 350.21 that likely at 12:52 PM SPY will be worth 350.10 or 350.30 in all likelihood. Obviously there are cases this doesn't hold, but more likely than not, prices tend to follow each other, and don't gap up/down hard intraday. However, what if I asked you - given SPY is worth 350.21 at 12:51 PM today, what will it be worth in 2022? Many people will then try to half ass some DD about interest rates and Trump fleeing to Ecuador to value SPY at 150, while others will assume bull markets will continue indefinitely and SPY will obviously be 7000 by then. The truth is -- no one actually knows, because if you did, you wouldn't be reading a reddit post on this at 2 AM in your jammies. In fact, if you could somehow figure out the FEPF of all market participants at any given time, assuming no new information occurs, you should be able to roughly predict the true value of an asset infinitely far into the future (hint: this doesn't exactly hold, but again don't @ me). Now if you do have a finance background, I expect gears will have clicked for some of you, and you may see strong analogies between the FEPF divergence I mentioned, and a concept we're all at least partially familiar with - volatility. Volatility and Price Decoherence ("IV Crush") Volatility, just like the Greeks, isn't exactly a real thing. Most of us have some familiarity with implied volatility on options, mostly when we get IV crushed the first time and realize we just lost $3000 on Tesla calls. If we assume that the current price should represent the weighted likelihoods of all future prices (the random walk), volatility implies the following two things:
Volatility reflects the uncertainty of the current price
Volatility reflects the uncertainty of the future price for every point in the future where the asset has value (up to expiry for options)
[Ignore this section if you aren't pedantic] There's obviously more complex mathematics, because I'm sure some of you will argue in the comments that IV doesn't go up monotonically as option expiry date goes longer and longer into the future, and you're correct (this is because asset pricing reflects drift rate and other factors, as well as certain assets like the VIX end up having cost of carry). Volatility in options is interesting as well, because in actuality, it isn't something that can be exactly computed -- it arises as a plug between the idealized value of an option (the modeled price) and the real, market value of an option (the spot price). Additionally, because the makeup of market participants in an asset's market changes over time, and new information also comes in (thereby increasing likelihood of some possibilities and reducing it for others), volatility does not remain constant over time, either. Conceptually, volatility also is pretty easy to understand. But what about our friend, IV crush? I'm sure some of you have bought options to play events, the most common one being earnings reports, which happen quarterly for every company due to regulations. For the more savvy, you might know of expected move, which is a calculation that uses the volatility (and therefore price) increase of at-the-money options about a month out to calculate how much the options market forecasts the underlying stock price to move as a response to ER. Binary Catalyst Events and Price Decoherence Remember what I said about price formation being a gradual, continuous process? In the face of special circumstances, in particularly binary catalyst events - events where the outcome is one of two choices, good (1) or bad (0) - the gradual part gets thrown out the window. Earnings in particular is a common and notable case of a binary event, because the price will go down (assuming the company did not meet the market's expectations) or up (assuming the company exceeded the market's expectations) (it will rarely stay flat, so I'm not going to address that case). Earnings especially is interesting, because unlike other catalytic events, they're pre-scheduled (so the whole market expects them at a certain date/time) and usually have publicly released pre-estimations (guidance, analyst predictions). This separates them from other binary catalysts (e.g. FSLY dipping 30% on guidance update) because the market has ample time to anticipate the event, and participants therefore have time to speculate and hedge on the event. In most binary catalyst events, we see rapid fluctuations in price, usually called a gap up or gap down, which is caused by participants rapidly intaking new information and changing their FEPF accordingly. This is for the most part an anticipated adjustment to the FEPF based on the expectation that earnings is a Very Big Deal (TM), and is the reason why volatility and therefore option premiums increase so dramatically before earnings. What makes earnings so interesting in particular is the dramatic effect it can have on all market participants FEPF, as opposed to let's say a Trump tweet, or more people dying of coronavirus. In lots of cases, especially the FEPF of the short term (3-6 months) rapidly changes in response to updated guidance about a company, causing large portions of the future possibility spectrum to rapidly and spectacularly go to zero. In an instant, your Tesla 10/30 800Cs go from "some value" to "not worth the electrons they're printed on". [Lily's Speculation] This phenomena, I like to call price decoherence, mostly as an analogy to quantum mechanical processes which produce similar results (the collapse of a wavefunction on observation). Price decoherence occurs at a widespread but minor scale continuously, which we normally call price formation (and explains portions of the random walk derivation explained above), but hits a special limit in the face of binary catalyst events, as in an instant rapid portions of the future expected payoff function are extinguished, versus a more gradual process which occurs over time (as an option nears expiration). Price decoherence, mathematically, ends up being a more generalizable case of the phenomenon we all love to hate - IV crush. Price decoherence during earnings collapses the future expected payoff function of a ticker, leading large portions of the option chain to be effectively worthless (IV crush). It has interesting implications, especially in the case of hedged option sellers, our dear Market Makers. This is because given the expectation that they maintain delta-gamma neutral, and now many of the options they have written are now worthless and have 0 delta, what do they now have to do? They have to unwind. [/Lily's Speculation] - Lily
No gods, no kings, only NOPE - or divining the future with options flows. [Part 3: Hedge Winding, Unwinding, and the NOPE]
Hello friends! We're on the last post of this series ("A Gentle Introduction to NOPE"), where we get to use all the Big Boy Concepts (TM) we've discussed in the prior posts and put them all together. Some words before we begin:
This post will be massively theoretical, in the sense that my own speculation and inferences will be largely peppered throughout the post. Are those speculations right? I think so, or I wouldn't be posting it, but they could also be incorrect.
I will briefly touch on using the NOPE this slide, but I will make a secondary post with much more interesting data and trends I've observed. This is primarily for explaining what NOPE is and why it potentially works, and what it potentially measures.
My advice before reading this is to glance at my prior posts, and either read those fully or at least make sure you understand the tl;drs: https://www.reddit.com/thecorporation/collection/27dc72ad-4e78-44cd-a788-811cd666e32a Depending on popular demand, I will also make a last-last post called FAQ, where I'll tabulate interesting questions you guys ask me in the comments! --- So a brief recap before we begin. Market Maker ("Mr. MM"): An individual or firm who makes money off the exchange fees and bid-ask spread for an asset, while usually trying to stay neutral about the direction the asset moves. Delta-gamma hedging: The process Mr. MM uses to stay neutral when selling you shitty OTM options, by buying/selling shares (usually) of the underlying as the price moves. Law of Surprise [Lily-ism]: Effectively, the expected profit of an options trade is zero for both the seller and the buyer. Random Walk: A special case of a deeper probability probability called a martingale, which basically models stocks or similar phenomena randomly moving every step they take (for stocks, roughly every millisecond). This is one of the most popular views of how stock prices move, especially on short timescales. Future Expected Payoff Function [Lily-ism]: This is some hidden function that every market participant has about an asset, which more or less models all the possible future probabilities/values of the assets to arrive at a "fair market price". This is a more generalized case of a pricing model like Black-Scholes, or DCF. Counter-party: The opposite side of your trade (if you sell an option, they buy it; if you buy an option, they sell it). Price decoherence ]Lily-ism]: A more generalized notion of IV Crush, price decoherence happens when instead of the FEPF changing gradually over time (price formation), the FEPF rapidly changes, due usually to new information being added to the system (e.g. Vermin Supreme winning the 2020 election). --- One of the most popular gambling events for option traders to play is earnings announcements, and I do owe the concept of NOPE to hypothesizing specifically about the behavior of stock prices at earnings. Much like a black hole in quantum mechanics, most conventional theories about how price should work rapidly break down briefly before, during, and after ER, and generally experienced traders tend to shy away from playing earnings, given their similar unpredictability. Before we start: what is NOPE? NOPE is a funny backronym from Net Options Pricing Effect, which in its most basic sense, measures the impact option delta has on the underlying price, as compared to share price. When I first started investigating NOPE, I called it OPE (options pricing effect), but NOPE sounds funnier. The formula for it is dead simple, but I also have no idea how to do LaTeX on reddit, so this is the best I have: https://preview.redd.it/ais37icfkwt51.png?width=826&format=png&auto=webp&s=3feb6960f15a336fa678e945d93b399a8e59bb49 Since I've already encountered this, put delta in this case is the absolute value (50 delta) to represent a put. If you represent put delta as a negative (the conventional way), do not subtract it; add it. To keep this simple for the non-mathematically minded: the NOPE today is equal to the weighted sum (weighted by volume) of the delta of every call minus the delta of every put for all options chains extending from today to infinity. Finally, we then divide that number by the # of shares traded today in the market session (ignoring pre-market and post-market, since options cannot trade during those times). Effectively, NOPE is a rough and dirty way to approximate the impact of delta-gamma hedging as a function of share volume, with us hand-waving the following factors:
To keep calculations simple, we assume that all counter-parties are hedged. This is obviously not true, especially for idiots who believe theta ganging is safe, but holds largely true especially for highly liquid tickers, or tickers will designated market makers (e.g. any ticker in the NASDAQ, for instance).
We assume that all hedging takes place via shares. For SPY and other products tracking the S&P, for instance, market makers can actually hedge via futures or other options. This has the benefit for large positions of not moving the underlying price, but still makes up a fairly small amount of hedges compared to shares.
Winding and Unwinding
I briefly touched on this in a past post, but two properties of NOPE seem to apply well to EER-like behavior (aka any binary catalyst event):
NOPE measures sentiment - In general, the options market is seen as better informed than share traders (e.g. insiders trade via options, because of leverage + easier to mask positions). Therefore, a heavy call/put skew is usually seen as a bullish sign, while the reverse is also true.
NOPE measures system stability
I'm not going to one-sentence explain #2, because why say in one sentence what I can write 1000 words on. In short, NOPE intends to measure sensitivity of the system (the ticker) to disruption. This makes sense, when you view it in the context of delta-gamma hedging. When we assume all counter-parties are hedged, this means an absolutely massive amount of shares get sold/purchased when the underlying price moves. This is because of the following: a) Assume I, Mr. MM sell 1000 call options for NKLA 25C 10/23 and 300 put options for NKLA 15p 10/23. I'm just going to make up deltas because it's too much effort to calculate them - 30 delta call, 20 delta put. This implies Mr. MM needs the following to delta hedge: (1000 call options * 30 shares to buy for each) [to balance out writing calls) - (300 put options * 20 shares to sell for each) = 24,000net shares Mr. MM needs to acquire to balance out his deltas/be fully neutral. b) This works well when NKLA is at $20. But what about when it hits $19 (because it only can go down, just like their trucks). Thanks to gamma, now we have to recompute the deltas, because they've changed for both the calls (they went down) and for the puts (they went up). Let's say to keep it simple that now my calls are 20 delta, and my puts are 30 delta. From the 24,000 net shares, Mr. MM has to now have: (1000 call options * 20 shares to have for each) - (300 put options * 30 shares to sell for each) = 11,000 shares. Therefore, with a $1 shift in price, now to hedge and be indifferent to direction, Mr. MM has to go from 24,000 shares to 11,000 shares, meaning he has to sell 13,000 shares ASAP, or take on increased risk. Now, you might be saying, "13,000 shares seems small. How would this disrupt the system?" (This process, by the way, is called hedge unwinding) It won't, in this example. But across thousands of MMs and millions of contracts, this can - especially in highly optioned tickers - make up a substantial fraction of the net flow of shares per day. And as we know from our desk example, the buying or selling of shares directly changes the price of the stock itself. This, by the way, is why the NOPE formula takes the shape it does. Some astute readers might notice it looks similar to GEX, which is not a coincidence. GEX however replaces daily volume with open interest, and measures gamma over delta, which I did not find good statistical evidence to support, especially for earnings. So, with our example above, why does NOPE measure system stability? We can assume for argument's sake that if someone buys a share of NKLA, they're fine with moderate price swings (+- $20 since it's NKLA, obviously), and in it for the long/medium haul. And in most cases this is fine - we can own stock and not worry about minor swings in price. But market makers can't* (they can, but it exposes them to risk), because of how delta works. In fact, for most institutional market makers, they have clearly defined delta limits by end of day, and even small price changes require them to rebalance their hedges. This over the whole market adds up to a lot shares moving, just to balance out your stupid Robinhood YOLOs. While there are some tricks (dark pools, block trades) to not impact the price of the underlying, the reality is that the more options contracts there are on a ticker, the more outsized influence it will have on the ticker's price. This can technically be exactly balanced, if option put delta is equal to option call delta, but never actually ends up being the case. And unlike shares traded, the shares representing the options are more unstable, meaning they will be sold/bought in response to small price shifts. And will end up magnifying those price shifts, accordingly.
NOPE and Earnings
So we have a new shiny indicator, NOPE. What does it actually mean and do? There's much literature going back to the 1980s that options markets do have some level of predictiveness towards earnings, which makes sense intuitively. Unlike shares markets, where you can continue to hold your share even if it dips 5%, in options you get access to expanded opportunity to make riches... and losses. An options trader betting on earnings is making a risky and therefore informed bet that he or she knows the outcome, versus a share trader who might be comfortable bagholding in the worst case scenario. As I've mentioned largely in comments on my prior posts, earnings is a special case because, unlike popular misconceptions, stocks do not go up and down solely due to analyst expectations being meet, beat, or missed. In fact, stock prices move according to the consensus market expectation, which is a function of all the participants' FEPF on that ticker. This is why the price moves so dramatically - even if a stock beats, it might not beat enough to justify the high price tag (FSLY); even if a stock misses, it might have spectacular guidance or maybe the market just was assuming it would go bankrupt instead. To look at the impact of NOPE and why it may play a role in post-earnings-announcement immediate price moves, let's review the following cases:
Stock Meets/Exceeds Market Expectations (aka price goes up) - In the general case, we would anticipate post-ER market participants value the stock at a higher price, pushing it up rapidly. If there's a high absolute value of NOPE on said ticker, this should end up magnifying the positive move since:
a) If NOPE is high negative - This means a ton of put buying, which means a lot of those puts are now worthless (due to price decoherence). This means that to stay delta neutral, market makers need to close out their sold/shorted shares, buying them, and pushing the stock price up. b) If NOPE is high positive - This means a ton of call buying, which means a lot of puts are now worthless (see a) but also a lot of calls are now worth more. This means that to stay delta neutral, market makers need to close out their sold/shorted shares AND also buy more shares to cover their calls, pushing the stock price up. 2) Stock Meets/Misses Market Expectations (aka price goes down)- Inversely to what I mentioned above, this should push to the stock price down, fairly immediately. If there's a high absolute value of NOPE on said ticker, this should end up magnifying the negative move since: a) If NOPE is high negative - This means a ton of put buying, which means a lot of those puts are now worth more, and a lot of calls are now worth less/worth less (due to price decoherence). This means that to stay delta neutral, market makers need to sell/short more shares, pushing the stock price down. b) If NOPE is high positive - This means a ton of call buying, which means a lot of calls are now worthless (see a) but also a lot of puts are now worth more. This means that to stay delta neutral, market makers need to sell even more shares to keep their calls and puts neutral, pushing the stock price down. --- Based on the above two cases, it should be a bit more clear why NOPE is a measure of sensitivity to system perturbation. While we previously discussed it in the context of magnifying directional move, the truth is it also provides a directional bias to our "random" walk. This is because given a price move in the direction predicted by NOPE, we expect it to be magnified, especially in situations of price decoherence. If a stock price goes up right after an ER report drops, even based on one participant deciding to value the stock higher, this provides a runaway reaction which boosts the stock price (due to hedging factors as well as other participants' behavior) and inures it to drops.
NOPE and NOPE_MAD
I'm going to gloss over this section because this is more statistical methods than anything interesting. In general, if you have enough data, I recommend using NOPE_MAD over NOPE. While NOPE in theory represents a "real" quantity (net option delta over net share delta), NOPE_MAD (the median absolute deviation of NOPE) does not. NOPE_MAD simply answecompare the following:
How exceptional is today's NOPE versus historic baseline (30 days prior)?
How do I compare two tickers' NOPEs effectively (since some tickers, like TSLA, have a baseline positive NOPE, because Elon memes)? In the initial stages, we used just a straight numerical threshold (let's say NOPE >= 20), but that quickly broke down. NOPE_MAD aims to detect anomalies, because anomalies in general give you tendies.
I might add the formula later in Mathenese, but simply put, to find NOPE_MAD you do the following:
Calculate today's NOPE score (this can be done end of day or intraday, with the true value being EOD of course)
Calculate the end of day NOPE scores on the ticker for the previous 30 trading days
Compute the median of the previous 30 trading days' NOPEs
Find today's deviation as compared to the MAD calculated by: [(today's NOPE) - (median NOPE of last 30 days)] / (median absolute deviation of last 30 days)
This is usually reported as sigma (σ), and has a few interesting properties:
The mean of NOPE_MAD for any ticker is almost exactly 0.
[Lily's Speculation's Speculation] NOPE_MAD acts like a spring, and has a tendency to reverse direction as a function of its magnitude. No proof on this yet, but exploring it!
Using the NOPE to predict ER
So the last section was a lot of words and theory, and a lot of what I'm mentioning here is empirically derived (aka I've tested it out, versus just blabbered). In general, the following holds true:
3 sigma NOPE_MAD tends to be "the threshold": For very low NOPE_MAD magnitudes (+- 1 sigma), it's effectively just noise, and directionality prediction is low, if not non-existent. It's not exactly like 3 sigma is a play and 2.9 sigma is not a play; NOPE_MAD accuracy increases as NOPE_MAD magnitude (either positive or negative) increases.
NOPE_MAD is only useful on highly optioned tickers: In general, I introduce another parameter for sifting through "candidate" ERs to play: option volume * 100/share volume. When this ends up over let's say 0.4, NOPE_MAD provides a fairly good window into predicting earnings behavior.
NOPE_MAD only predicts during the after-market/pre-market session: I also have no idea if this is true, but my hunch is that next day behavior is mostly random and driven by market movement versus earnings behavior. NOPE_MAD for now only predicts direction of price movements right between the release of the ER report (AH or PM) and the ending of that market session. This is why in general I recommend playing shares, not options for ER (since you can sell during the AH/PM).
NOPE_MAD only predicts direction of price movement: This isn't exactly true, but it's all I feel comfortable stating given the data I have. On observation of ~2700 data points of ER-ticker events since Mar 2019 (SPY 500), I only so far feel comfortable predicting whether stock price goes up (>0 percent difference) or down (<0 price difference). This is +1 for why I usually play with shares.
Some statistics: #0) As a baseline/null hypothesis, after ER on the SPY500 since Mar 2019, 50-51% price movements in the AH/PM are positive (>0) and ~46-47% are negative (<0). #1) For NOPE_MAD >= +3 sigma, roughly 68% of price movements are positive after earnings. #2) For NOPE_MAD <= -3 sigma, roughly 29% of price movements are positive after earnings. #3) When using a logistic model of only data including NOPE_MAD >= +3 sigma or NOPE_MAD <= -3 sigma, and option/share vol >= 0.4 (around 25% of all ERs observed), I was able to achieve 78% predictive accuracy on direction.
Caveats/Read This
Like all models, NOPE is wrong, but perhaps useful. It's also fairly new (I started working on it around early August 2020), and in fact, my initial hypothesis was exactly incorrect (I thought the opposite would happen, actually). Similarly, as commenters have pointed out, the timeline of data I'm using is fairly compressed (since Mar 2019), and trends and models do change. In fact, I've noticed significantly lower accuracy since the coronavirus recession (when I measured it in early September), but I attribute this mostly to a smaller date range, more market volatility, and honestly, dumber option traders (~65% accuracy versus nearly 80%). My advice so far if you do play ER with the NOPE method is to use it as following:
Buy/short shares approximately right when the market closes before ER. Ideally even buying it right before the earnings report drops in the AH session is not a bad idea if you can.
Sell/buy to close said shares at the first sign of major weakness (e.g. if the NOPE predicted outcome is incorrect).
Sell/buy to close shares even if it is correct ideally before conference call, or by the end of the after-market/pre-market session.
Only play tickers with high NOPE as well as high option/share vol.
--- In my next post, which may be in a few days, I'll talk about potential use cases for SPY and intraday trends, but I wanted to make sure this wasn't like 7000 words by itself. Cheers. - Lily
Today we’re proud to bring you MAME 0.208. There are some big improvements to SunPlus SPG240/SPG280 audio emulation. Not only does this greatly improve the enjoyability of the JAKKS Pacific TV games, it’s also timed perfectly for the addition of the Fisher-Price I Can Play Piano music teaching system. That’s not the only newly supported music system this month: we’ve added Jumping Popira, and Popira 2 has been promoted to working. Continuing with the audio theme, moralrecordings fixed BSMT 2000 4-bit ADPCM sample playback, cam900 added support for the VRC7 as a separate device with its unique instrument patches, and schnitzeltony improved Atari POKEY performance substantially. Newly supported TV games include Disney, Disney and Friends, Justice League and SpongeBob SquarePants – The Fry Cook Games from JAKKS Pacific, and XaviX titles Geigeki Go Go Shooting, Gururin World and MX Dirt Rebel. You’ll be able to enjoy the XaviX-based games even more now with improvements to the colour palette. The Nintendo Game & Watch progress has continued with the addition of Balloon Fight (new wide screen), Fire Attack, Octopus, Parachute and Turtle Bridge. You’ll notice some big software list updates this month. The TOSEC Spectrum Plus 3 disk images have been imported, Spectrum Opus support has been added with software from World of Spectrum, and SDX floppy controller support has been added to the Memotech MTX along with a corresponding software list. The PlayStation, PC-98 and Saturn software lists have been updated with testing results and new dumps, original Apple II disk images have been added as they’ve been made available, another batch of Japanese e-kara cartridges has landed, and coverage of Spanish V.Smile releases has been improved. Speaking of software, AmatCoder has fixed a number of issues affecting Amstrad CPC software. The long-neglected Bally Astrocade home system has had tape and lightpen support added in this release. On the arcade side, we’ve added Atari’s TTL-based Rebound, early English releases of Karate Champ, an earlier version of Nihon System’s Omega, and world releases of DJ Boy and Gemini Wing. In changes you probably won’t notice, we’ve switched the toolchain used for building official Windows binary releases from GCC 7 to GCC 8, and a new tools package has been made available. As always, you can get the source and Windows binary packages from the download page.
Fisher-Price Fun 2 Learn Smart Fit Park [Sean Riddle, ClawGrip]
Frantic Fruits [SpinalFeyd, The Dumping Union]
Jurassic Park (bootleg of Megadrive version) [Jorge Silva, Kravex]
Kontron Instruments Micromon 7141 ECG unit [Robbbert, Rockman, ClawGrip]
Lear Siegler ADM 36 Video Display Terminal [Al Kossow, Bitsavers]
Mega Drive 4 / Guitar Idol (set 1) [Alexandre Souza]
Neo Print - Chicken Ramen (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Fuyo Pri Iitoko Tori (Japan) (T4i 3.07) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Otogibanashi (Japan) (T4i 3.00) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Senyou Cassette Ver. 1 (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print Special: Sekai Ryokou 2 (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Sega AS-1 Controller [Arzeno Fabrice. The Dumping Union]
Star Trek: The Next Generation (LX-5) [PinMAME]
Super Chick [Travis Swager]
unknown poker game [chaneman]
New clones marked as NOT_WORKING
LeapPad (Canada) [Sean Riddle, ClawGrip]
Mega Drive 4 / Guitar Idol (set 2) [Alexandre Souza]
My First LeapPad (World, V1.3) [Sean Riddle, ClawGrip]
Over Rev (Model 2B, Revision A) [Dane Biegert, Brian Troha, Henrique Areias Pontes, Sean Sutton, Smitdogg, The Dumping Union]
Sega Rally Championship - Twin/DX (Revision A) [Dane Biegert, Brian Troha, Henrique Areias Pontes, Sean Sutton, Smitdogg, The Dumping Union]
Spider-Man (JAKKS Pacific TV Game) (older hardare) [Sean Riddle, anonymous]
Yamaha MU80 [R. Belmont, O. Galibert]
Yamaha VL70-m [R. Belmont, O. Galibert]
New working software list additions
acrnsys_rom: ADE [Nigel Barnes]
apple2_flop_orig: A.E., Akalabeth, Alien Lander, The Asteroid Field, Beer Run, Bug Attack, Captain Goodnight and the Islands of Fear, Championship Lode Runner, Choplifter, Dazzle Draw (version 1.1), Eggs-It, Ernie's Quiz, Gamma Goblins, Golden Mountain, Gruds in Space, High Orbit, Instant Zoo, Labyrinth, Lancaster, Lunar Leepers, Mix and Match, Muppetville, Phaser Fire, Ribbit, Serpentine, Spotlight, The Super Factory, Ultima III: Exodus, Where in the World is Carmen Sandiego [4am, Firehawke]
ibm5150: Dragon's Lair, Golden Axe (3.5"), Indiana Jones And The Last Crusade - The Action Game (Kixx release), Panza Kick Boxing (Kixx budget release) [ArcadeShadow]
ibm5170: All New World Of Lemmings, Desert Strike: Return to the Gulf, Ultimate Body Blows [ArcadeShadow]
icanpian: Piano Favorites (J7522) [Sean Riddle, anonymous] Disney Princess Magical Melodies (K4656), Jammin' Jungle Safari (Disney's The Lion King, Jungle Book, Tarzan) (K4653), Jungle Boogie (J7524), Nicktoons Show Tunes (J7527), Rockin' Dance Party (J8715), Scooby-Doo! Monster Mayhem (J7525) [Sean Riddle, David Haywood]
mtx_flop: CP/M System Disk (FDX), CP/M System Disk (SDX), dBASE II, FDX NewWord, Modem Executive 1.14, SuperCalc, Tape to Disc Transfer (FDX and CP/M only), Turbo PASCAL 2.00A, Turbo PASCAL 3.00A, WordStar 3.00 [Nigel Barnes]
pc98: Cal Gaiden - Tiny Steps Behind the Cal, Capcom Tokoton Efude, Ce'st la vie, Cherry Jam - Kanojo ga Hadaka ni Kigaetara, Cherry Jam - Kanojo ga Hadaka ni Kigaetara (Alt), Chiemi, Chou Shinri Samâdhi (Alt), Clipper - Takepon no Ochimono Puzzle, Cocktail Soft - Zoukan-gou 2, Concert, Cranston Manor (2HD conversion), CRW - Metal Jacket, Cybernetic Hi-School / Dennou Gakuen [Neo Kobe Collection]
pc98_cd: Cyberwar [Neo Kobe Collection]
snes: Striker (Euro, NTSC Prototype) [FakeShemp]
spectrum_flop_opus: 007 Multispy, Astrum+ v1.0, Astrum+ v1.1, Blast v3.7, Daton Software Card Games, The Derek Brewster Collection, Disc Manager, Grumpy Gumphrey Supersleuth/Monty On The Run, Masterfile v09, Omnicalc 2, QuickDOS, Sales/Purchase Ledger Invoicing, Spectrum Discovery Club Library Disc 01, Spectrum Discovery Club Library Disc 02, Spectrum Discovery Club Library Disc 03, Spectrum Discovery Club Library Disc 04, Spectrum Discovery Club Library Disc 05, Spectrum Discovery Club Library Disc 06, Spectrum Discovery Club Library Disc 07, Spectrum Discovery Club Library Disc 08, Spectrum Discovery Club Library Disc 09, Spectrum Discovery Club Library Disc 10, Spectrum Discovery Club Newsletter 01-03, Spectrum Discovery Club Newsletter 04, Spectrum Discovery Club Newsletter 05, Spectrum Discovery Club Newsletter 06, Spectrum Discovery Club Newsletter 07, Spectrum Discovery Club Newsletter 08, Spectrum Discovery Club Newsletter 09, Spectrum Discovery Club Newsletter 10, Spectrum Discovery Club Newsletter 11, Spectrum Discovery Club Newsletter 12, Spectrum Discovery Club Newsletter 13, Spectrum Discovery Club Newsletter 14, Spectrum Discovery Club Newsletter 15, Spectrum Discovery Club Newsletter 16, Spectrum Discovery Club Newsletter 17, Spectrum Discovery Club Newsletter 18, Spectrum Discovery Club Newsletter 19, Spectrum Discovery Club Newsletter 20, Spectrum Discovery Club Newsletter 21, Spectrum Discovery Club Newsletter 22, Spectrum Discovery Club Newsletter 23, Spectrum Discovery Club Newsletter 24, Spectrum Discovery Club Newsletter 25, Spectrum Discovery Club Newsletter 26, Spectrum Discovery Club Newsletter 27, Spectrum Discovery Club Newsletter 28, Spectrum Discovery Club Newsletter 29, Spectrum Discovery Club Newsletter 30, Spectrum Discovery Club Newsletter 31, Spectrum Discovery Club Newsletter 32, Spectrum Discovery Club Newsletter 33, Spectrum Discovery Club Newsletter 34, Spectrum Discovery Club Newsletter 35, Spectrum Discovery Club Newsletter 36, Spectrum Discovery Club Newsletter 37, Spectrum Discovery Club Newsletter 38, Spectrum Discovery Club Newsletter 39, Spectrum Discovery Club Newsletter 40, Spectrum Discovery Club Newsletter 41, Spectrum Discovery Club Newsletter 42, Spectrum Discovery Club Newsletter Xmas Bonus December 1989, Spectrum Discovery Club Newsletter Xmas Bonus December 1990, Spectrum Discovery Club Newsletter Xmas Bonus December 1991, Spectrum Discovery Club Newsletter Xmas Bonus December 1992, Tascopy, Tasprint, Tasword Three, Trans-Express 85.2, Transdata, UDG Generator, The Writer [World of Spectrum]
vsmile_cart: Aventuras en el Parque Alfabeto (Spa), Barrio Sésamo - El Mundo Fantástico de Epi y Blas (Spa), Conducción Divertida (Spa), Disney Aladdin - El Maravilloso Mundo de Aladdin (Spa), Disney El Rey León - La Gran Aventura de Simba (Spa), Disney La Casa de Mickey Mouse (Spa), Disney La Sirenita - El Viaje Fantástico de Ariel (Spa), Disney Mickey - La Aventura Mágica de Mickey (Spa), Disney Winnie the Pooh - En Busca de la Miel (Spa), Disney Winnie the Pooh - En Busca de la Miel (Spa, Rev. 122), Disney/Pixar Buscando a Nemo - Los Descubrimientos de Nemo (Spa), Disney/Pixar Ratatouille - Las recetas del Remy (Spa), Disney/Pixar Toy Story 2 - El Rescate De Woody (Spa), Disney/Pixar Wall-E (Spa), DreamWorks Monstruos contra Alienígenas (Spa), Mundo Elmo - Grandes descubrimientos de Elmo (Spa), Nick Jr. Dora La Exploradora - La Aventura arregla-todo de Dora (Spa, Rev. 222), Nickelodeon Bob Esponja - Un día en la vida de una esponja (Spa), Osos Amorosos - Una Lección de Amor (Spa), Spider-Man y Amigos - La Aventura Del Doctor Octopus (Spa), Spider-Man y Amigos - Misiones Secretas (Spa), Walt Disney La Cenicienta - Los sueños mágicos de Cenicienta (Spa, Rev. 222), Zayzoo - Mi Amiga del Espacio (Spa) [TeamEurope, ClawGrip]
Software list items promoted to working
pc98: C.G. Gallery Master_98, CG Tsukuuru 3D, CRW 2, Cal III - Kanketsuhen, Cal Piss Water - Ayashii CG Shuu, Can Can Bunny 2 - Superior, Can Can Bunny 4 - Premiere, Can Can Bunny 5 - Extra, Can Can Bunny 5½ - Limited, Canaan - Yakusoku no Chi, Challenge the Touch-Type 2, Charade, Charade Magic, Check Six (Demo), Cherry Moderate, Cherry Moderate (Demo), Chuushaki - Hirasawa Nurse School, Clone Doll - Kagai Juugyou, Coin, Coming Heart, Computer Aided Economics, Computer Music Vol. 20, CrEastar - Planets in Legend, Custom Mate 2, Custom Mate 3, Cyber Illusion, Level II COBOL V2.1, SoftBank C Magazine 1991-11, SoftBank C Magazine 1992-01, SoftBank C Magazine 1992-02, SoftBank C Magazine 1992-03, SoftBank C Magazine 1992-04, SoftBank C Magazine 1992-05, SoftBank C Magazine 1992-06, SoftBank C Magazine 1992-07, SoftBank C Magazine 1992-09, SoftBank C Magazine 1992-10, SoftBank C Magazine 1992-11, SoftBank C Magazine 1992-12, SoftBank C Magazine 1993-01, SoftBank C Magazine 1994-04, SoftBank C Magazine 1994-05, SoftBank C Magazine 1994-06 [Carl, r09]
psx: 1-on-1 - Single Basketball (Jpn), 19-ji 03-pun Ueno Hatsu Yakou Ressha (Jpn), Advan Racing (Jpn), Captain Commando (Jpn), First Kiss Monogatari (Jpn), Ikuzawa Touru Kanshuu - Meisha Retsuden - Greatest 70's (Jpn), Running High (Jpn), S.Q. - Sound Qube (Jpn), Simple 1500 Series Vol.104 - The Pink Panther - Pinkadelic Pursuit (Jpn), Simple 1500 Series vol.88 - The Gal Mahjong - Love Songs - Idol wa High Rate (Jpn), Simple 1500 Series vol.90 - The Sensha (Jpn), Simple 1500 Series vol.97 - The Squash (Jpn), Space Invaders X (Jpn), Squaresoft Memory Card Data CD (Jpn), Super Live Stadium (Jpn), TFX - Tactical Fighter Experiment (Jpn), Ungra Walker (Jpn), Victory Spike (Jpn), Zig Zag Ball (Jpn), Zipangujima - Unmei wa Saikoro ga Kimeru! (Jpn) [Angelo Salese]
saturn: AI Shougi (Jpn), Cat the Ripper - 13-ninme no Tanteishi (Jpn), Dezaemon 2 (Jpn) [Angelo Salese]
icanguit: American Idol - Guitar Greats (K9907), Hot Wheels - Road Tunes (K9902), Nashville Hits (K9905), SpongeBob SquarePants - Surf's Up (K9903) [Sean Riddle, David Haywood]
leapfrog_leappad_cart:
5th Grade Math (UK), ABC-Abenteuer (Germany), Englisch Kurs - Let's go 3 (Germany), Englisch Kurs - Let's go 4 (Germany), FUN-damentals Series - 4th Grade Math (UK), FUN-damentals Series - Smart Guide to 3rd Grade (UK), FUN-damentals Series - Smart Guide to 5th Grade (UK), Hop on Pop - Based on the Book by Dr. Seuss (UK), Leap 2 - Math - The Great Dune Buggy Race (UK), Leap and the lost Dinosaur (UK), LeapFrog Schoolhouse - Level 3 - Helping Others (UK), LeapPad Interactive Book (UK), Music - Hit it, Maestro! (UK), Phonics Program - Lesson 10 - Compound Words - A Fisherman's Tale (UK), Pre Reading - Leap's Friends From A to Z (UK), Reading - Disney/Pixar Finding Nemo (UK), Sed de Saber - English as a Second Language Edition - Book 1 - Getting Started (Spain), Sed de Saber - English as a Second Language Edition - Book 2 - A New Job (Spain), Sed de Saber - English as a Second Language Edition - Book 3 - Daily Activities (Spain), Sed de Saber - English as a Second Language Edition - Book 4 - Health and Safety (Spain), Sed de Saber - English as a Second Language Edition - Book 5 - Community Interactions (Spain), Sed de Saber - English as a Second Language Edition - Book 6 - How do you say... (Spain), What will you be? (UK) [TeamEurope]
Disney Princesas - Cuentos de las Princesas (Spain), Fiesta in the House! - ¡Party en la Casa! (Spain), LeapPad - Libro Interactivo (Spain), El Rey León (Spain), ¡Yo aprendo inglés! - Mis Primeras 500 Palabras en Inglés (Spain) [TeamEurope, ClawGrip]
leapfrog_mfleappad_cart: Disney Princesas - Las Princesas Disney (Spa), El gran día de Croki (Spa), Mi Primer Día de Escuela (Spa) [TeamEurope, ClawGrip]
vsmile_cart: Scooby-Doo - Misterio en el Parque (Spa) [TeamEurope, ClawGrip]
vsmile_cd:
The Amazing Spider-Man - Countdown to Doom (USA, Rev. 2), Disney/Pixar Cars - In the Fast Lane (USA, Rev. 1), Disney/Pixar Cars - In the Fast Lane (USA, Rev. 3), Nick SpongeBob Schwammkopf: Ein Schwamm voller Ideen (Ger), Nickelodeon SpongeBob Squarepants - Idea Sponge (USA, Rev. 1), Nickelodeon SpongeBob Squarepants - Idea Sponge (USA, Rev. 2), Shrek the Third - The Search for Arthur (UK), Wacky Race on Jumpin' Bean Island (UK), Wacky Race on Jumpin' Bean Island (USA, Rev. 2) [redump.org, ClawGrip]
Bratz - El Misterio del Collar (Spa), Carrera Loca en la Isla de las Vainas Fritas (Spa), Cars - El Carril Rápido (Spa), Disney Princess - El Castillo de las Princesas (Spa), Nickelodeon Bob Esponja - Misión Esponja (Spa), Scooby-Doo: Viaje al Pasado (Spa), Shrek Tercero - ¿Dónde Está Arturo? (Spa) [Diego Bartolomé, redump.org, ClawGrip]
vsmileb_cart: Un Día en la Granja (Spa) [TeamEurope, ClawGrip]
Source Changes
dec0.cpp: Converted to use µPD4701A device for trackball input. [AJR]
tms9900, tms9980a, tms9995: Made CRU read addressing consistent with write addressing. [AJR]
Added skeleton CPU device and disassembler for National Semiconductor High Performance microController (HPC) architecture. [AJR]
i186: Added interrupt controller registers to debugger state [AJR]
Exclude scheduled devices that don’t expose a base program counter from numerical indexing for debugger commands. [AJR]
Add AHA-1542A, AHA-1542B, and BIOS v1.02 of AHA-1542C ROMs from Adaptec. [AJR]
cdc721: Reduced character height to make all rows fit. [AJR]
freekick.cpp: Documented connector pinouts. [AJR]
mcs51: Updated old hack to break out of JB INT0/INT1 loops when interrupt is triggered. [AJR]
tmp68301: Merged on-chip peripheral emulation with CPU device. [AJR]
Added skeleton Adaptec AHA-1740 and AHA-1742A ISA devices. [AJR]
Added ROMs for BusLogic BT-542B ISA SCSI controller. [AJR]
odyssey2.cpp: Fixed videopac machine. [AmatCoder]
mc6845.cpp updates: [AmatCoder]
Don’t reset line counter when screen parameters are changed.
Check vertical sync condition when frame is reset if vertical sync width is supported.
upd765.cpp: Made Read ID return command if execution phase is reached but ID is not found. [AmatCoder]
dsk_dsk.cpp: Report error if image has more heads and/or tracks than the drive supports. [AmatCoder]
spectrum.cpp: Fixed bit 6 value returned from port 0xFE (fixes MT06439). [AmatCoder]
Today we’re proud to bring you MAME 0.208. There are some big improvements to SunPlus SPG240/SPG280 audio emulation. Not only does this greatly improve the enjoyability of the JAKKS Pacific TV games, it’s also timed perfectly for the addition of the Fisher-Price I Can Play Piano music teaching system. That’s not the only newly supported music system this month: we’ve added Jumping Popira, and Popira 2 has been promoted to working. Continuing with the audio theme, moralrecordings fixed BSMT 2000 4-bit ADPCM sample playback, cam900 added support for the VRC7 as a separate device with its unique instrument patches, and schnitzeltony improved Atari POKEY performance substantially. Newly supported TV games include Disney, Disney and Friends, Justice League and SpongeBob SquarePants – The Fry Cook Games from JAKKS Pacific, and XaviX titles Geigeki Go Go Shooting, Gururin World and MX Dirt Rebel. You’ll be able to enjoy the XaviX-based games even more now with improvements to the colour palette. The Nintendo Game & Watch progress has continued with the addition of Balloon Fight (new wide screen), Fire Attack, Octopus, Parachute and Turtle Bridge. You’ll notice some big software list updates this month. The TOSEC Spectrum Plus 3 disk images have been imported, Spectrum Opus support has been added with software from World of Spectrum, and SDX floppy controller support has been added to the Memotech MTX along with a corresponding software list. The PlayStation, PC-98 and Saturn software lists have been updated with testing results and new dumps, original Apple II disk images have been added as they’ve been made available, another batch of Japanese e-kara cartridges has landed, and coverage of Spanish V.Smile releases has been improved. Speaking of software, AmatCoder has fixed a number of issues affecting Amstrad CPC software. The long-neglected Bally Astrocade home system has had tape and lightpen support added in this release. On the arcade side, we’ve added Atari’s TTL-based Rebound, early English releases of Karate Champ, an earlier version of Nihon System’s Omega, and world releases of DJ Boy and Gemini Wing. In changes you probably won’t notice, we’ve switched the toolchain used for building official Windows binary releases from GCC 7 to GCC 8, and a new tools package has been made available. As always, you can get the source and Windows binary packages from the download page.
Fisher-Price Fun 2 Learn Smart Fit Park [Sean Riddle, ClawGrip]
Frantic Fruits [SpinalFeyd, The Dumping Union]
Jurassic Park (bootleg of Megadrive version) [Jorge Silva, Kravex]
Kontron Instruments Micromon 7141 ECG unit [Robbbert, Rockman, ClawGrip]
Lear Siegler ADM 36 Video Display Terminal [Al Kossow, Bitsavers]
Mega Drive 4 / Guitar Idol (set 1) [Alexandre Souza]
Neo Print - Chicken Ramen (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Fuyo Pri Iitoko Tori (Japan) (T4i 3.07) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Otogibanashi (Japan) (T4i 3.00) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Senyou Cassette Ver. 1 (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print Special: Sekai Ryokou 2 (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Sega AS-1 Controller [Arzeno Fabrice. The Dumping Union]
Star Trek: The Next Generation (LX-5) [PinMAME]
Super Chick [Travis Swager]
unknown poker game [chaneman]
New clones marked as NOT_WORKING
LeapPad (Canada) [Sean Riddle, ClawGrip]
Mega Drive 4 / Guitar Idol (set 2) [Alexandre Souza]
My First LeapPad (World, V1.3) [Sean Riddle, ClawGrip]
Over Rev (Model 2B, Revision A) [Dane Biegert, Brian Troha, Henrique Areias Pontes, Sean Sutton, Smitdogg, The Dumping Union]
Sega Rally Championship - Twin/DX (Revision A) [Dane Biegert, Brian Troha, Henrique Areias Pontes, Sean Sutton, Smitdogg, The Dumping Union]
Spider-Man (JAKKS Pacific TV Game) (older hardare) [Sean Riddle, anonymous]
Yamaha MU80 [R. Belmont, O. Galibert]
Yamaha VL70-m [R. Belmont, O. Galibert]
New working software list additions
acrnsys_rom: ADE [Nigel Barnes]
apple2_flop_orig: A.E., Akalabeth, Alien Lander, The Asteroid Field, Beer Run, Bug Attack, Captain Goodnight and the Islands of Fear, Championship Lode Runner, Choplifter, Dazzle Draw (version 1.1), Eggs-It, Ernie's Quiz, Gamma Goblins, Golden Mountain, Gruds in Space, High Orbit, Instant Zoo, Labyrinth, Lancaster, Lunar Leepers, Mix and Match, Muppetville, Phaser Fire, Ribbit, Serpentine, Spotlight, The Super Factory, Ultima III: Exodus, Where in the World is Carmen Sandiego [4am, Firehawke]
ibm5150: Dragon's Lair, Golden Axe (3.5"), Indiana Jones And The Last Crusade - The Action Game (Kixx release), Panza Kick Boxing (Kixx budget release) [ArcadeShadow]
ibm5170: All New World Of Lemmings, Desert Strike: Return to the Gulf, Ultimate Body Blows [ArcadeShadow]
icanpian: Piano Favorites (J7522) [Sean Riddle, anonymous] Disney Princess Magical Melodies (K4656), Jammin' Jungle Safari (Disney's The Lion King, Jungle Book, Tarzan) (K4653), Jungle Boogie (J7524), Nicktoons Show Tunes (J7527), Rockin' Dance Party (J8715), Scooby-Doo! Monster Mayhem (J7525) [Sean Riddle, David Haywood]
mtx_flop: CP/M System Disk (FDX), CP/M System Disk (SDX), dBASE II, FDX NewWord, Modem Executive 1.14, SuperCalc, Tape to Disc Transfer (FDX and CP/M only), Turbo PASCAL 2.00A, Turbo PASCAL 3.00A, WordStar 3.00 [Nigel Barnes]
pc98: Cal Gaiden - Tiny Steps Behind the Cal, Capcom Tokoton Efude, Ce'st la vie, Cherry Jam - Kanojo ga Hadaka ni Kigaetara, Cherry Jam - Kanojo ga Hadaka ni Kigaetara (Alt), Chiemi, Chou Shinri Samâdhi (Alt), Clipper - Takepon no Ochimono Puzzle, Cocktail Soft - Zoukan-gou 2, Concert, Cranston Manor (2HD conversion), CRW - Metal Jacket, Cybernetic Hi-School / Dennou Gakuen [Neo Kobe Collection]
pc98_cd: Cyberwar [Neo Kobe Collection]
snes: Striker (Euro, NTSC Prototype) [FakeShemp]
spectrum_flop_opus: 007 Multispy, Astrum+ v1.0, Astrum+ v1.1, Blast v3.7, Daton Software Card Games, The Derek Brewster Collection, Disc Manager, Grumpy Gumphrey Supersleuth/Monty On The Run, Masterfile v09, Omnicalc 2, QuickDOS, Sales/Purchase Ledger Invoicing, Spectrum Discovery Club Library Disc 01, Spectrum Discovery Club Library Disc 02, Spectrum Discovery Club Library Disc 03, Spectrum Discovery Club Library Disc 04, Spectrum Discovery Club Library Disc 05, Spectrum Discovery Club Library Disc 06, Spectrum Discovery Club Library Disc 07, Spectrum Discovery Club Library Disc 08, Spectrum Discovery Club Library Disc 09, Spectrum Discovery Club Library Disc 10, Spectrum Discovery Club Newsletter 01-03, Spectrum Discovery Club Newsletter 04, Spectrum Discovery Club Newsletter 05, Spectrum Discovery Club Newsletter 06, Spectrum Discovery Club Newsletter 07, Spectrum Discovery Club Newsletter 08, Spectrum Discovery Club Newsletter 09, Spectrum Discovery Club Newsletter 10, Spectrum Discovery Club Newsletter 11, Spectrum Discovery Club Newsletter 12, Spectrum Discovery Club Newsletter 13, Spectrum Discovery Club Newsletter 14, Spectrum Discovery Club Newsletter 15, Spectrum Discovery Club Newsletter 16, Spectrum Discovery Club Newsletter 17, Spectrum Discovery Club Newsletter 18, Spectrum Discovery Club Newsletter 19, Spectrum Discovery Club Newsletter 20, Spectrum Discovery Club Newsletter 21, Spectrum Discovery Club Newsletter 22, Spectrum Discovery Club Newsletter 23, Spectrum Discovery Club Newsletter 24, Spectrum Discovery Club Newsletter 25, Spectrum Discovery Club Newsletter 26, Spectrum Discovery Club Newsletter 27, Spectrum Discovery Club Newsletter 28, Spectrum Discovery Club Newsletter 29, Spectrum Discovery Club Newsletter 30, Spectrum Discovery Club Newsletter 31, Spectrum Discovery Club Newsletter 32, Spectrum Discovery Club Newsletter 33, Spectrum Discovery Club Newsletter 34, Spectrum Discovery Club Newsletter 35, Spectrum Discovery Club Newsletter 36, Spectrum Discovery Club Newsletter 37, Spectrum Discovery Club Newsletter 38, Spectrum Discovery Club Newsletter 39, Spectrum Discovery Club Newsletter 40, Spectrum Discovery Club Newsletter 41, Spectrum Discovery Club Newsletter 42, Spectrum Discovery Club Newsletter Xmas Bonus December 1989, Spectrum Discovery Club Newsletter Xmas Bonus December 1990, Spectrum Discovery Club Newsletter Xmas Bonus December 1991, Spectrum Discovery Club Newsletter Xmas Bonus December 1992, Tascopy, Tasprint, Tasword Three, Trans-Express 85.2, Transdata, UDG Generator, The Writer [World of Spectrum]
vsmile_cart: Aventuras en el Parque Alfabeto (Spa), Barrio Sésamo - El Mundo Fantástico de Epi y Blas (Spa), Conducción Divertida (Spa), Disney Aladdin - El Maravilloso Mundo de Aladdin (Spa), Disney El Rey León - La Gran Aventura de Simba (Spa), Disney La Casa de Mickey Mouse (Spa), Disney La Sirenita - El Viaje Fantástico de Ariel (Spa), Disney Mickey - La Aventura Mágica de Mickey (Spa), Disney Winnie the Pooh - En Busca de la Miel (Spa), Disney Winnie the Pooh - En Busca de la Miel (Spa, Rev. 122), Disney/Pixar Buscando a Nemo - Los Descubrimientos de Nemo (Spa), Disney/Pixar Ratatouille - Las recetas del Remy (Spa), Disney/Pixar Toy Story 2 - El Rescate De Woody (Spa), Disney/Pixar Wall-E (Spa), DreamWorks Monstruos contra Alienígenas (Spa), Mundo Elmo - Grandes descubrimientos de Elmo (Spa), Nick Jr. Dora La Exploradora - La Aventura arregla-todo de Dora (Spa, Rev. 222), Nickelodeon Bob Esponja - Un día en la vida de una esponja (Spa), Osos Amorosos - Una Lección de Amor (Spa), Spider-Man y Amigos - La Aventura Del Doctor Octopus (Spa), Spider-Man y Amigos - Misiones Secretas (Spa), Walt Disney La Cenicienta - Los sueños mágicos de Cenicienta (Spa, Rev. 222), Zayzoo - Mi Amiga del Espacio (Spa) [TeamEurope, ClawGrip]
Software list items promoted to working
pc98: C.G. Gallery Master_98, CG Tsukuuru 3D, CRW 2, Cal III - Kanketsuhen, Cal Piss Water - Ayashii CG Shuu, Can Can Bunny 2 - Superior, Can Can Bunny 4 - Premiere, Can Can Bunny 5 - Extra, Can Can Bunny 5½ - Limited, Canaan - Yakusoku no Chi, Challenge the Touch-Type 2, Charade, Charade Magic, Check Six (Demo), Cherry Moderate, Cherry Moderate (Demo), Chuushaki - Hirasawa Nurse School, Clone Doll - Kagai Juugyou, Coin, Coming Heart, Computer Aided Economics, Computer Music Vol. 20, CrEastar - Planets in Legend, Custom Mate 2, Custom Mate 3, Cyber Illusion, Level II COBOL V2.1, SoftBank C Magazine 1991-11, SoftBank C Magazine 1992-01, SoftBank C Magazine 1992-02, SoftBank C Magazine 1992-03, SoftBank C Magazine 1992-04, SoftBank C Magazine 1992-05, SoftBank C Magazine 1992-06, SoftBank C Magazine 1992-07, SoftBank C Magazine 1992-09, SoftBank C Magazine 1992-10, SoftBank C Magazine 1992-11, SoftBank C Magazine 1992-12, SoftBank C Magazine 1993-01, SoftBank C Magazine 1994-04, SoftBank C Magazine 1994-05, SoftBank C Magazine 1994-06 [Carl, r09]
psx: 1-on-1 - Single Basketball (Jpn), 19-ji 03-pun Ueno Hatsu Yakou Ressha (Jpn), Advan Racing (Jpn), Captain Commando (Jpn), First Kiss Monogatari (Jpn), Ikuzawa Touru Kanshuu - Meisha Retsuden - Greatest 70's (Jpn), Running High (Jpn), S.Q. - Sound Qube (Jpn), Simple 1500 Series Vol.104 - The Pink Panther - Pinkadelic Pursuit (Jpn), Simple 1500 Series vol.88 - The Gal Mahjong - Love Songs - Idol wa High Rate (Jpn), Simple 1500 Series vol.90 - The Sensha (Jpn), Simple 1500 Series vol.97 - The Squash (Jpn), Space Invaders X (Jpn), Squaresoft Memory Card Data CD (Jpn), Super Live Stadium (Jpn), TFX - Tactical Fighter Experiment (Jpn), Ungra Walker (Jpn), Victory Spike (Jpn), Zig Zag Ball (Jpn), Zipangujima - Unmei wa Saikoro ga Kimeru! (Jpn) [Angelo Salese]
saturn: AI Shougi (Jpn), Cat the Ripper - 13-ninme no Tanteishi (Jpn), Dezaemon 2 (Jpn) [Angelo Salese]
icanguit: American Idol - Guitar Greats (K9907), Hot Wheels - Road Tunes (K9902), Nashville Hits (K9905), SpongeBob SquarePants - Surf's Up (K9903) [Sean Riddle, David Haywood]
leapfrog_leappad_cart:
5th Grade Math (UK), ABC-Abenteuer (Germany), Englisch Kurs - Let's go 3 (Germany), Englisch Kurs - Let's go 4 (Germany), FUN-damentals Series - 4th Grade Math (UK), FUN-damentals Series - Smart Guide to 3rd Grade (UK), FUN-damentals Series - Smart Guide to 5th Grade (UK), Hop on Pop - Based on the Book by Dr. Seuss (UK), Leap 2 - Math - The Great Dune Buggy Race (UK), Leap and the lost Dinosaur (UK), LeapFrog Schoolhouse - Level 3 - Helping Others (UK), LeapPad Interactive Book (UK), Music - Hit it, Maestro! (UK), Phonics Program - Lesson 10 - Compound Words - A Fisherman's Tale (UK), Pre Reading - Leap's Friends From A to Z (UK), Reading - Disney/Pixar Finding Nemo (UK), Sed de Saber - English as a Second Language Edition - Book 1 - Getting Started (Spain), Sed de Saber - English as a Second Language Edition - Book 2 - A New Job (Spain), Sed de Saber - English as a Second Language Edition - Book 3 - Daily Activities (Spain), Sed de Saber - English as a Second Language Edition - Book 4 - Health and Safety (Spain), Sed de Saber - English as a Second Language Edition - Book 5 - Community Interactions (Spain), Sed de Saber - English as a Second Language Edition - Book 6 - How do you say... (Spain), What will you be? (UK) [TeamEurope]
Disney Princesas - Cuentos de las Princesas (Spain), Fiesta in the House! - ¡Party en la Casa! (Spain), LeapPad - Libro Interactivo (Spain), El Rey León (Spain), ¡Yo aprendo inglés! - Mis Primeras 500 Palabras en Inglés (Spain) [TeamEurope, ClawGrip]
leapfrog_mfleappad_cart: Disney Princesas - Las Princesas Disney (Spa), El gran día de Croki (Spa), Mi Primer Día de Escuela (Spa) [TeamEurope, ClawGrip]
vsmile_cart: Scooby-Doo - Misterio en el Parque (Spa) [TeamEurope, ClawGrip]
vsmile_cd:
The Amazing Spider-Man - Countdown to Doom (USA, Rev. 2), Disney/Pixar Cars - In the Fast Lane (USA, Rev. 1), Disney/Pixar Cars - In the Fast Lane (USA, Rev. 3), Nick SpongeBob Schwammkopf: Ein Schwamm voller Ideen (Ger), Nickelodeon SpongeBob Squarepants - Idea Sponge (USA, Rev. 1), Nickelodeon SpongeBob Squarepants - Idea Sponge (USA, Rev. 2), Shrek the Third - The Search for Arthur (UK), Wacky Race on Jumpin' Bean Island (UK), Wacky Race on Jumpin' Bean Island (USA, Rev. 2) [redump.org, ClawGrip]
Bratz - El Misterio del Collar (Spa), Carrera Loca en la Isla de las Vainas Fritas (Spa), Cars - El Carril Rápido (Spa), Disney Princess - El Castillo de las Princesas (Spa), Nickelodeon Bob Esponja - Misión Esponja (Spa), Scooby-Doo: Viaje al Pasado (Spa), Shrek Tercero - ¿Dónde Está Arturo? (Spa) [Diego Bartolomé, redump.org, ClawGrip]
vsmileb_cart: Un Día en la Granja (Spa) [TeamEurope, ClawGrip]
Source Changes
dec0.cpp: Converted to use µPD4701A device for trackball input. [AJR]
tms9900, tms9980a, tms9995: Made CRU read addressing consistent with write addressing. [AJR]
Added skeleton CPU device and disassembler for National Semiconductor High Performance microController (HPC) architecture. [AJR]
i186: Added interrupt controller registers to debugger state [AJR]
Exclude scheduled devices that don’t expose a base program counter from numerical indexing for debugger commands. [AJR]
Add AHA-1542A, AHA-1542B, and BIOS v1.02 of AHA-1542C ROMs from Adaptec. [AJR]
cdc721: Reduced character height to make all rows fit. [AJR]
freekick.cpp: Documented connector pinouts. [AJR]
mcs51: Updated old hack to break out of JB INT0/INT1 loops when interrupt is triggered. [AJR]
tmp68301: Merged on-chip peripheral emulation with CPU device. [AJR]
Added skeleton Adaptec AHA-1740 and AHA-1742A ISA devices. [AJR]
Added ROMs for BusLogic BT-542B ISA SCSI controller. [AJR]
odyssey2.cpp: Fixed videopac machine. [AmatCoder]
mc6845.cpp updates: [AmatCoder]
Don’t reset line counter when screen parameters are changed.
Check vertical sync condition when frame is reset if vertical sync width is supported.
upd765.cpp: Made Read ID return command if execution phase is reached but ID is not found. [AmatCoder]
dsk_dsk.cpp: Report error if image has more heads and/or tracks than the drive supports. [AmatCoder]
spectrum.cpp: Fixed bit 6 value returned from port 0xFE (fixes MT06439). [AmatCoder]
Today we’re proud to bring you MAME 0.208. There are some big improvements to SunPlus SPG240/SPG280 audio emulation. Not only does this greatly improve the enjoyability of the JAKKS Pacific TV games, it’s also timed perfectly for the addition of the Fisher-Price I Can Play Piano music teaching system. That’s not the only newly supported music system this month: we’ve added Jumping Popira, and Popira 2 has been promoted to working. Continuing with the audio theme, moralrecordings fixed BSMT 2000 4-bit ADPCM sample playback, cam900 added support for the VRC7 as a separate device with its unique instrument patches, and schnitzeltony improved Atari POKEY performance substantially. Newly supported TV games include Disney, Disney and Friends, Justice League and SpongeBob SquarePants – The Fry Cook Games from JAKKS Pacific, and XaviX titles Geigeki Go Go Shooting, Gururin World and MX Dirt Rebel. You’ll be able to enjoy the XaviX-based games even more now with improvements to the colour palette. The Nintendo Game & Watch progress has continued with the addition of Balloon Fight (new wide screen), Fire Attack, Octopus, Parachute and Turtle Bridge. You’ll notice some big software list updates this month. The TOSEC Spectrum Plus 3 disk images have been imported, Spectrum Opus support has been added with software from World of Spectrum, and SDX floppy controller support has been added to the Memotech MTX along with a corresponding software list. The PlayStation, PC-98 and Saturn software lists have been updated with testing results and new dumps, original Apple II disk images have been added as they’ve been made available, another batch of Japanese e-kara cartridges has landed, and coverage of Spanish V.Smile releases has been improved. Speaking of software, AmatCoder has fixed a number of issues affecting Amstrad CPC software. The long-neglected Bally Astrocade home system has had tape and lightpen support added in this release. On the arcade side, we’ve added Atari’s TTL-based Rebound, early English releases of Karate Champ, an earlier version of Nihon System’s Omega, and world releases of DJ Boy and Gemini Wing. In changes you probably won’t notice, we’ve switched the toolchain used for building official Windows binary releases from GCC 7 to GCC 8, and a new tools package has been made available. As always, you can get the source and Windows binary packages from the download page.
Fisher-Price Fun 2 Learn Smart Fit Park [Sean Riddle, ClawGrip]
Frantic Fruits [SpinalFeyd, The Dumping Union]
Jurassic Park (bootleg of Megadrive version) [Jorge Silva, Kravex]
Kontron Instruments Micromon 7141 ECG unit [Robbbert, Rockman, ClawGrip]
Lear Siegler ADM 36 Video Display Terminal [Al Kossow, Bitsavers]
Mega Drive 4 / Guitar Idol (set 1) [Alexandre Souza]
Neo Print - Chicken Ramen (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Fuyo Pri Iitoko Tori (Japan) (T4i 3.07) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Otogibanashi (Japan) (T4i 3.00) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print - Senyou Cassette Ver. 1 (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Neo Print Special: Sekai Ryokou 2 (Japan) [malcor, hammy, Anonymous, Dane Biegert, Sean Sutton, Renato Mucciarelli, Moffitt, Smitdogg, The Dumping Union]
Sega AS-1 Controller [Arzeno Fabrice. The Dumping Union]
Star Trek: The Next Generation (LX-5) [PinMAME]
Super Chick [Travis Swager]
unknown poker game [chaneman]
New clones marked as NOT_WORKING
LeapPad (Canada) [Sean Riddle, ClawGrip]
Mega Drive 4 / Guitar Idol (set 2) [Alexandre Souza]
My First LeapPad (World, V1.3) [Sean Riddle, ClawGrip]
Over Rev (Model 2B, Revision A) [Dane Biegert, Brian Troha, Henrique Areias Pontes, Sean Sutton, Smitdogg, The Dumping Union]
Sega Rally Championship - Twin/DX (Revision A) [Dane Biegert, Brian Troha, Henrique Areias Pontes, Sean Sutton, Smitdogg, The Dumping Union]
Spider-Man (JAKKS Pacific TV Game) (older hardare) [Sean Riddle, anonymous]
Yamaha MU80 [R. Belmont, O. Galibert]
Yamaha VL70-m [R. Belmont, O. Galibert]
New working software list additions
acrnsys_rom: ADE [Nigel Barnes]
apple2_flop_orig: A.E., Akalabeth, Alien Lander, The Asteroid Field, Beer Run, Bug Attack, Captain Goodnight and the Islands of Fear, Championship Lode Runner, Choplifter, Dazzle Draw (version 1.1), Eggs-It, Ernie's Quiz, Gamma Goblins, Golden Mountain, Gruds in Space, High Orbit, Instant Zoo, Labyrinth, Lancaster, Lunar Leepers, Mix and Match, Muppetville, Phaser Fire, Ribbit, Serpentine, Spotlight, The Super Factory, Ultima III: Exodus, Where in the World is Carmen Sandiego [4am, Firehawke]
ibm5150: Dragon's Lair, Golden Axe (3.5"), Indiana Jones And The Last Crusade - The Action Game (Kixx release), Panza Kick Boxing (Kixx budget release) [ArcadeShadow]
ibm5170: All New World Of Lemmings, Desert Strike: Return to the Gulf, Ultimate Body Blows [ArcadeShadow]
icanpian: Piano Favorites (J7522) [Sean Riddle, anonymous] Disney Princess Magical Melodies (K4656), Jammin' Jungle Safari (Disney's The Lion King, Jungle Book, Tarzan) (K4653), Jungle Boogie (J7524), Nicktoons Show Tunes (J7527), Rockin' Dance Party (J8715), Scooby-Doo! Monster Mayhem (J7525) [Sean Riddle, David Haywood]
mtx_flop: CP/M System Disk (FDX), CP/M System Disk (SDX), dBASE II, FDX NewWord, Modem Executive 1.14, SuperCalc, Tape to Disc Transfer (FDX and CP/M only), Turbo PASCAL 2.00A, Turbo PASCAL 3.00A, WordStar 3.00 [Nigel Barnes]
pc98: Cal Gaiden - Tiny Steps Behind the Cal, Capcom Tokoton Efude, Ce'st la vie, Cherry Jam - Kanojo ga Hadaka ni Kigaetara, Cherry Jam - Kanojo ga Hadaka ni Kigaetara (Alt), Chiemi, Chou Shinri Samâdhi (Alt), Clipper - Takepon no Ochimono Puzzle, Cocktail Soft - Zoukan-gou 2, Concert, Cranston Manor (2HD conversion), CRW - Metal Jacket, Cybernetic Hi-School / Dennou Gakuen [Neo Kobe Collection]
pc98_cd: Cyberwar [Neo Kobe Collection]
snes: Striker (Euro, NTSC Prototype) [FakeShemp]
spectrum_flop_opus: 007 Multispy, Astrum+ v1.0, Astrum+ v1.1, Blast v3.7, Daton Software Card Games, The Derek Brewster Collection, Disc Manager, Grumpy Gumphrey Supersleuth/Monty On The Run, Masterfile v09, Omnicalc 2, QuickDOS, Sales/Purchase Ledger Invoicing, Spectrum Discovery Club Library Disc 01, Spectrum Discovery Club Library Disc 02, Spectrum Discovery Club Library Disc 03, Spectrum Discovery Club Library Disc 04, Spectrum Discovery Club Library Disc 05, Spectrum Discovery Club Library Disc 06, Spectrum Discovery Club Library Disc 07, Spectrum Discovery Club Library Disc 08, Spectrum Discovery Club Library Disc 09, Spectrum Discovery Club Library Disc 10, Spectrum Discovery Club Newsletter 01-03, Spectrum Discovery Club Newsletter 04, Spectrum Discovery Club Newsletter 05, Spectrum Discovery Club Newsletter 06, Spectrum Discovery Club Newsletter 07, Spectrum Discovery Club Newsletter 08, Spectrum Discovery Club Newsletter 09, Spectrum Discovery Club Newsletter 10, Spectrum Discovery Club Newsletter 11, Spectrum Discovery Club Newsletter 12, Spectrum Discovery Club Newsletter 13, Spectrum Discovery Club Newsletter 14, Spectrum Discovery Club Newsletter 15, Spectrum Discovery Club Newsletter 16, Spectrum Discovery Club Newsletter 17, Spectrum Discovery Club Newsletter 18, Spectrum Discovery Club Newsletter 19, Spectrum Discovery Club Newsletter 20, Spectrum Discovery Club Newsletter 21, Spectrum Discovery Club Newsletter 22, Spectrum Discovery Club Newsletter 23, Spectrum Discovery Club Newsletter 24, Spectrum Discovery Club Newsletter 25, Spectrum Discovery Club Newsletter 26, Spectrum Discovery Club Newsletter 27, Spectrum Discovery Club Newsletter 28, Spectrum Discovery Club Newsletter 29, Spectrum Discovery Club Newsletter 30, Spectrum Discovery Club Newsletter 31, Spectrum Discovery Club Newsletter 32, Spectrum Discovery Club Newsletter 33, Spectrum Discovery Club Newsletter 34, Spectrum Discovery Club Newsletter 35, Spectrum Discovery Club Newsletter 36, Spectrum Discovery Club Newsletter 37, Spectrum Discovery Club Newsletter 38, Spectrum Discovery Club Newsletter 39, Spectrum Discovery Club Newsletter 40, Spectrum Discovery Club Newsletter 41, Spectrum Discovery Club Newsletter 42, Spectrum Discovery Club Newsletter Xmas Bonus December 1989, Spectrum Discovery Club Newsletter Xmas Bonus December 1990, Spectrum Discovery Club Newsletter Xmas Bonus December 1991, Spectrum Discovery Club Newsletter Xmas Bonus December 1992, Tascopy, Tasprint, Tasword Three, Trans-Express 85.2, Transdata, UDG Generator, The Writer [World of Spectrum]
vsmile_cart: Aventuras en el Parque Alfabeto (Spa), Barrio Sésamo - El Mundo Fantástico de Epi y Blas (Spa), Conducción Divertida (Spa), Disney Aladdin - El Maravilloso Mundo de Aladdin (Spa), Disney El Rey León - La Gran Aventura de Simba (Spa), Disney La Casa de Mickey Mouse (Spa), Disney La Sirenita - El Viaje Fantástico de Ariel (Spa), Disney Mickey - La Aventura Mágica de Mickey (Spa), Disney Winnie the Pooh - En Busca de la Miel (Spa), Disney Winnie the Pooh - En Busca de la Miel (Spa, Rev. 122), Disney/Pixar Buscando a Nemo - Los Descubrimientos de Nemo (Spa), Disney/Pixar Ratatouille - Las recetas del Remy (Spa), Disney/Pixar Toy Story 2 - El Rescate De Woody (Spa), Disney/Pixar Wall-E (Spa), DreamWorks Monstruos contra Alienígenas (Spa), Mundo Elmo - Grandes descubrimientos de Elmo (Spa), Nick Jr. Dora La Exploradora - La Aventura arregla-todo de Dora (Spa, Rev. 222), Nickelodeon Bob Esponja - Un día en la vida de una esponja (Spa), Osos Amorosos - Una Lección de Amor (Spa), Spider-Man y Amigos - La Aventura Del Doctor Octopus (Spa), Spider-Man y Amigos - Misiones Secretas (Spa), Walt Disney La Cenicienta - Los sueños mágicos de Cenicienta (Spa, Rev. 222), Zayzoo - Mi Amiga del Espacio (Spa) [TeamEurope, ClawGrip]
Software list items promoted to working
pc98: C.G. Gallery Master_98, CG Tsukuuru 3D, CRW 2, Cal III - Kanketsuhen, Cal Piss Water - Ayashii CG Shuu, Can Can Bunny 2 - Superior, Can Can Bunny 4 - Premiere, Can Can Bunny 5 - Extra, Can Can Bunny 5½ - Limited, Canaan - Yakusoku no Chi, Challenge the Touch-Type 2, Charade, Charade Magic, Check Six (Demo), Cherry Moderate, Cherry Moderate (Demo), Chuushaki - Hirasawa Nurse School, Clone Doll - Kagai Juugyou, Coin, Coming Heart, Computer Aided Economics, Computer Music Vol. 20, CrEastar - Planets in Legend, Custom Mate 2, Custom Mate 3, Cyber Illusion, Level II COBOL V2.1, SoftBank C Magazine 1991-11, SoftBank C Magazine 1992-01, SoftBank C Magazine 1992-02, SoftBank C Magazine 1992-03, SoftBank C Magazine 1992-04, SoftBank C Magazine 1992-05, SoftBank C Magazine 1992-06, SoftBank C Magazine 1992-07, SoftBank C Magazine 1992-09, SoftBank C Magazine 1992-10, SoftBank C Magazine 1992-11, SoftBank C Magazine 1992-12, SoftBank C Magazine 1993-01, SoftBank C Magazine 1994-04, SoftBank C Magazine 1994-05, SoftBank C Magazine 1994-06 [Carl, r09]
psx: 1-on-1 - Single Basketball (Jpn), 19-ji 03-pun Ueno Hatsu Yakou Ressha (Jpn), Advan Racing (Jpn), Captain Commando (Jpn), First Kiss Monogatari (Jpn), Ikuzawa Touru Kanshuu - Meisha Retsuden - Greatest 70's (Jpn), Running High (Jpn), S.Q. - Sound Qube (Jpn), Simple 1500 Series Vol.104 - The Pink Panther - Pinkadelic Pursuit (Jpn), Simple 1500 Series vol.88 - The Gal Mahjong - Love Songs - Idol wa High Rate (Jpn), Simple 1500 Series vol.90 - The Sensha (Jpn), Simple 1500 Series vol.97 - The Squash (Jpn), Space Invaders X (Jpn), Squaresoft Memory Card Data CD (Jpn), Super Live Stadium (Jpn), TFX - Tactical Fighter Experiment (Jpn), Ungra Walker (Jpn), Victory Spike (Jpn), Zig Zag Ball (Jpn), Zipangujima - Unmei wa Saikoro ga Kimeru! (Jpn) [Angelo Salese]
saturn: AI Shougi (Jpn), Cat the Ripper - 13-ninme no Tanteishi (Jpn), Dezaemon 2 (Jpn) [Angelo Salese]
icanguit: American Idol - Guitar Greats (K9907), Hot Wheels - Road Tunes (K9902), Nashville Hits (K9905), SpongeBob SquarePants - Surf's Up (K9903) [Sean Riddle, David Haywood]
leapfrog_leappad_cart:
5th Grade Math (UK), ABC-Abenteuer (Germany), Englisch Kurs - Let's go 3 (Germany), Englisch Kurs - Let's go 4 (Germany), FUN-damentals Series - 4th Grade Math (UK), FUN-damentals Series - Smart Guide to 3rd Grade (UK), FUN-damentals Series - Smart Guide to 5th Grade (UK), Hop on Pop - Based on the Book by Dr. Seuss (UK), Leap 2 - Math - The Great Dune Buggy Race (UK), Leap and the lost Dinosaur (UK), LeapFrog Schoolhouse - Level 3 - Helping Others (UK), LeapPad Interactive Book (UK), Music - Hit it, Maestro! (UK), Phonics Program - Lesson 10 - Compound Words - A Fisherman's Tale (UK), Pre Reading - Leap's Friends From A to Z (UK), Reading - Disney/Pixar Finding Nemo (UK), Sed de Saber - English as a Second Language Edition - Book 1 - Getting Started (Spain), Sed de Saber - English as a Second Language Edition - Book 2 - A New Job (Spain), Sed de Saber - English as a Second Language Edition - Book 3 - Daily Activities (Spain), Sed de Saber - English as a Second Language Edition - Book 4 - Health and Safety (Spain), Sed de Saber - English as a Second Language Edition - Book 5 - Community Interactions (Spain), Sed de Saber - English as a Second Language Edition - Book 6 - How do you say... (Spain), What will you be? (UK) [TeamEurope]
Disney Princesas - Cuentos de las Princesas (Spain), Fiesta in the House! - ¡Party en la Casa! (Spain), LeapPad - Libro Interactivo (Spain), El Rey León (Spain), ¡Yo aprendo inglés! - Mis Primeras 500 Palabras en Inglés (Spain) [TeamEurope, ClawGrip]
leapfrog_mfleappad_cart: Disney Princesas - Las Princesas Disney (Spa), El gran día de Croki (Spa), Mi Primer Día de Escuela (Spa) [TeamEurope, ClawGrip]
vsmile_cart: Scooby-Doo - Misterio en el Parque (Spa) [TeamEurope, ClawGrip]
vsmile_cd:
The Amazing Spider-Man - Countdown to Doom (USA, Rev. 2), Disney/Pixar Cars - In the Fast Lane (USA, Rev. 1), Disney/Pixar Cars - In the Fast Lane (USA, Rev. 3), Nick SpongeBob Schwammkopf: Ein Schwamm voller Ideen (Ger), Nickelodeon SpongeBob Squarepants - Idea Sponge (USA, Rev. 1), Nickelodeon SpongeBob Squarepants - Idea Sponge (USA, Rev. 2), Shrek the Third - The Search for Arthur (UK), Wacky Race on Jumpin' Bean Island (UK), Wacky Race on Jumpin' Bean Island (USA, Rev. 2) [redump.org, ClawGrip]
Bratz - El Misterio del Collar (Spa), Carrera Loca en la Isla de las Vainas Fritas (Spa), Cars - El Carril Rápido (Spa), Disney Princess - El Castillo de las Princesas (Spa), Nickelodeon Bob Esponja - Misión Esponja (Spa), Scooby-Doo: Viaje al Pasado (Spa), Shrek Tercero - ¿Dónde Está Arturo? (Spa) [Diego Bartolomé, redump.org, ClawGrip]
vsmileb_cart: Un Día en la Granja (Spa) [TeamEurope, ClawGrip]
Source Changes
dec0.cpp: Converted to use µPD4701A device for trackball input. [AJR]
tms9900, tms9980a, tms9995: Made CRU read addressing consistent with write addressing. [AJR]
Added skeleton CPU device and disassembler for National Semiconductor High Performance microController (HPC) architecture. [AJR]
i186: Added interrupt controller registers to debugger state [AJR]
Exclude scheduled devices that don’t expose a base program counter from numerical indexing for debugger commands. [AJR]
Add AHA-1542A, AHA-1542B, and BIOS v1.02 of AHA-1542C ROMs from Adaptec. [AJR]
cdc721: Reduced character height to make all rows fit. [AJR]
freekick.cpp: Documented connector pinouts. [AJR]
mcs51: Updated old hack to break out of JB INT0/INT1 loops when interrupt is triggered. [AJR]
tmp68301: Merged on-chip peripheral emulation with CPU device. [AJR]
Added skeleton Adaptec AHA-1740 and AHA-1742A ISA devices. [AJR]
Added ROMs for BusLogic BT-542B ISA SCSI controller. [AJR]
odyssey2.cpp: Fixed videopac machine. [AmatCoder]
mc6845.cpp updates: [AmatCoder]
Don’t reset line counter when screen parameters are changed.
Check vertical sync condition when frame is reset if vertical sync width is supported.
upd765.cpp: Made Read ID return command if execution phase is reached but ID is not found. [AmatCoder]
dsk_dsk.cpp: Report error if image has more heads and/or tracks than the drive supports. [AmatCoder]
spectrum.cpp: Fixed bit 6 value returned from port 0xFE (fixes MT06439). [AmatCoder]
Today we’re proud to deliver MAME 0.194, the first MAME release of 2018. Following on from the optimisation in last month’s release, MAME now features a Hyperstone E1-XS recompiler, giving substantial performance improvements in a number of Korean games. Several issues affecting cheats, lua scripting, the internal debugger, and disassembly have been resolved. We’ve added support for the prototype Atari game Cyberstorm, and Gaelco’s Last KM which was designed to integrate with an exercise bike. This release expands and improves support for TV games with fixed software. Additions include the TV Boy II, Super TV Boy, and Radica Space Invaders. Emulation has been substantially improved for games using NES-derived hardware from V.R. Technologies. The flow of LCD handheld games shows no sign of abating This month we’ve added Thief in Garden, Super Double Dragon, Vindicators, Skeleton Warriors, and The Incredible Crash Test Dummies. There are plenty more improvements to FM Towns emulation in this release, allowing more games to boot and fixing graphical errors. The Matsushita MyBrain 3000 and closely-related Ericsson Step/One have been promoted to working. Acorn Electron peripherals have been overhauled and several new options are available. In arcade emulation, we’ve got improved graphics emulation for Nintendo’s Popeye, and support for two more bootleg versions. There are also improvements to graphical effects in several Data East games, and improvements to IGS PGM2 emulation making Knights of Valour 3 playable. Plenty more alternate versions of supported arcade games have been added. One does deserve a mention, and that’s Bioplaything Cop, a prototype of Gaelco’s Biomechanical Toy. As always, you can get the source or Windows binaries from the download page.
Cadash (Spain, version 1) [caius, The Dumping Union]
Cookie & Bibi 2 (set 2) [Hammy]
Driving Force (Galaxian conversion, Seatongrove UK) [Ivàn Adrià, The Dumping Union]
Four Trax (Asia) [Arzeno Fabrice, The Dumping Union]
Game Fighter (bootleg) [incog]
Kick Goal (set 2) [balrog]
Knights of Valour 2 / Sangoku Senki 2 (ver. 104, 102, 100HK) [twistedsymphony]
Knights of Valour 2 New Legend (V300, Oversea) [unknown]
Knights of Valour 2 New Legend (V301, Oversea) [unknown]
Knights of Valour 2 New Legend (V302, Oversea) [unknown]
Knights of Valour 3 (V101, China, Hong Kong, Taiwan) [Peter Wilhelmsen, Morten Shearman Kirkegaard, David Haywood, MetalliC]
Maniac Square (unprotected, Version 1.0, Checksum 66B1, 960419/1 PCB) [f205v]
NEW Moero!! Pro Yakyuu Homerun Kyousou [ShouTime, Ryan Holtz, Neil Moore, Bryan Mobley, Gary Kertopermono, Jeffrey Gray, Damian Rogers, Smitdogg, The Dumping Union]
Oriental Legend 2 (V101, Japan) [Peter Wilhelmsen, Morten Shearman Kirkegaard, ShouTime, Mouloud Bessaad, Dullaron, Christian Ricolleau, Marisol Nunez Serrano, Renato Mucciarelli, Jeffrey Gray, John Wilke, Darksoft, Ryan Holtz, Smitdogg, The Dumping Union]
Oriental Legend 2 (V103, Japan) [Peter Wilhelmsen, Morten Shearman Kirkegaard, ShouTime, Mouloud Bessaad, Dullaron, Christian Ricolleau, Marisol Nunez Serrano, Renato Mucciarelli, Jeffrey Gray, John Wilke, Darksoft, Ryan Holtz, Smitdogg, The Dumping Union]
Oriental Legend 2 (V104, Japan) [Peter Wilhelmsen, Morten Shearman Kirkegaard, ShouTime, Mouloud Bessaad, Dullaron, Christian Ricolleau, Marisol Nunez Serrano, Renato Mucciarelli, Jeffrey Gray, John Wilke, Darksoft, Ryan Holtz, Smitdogg, The Dumping Union]
Blake Stone: Aliens of Gold (v2.1), Blake Stone: Aliens of Gold (v3.0), Inca 2: Wiracocha (French/German/English) Inca (Italian), Links 386 Pro, Links Championship Course: Bountiful Golf Club Championship Course, Simon the Sorcerer, Wing Commander II - Vengeance of the Kilrathi - Speech Accessory Pack [Arcade Shadow]
A-Train Construction Set, Aces of the Pacific, Aces of the Pacific Expansion Disk - WWII: 1946, Aces Over Europe (French), Byte Size Software #137 - Boppin' & Dits and Dats, Byte Size Software #149 - AJ's Quest & Machine Nation, Spectre Challenger (V1.1, 1993-11-08) [Justin Kerk]
ibm5170_cdrom.xml:
3-D Ultra Pinball (Budget Sierra Originals Version), 5 Plus One - Super Tetris (Compilation), A-10 Cuba!, Ace Ventura (Germany), Activision Game Vault Volume 3, Activision's Atari 2600 Action Pack 2, Activision's Atari 2600 Action Pack (Megapak 8) (Europe), Advanced Destroyer Simulator, Advanced Dungeons & Dragons 2nd Edition Masterpiece Collection, Afterlife (US v1.1), AH-64D Longbow (Spain), Air Warrior III, Air Warrior Plus (v1.16b), Alien Legacy (v1.10), Aliens - A Comic Book Adventure (v1.01A), Amazon - Guardians of Eden, Arcade's Greatest Hits - The Midway Collection 2, Are You Afraid of the Dark - The Tale of Orpheo's Curse, Armored Fist, Around the World in 80 Days, Ascendancy, Ascendancy (Germany), Atari Arcade Hits 1, A.T.F. - Advanced Tactical Fighters (Germany v1.01f), A.T.F. - Advanced Tactical Fighters (v1.03f), A.T.F. - NATO Fighters (Data Disc), Atlantis - Das sagenhafte Abenteuer (Germany), Awesome Adventures of Victor Vector & Yondo, The - The Cyberplasm Formula, Bad Mojo, Bad Mojo (Germany), Banzai Bug, Baphomets Fluch, BARQ - The Rise of Freedom, Battle Isle 3 - Shadow of the Emperor, Beneath a Steel Sky (Multi 5), Bermuda Syndrome (Germany), Betrayal in Antara, Bioforge (vf1.01), Blade Runner, Bloodwings - Pumpkinhead's Revenge, Blue Force, Bobby Fischer Teaches Chess, Bodyworks Voyager, Brain Dead 13 Starring Fritz (Germany), Bram Stoker's Dracula (Multi 5), Bud Tucker in Double Trouble (Germany), Buichi Terasawa's Takeru - Letter of the Law, Bundesliga Manager Professional, Buried in Time - Verschollen in der Zeit (Germany), Burntime, Caesar II (Budget v1.2), Caesar II (CMC v1.2), Caesar II (Germany v1.0), Campaign, Capitalism (Germany v1.0), Capitalism (Germany v1.02), Castle of Dr. Brain, Central Intelligence, Championship Manager 2, Chewy - Esc from F5, Chill Manor (v1.99), Civilization (Budget), Civilization & Mantis, Classic Games for OS/2 Warp, Club Dead, Club Football - The Manager, Comanche 3, Comanche 3 (Germany), Comanche CD - White Lightning, Combat Air Patrol, Comix Zone, Command & Conquer Teil 1 - Der Tiberiumkonflikt (Germany), Conspiracy, Creative Reader Collection, Crime City, Crusader - No Regret (Germany), CyberBykes - Shadow Racer VR, Cyberia 2 - Resurrection, Cyberia - Mission Norway (OEM v1.87), Cyberia - Project Description (OEM), Cyclemania, Detritus - The Daemon's Quest, Discoveries of the Deep, Dungeons of Kremlin, Dunkle Schatten 1 & 2, EcoQuest 1 - The Search for Cetus, Enemy Star, Eric the Unready, Escape from Delirium, F-29 Retaliator, Formula One Grand Prix, Front Page Sports - Baseball '94, Halloween Harry - Alien Carnage, Key CAD Complete Creations, Plumbers don't Wear Ties, The Civil War, The Complete Ultima VII (Multi 3, Budget) [archive.org]
cd32: Arabian Nights, Battletoads, Benefactor, Black Viper Bubba 'N' Stix, Bubble 'N Squeak, Chuck Rock, Chuck Rock II - Son of Chuck, Dangerous Streets, Darkseed, Donk! The Samurai Duck!, Dragonstone, Emerald Mines, Flink, Fly Harder, Frontier - Elite II, Global Effect, Gloom, International Karate +, Kid Chaos, Marvin's Marvellous Adventure, Myth - History in the Making, Overkill + Lunar-C, Roadkill, Skeleton Krew [EoceneMiacid]
electron_cart: Advanced Plus 34, Advanced Quarter Meg RAM, Cumana Floppy Disc System v1.01, Cumana Floppy Disc System v1.02, Slogger Electron Disk System v1.00, Slogger Electron Disk System v1.02, Slogger Electron Disk System v1.03 [Nigel Barnes]
ibm5150: ABC's Wide World of Sports Boxing [Justin Kerk]
ibm5170_cdrom:
3D Power Games Volume 1, 688I Hunter-Killer, Aces of the Pacific, Aces over Europe, Alien Odyssey (Europe), Animal, Archibald Applebrook's Abenteuer (Germany v1.00), Archon Ultra (v1.1), Ark of Time, Back to Baghdad, Baphomets Fluch II - Die Spiegel der Finsternis (Germany A707197), Baphomets Fluch II - Die Spiegel der Finsternis (Germany CVIR102400), Battle Bugs, Battlecruiser 3000 AD, Blood Bowl, Blown Away, Broken Sword II - Las Fuerzas del Mal (Spain), Chronomaster, Clif Danger, Command Adventures: Starship, Command & Conquer: Red Alert, Command & Conquer - Red Alert (Budget), Command & Conquer - Red Alert (Netherlands), Command & Conquer Teil 2 - Alarmstufe Rot (Germany), Conqueror AD 1086 (Germany), Conquest of the New World Deluxe Edition, Creatures (Germany), Cyber Judas, Darker, Frankenstein - Life or Death, Fuzzy's World of Miniature Space Golf, The 11th Hour - Der Nachfolger von 7th Guest (Germany), The Curse of Monkey Island, [archive.org]
Bakusou PC Choro Q (Japan), Battle BEAT 2000 L.E (Japan), Briganty - The Roots of Darkness for Windows (Japan), Moon (Japan) [Rod_Wod]
stepone_flop: Custom integrated office suite [Mattis Lind, Edström]
Translations added or modified
Chinese (Simplified) [YuiFAN]
Chinese (Traditional) [YuiFAN]
Dutch [Jos van Mourik]
German [RafTacker]
Greek [BraiNKilleRGR]
Source Changes
ygv608.cpp improvements: [Agiri]
Added mosaic effect for Galaga Arrangement Ending/Staffroll.
Guessed that R#13 is used for transparent color – fixes ‘COLOR TEST’ in ND-1 self-test.
Fixed a small graphics glitch in Rally-X Arrangement.
Added option to disable saving NVRAM on exit. [AJR]
Added ER1400 serial EAROM device. [AJR]
Fixed many disassembler bugs: [AJR]
mc68hc11: Fixed dissassembly of instructions with 16-bit operands (immediate or direct).
m6809: Fixed disassembly of relative instructions.
lc8670: Fixed disassembler to make it not completely broken.
mcs48, s2650: Use paged mode for disassembler.
lr35902: Fixed disassembly.
attache: Added RS-232 serial ports. [AJR]
f1gp: Fixed getting stuck on “ID CHECK”. [AJR]
splash: Draw sprites in reverse order (fixes MT6791). [AJR]
Fixed masking of signed integer types in debug state. [AJR]
citycon: Fix sound CPU speed, and hooked up PSG read (fixed cop car spin sound). [AJR]
Delta for Binary Options If you closely look at the payoff function for Binary Call Option, it will resemble the price movement of the simple call option. The price of a binary call gets the structure similar to that of the delta of a simple call option. And hence the delta of the binary call option gets the same shape or structure as the gamma ... Man kann mit Delta auch vor dem Kauf abwägen, ob sich ein Investment lohnt. Befindet sich Delta etwa bei 0,5 oder -0,5, wird der Hebel und damit der mögliche Gewinn des Scheins eher gering sein. Tuesday, 4 April 2017. Binäre Option Delta Gamma In engem Zusammenhang nun mit dem Delta steht das Gamma. Das Gamma einer Option verrät, wie potent sich das Delta dieser Option ändert, wenn sich der Basiswertkurs um eine Einheit verschiebt, sich aber alle anderen Größen nicht bewegen. Aus der Sichtweise der Mathematik gesehen, ist das Gamma die zweite Ableitung des Preises der Option nach dem Preis des Basiswertes. Für die Besitzer von ... The Gamma of an option measures the rate of change of the option delta. Its' number is denoted relative to a one point move in the underlying asset. For example, if the gamma for an option shows 0.015 with a delta of 0.45 then a full point move in the stock (i.e. 35 to 36) means the delta will move to 0.465. Delta of a digital (or binary) option is like the normal distribution probability function , approaching 0 at far OTM / ITM conditions and representing a very high peak at ATM. The peak at ATM approaches infinity as we approach the maturity. This is never 0.5 like a vanilla option since the payoff never simulates the payoff of the underlying. If you want to have an approximation for delta at ... delta of binary option looks like gamma of normal euro option. p/l graph of binary option looks like delta of normal euro option. $\endgroup$ – confused Jan 12 '18 at 17:22. add a comment 2 Answers Active Oldest Votes. 5 $\begingroup$ No. The deltas are very different particularly when they are approaching the strike and expiry. You have one instrument that pays off linearly with the ... Digital Option Delta Gamma. Binary call option gamma measures the digital option delta gamma change in the binary call option delta owing to a change in the algo trading strategies underlying price and is the gradient of. A hedge for the put option which matches the payoff in any binäre optionen signalisieren dienst. Barrier options may or may not have significant digital features. Each one ... The Gamma rises sharply when a binary option nears or crosses the target. The delta of the option portfolio is the amount of the spot position that the portfolio generates. Delta-hedging involves significant transaction costs and time Options PnL incorporates substantial path dependency unless you build an entire portfolio Liquidity may be difficult for very far OTM options, and they are ... Gamma, represented by the Greek alphabet ‘γ’, plays an important part in the change of Delta when a binary call/put option nears the target price. The Gamma rises sharply when a binary option nears or crosses the target. In short, Gamma acts as an indicator for the future value of Delta. Thus, it is a useful tool for hedging. Theta. Theta, commonly referred to as time decay, would ...
How to Use Binary Options with High Gamma Strategies
Bill Poulos & Profits Run Present: The Power of Options Delta When Trading (What Is Delta) - Duration: 7:42. Profits Run 86,738 views In diesem Video finden Sie eine Erklärung über den Unterschied zwischen Binäre Optionen und Vanilla Optionen! Mehr über Vanilla Optionen: http://binaryoption... [my xls is here https://trtl.bz/2tIZxr7] Position Greek = (+/-) Quantity * Percentage Greek. If we are short a call option, then we are short position delta and short position gamma. If we are ... Gamma is the rate of change of an option's delta, given a $1.00 move in the underlying. In other words, this is the acceleration of an option's delta. Our ma... How is the price of an option determined, and what are options greeks? In this video, we cover everything you need to know to understand these concepts and h... Nadex binary options and spreads can be volatile and investors risk losing their investment on any given transaction. However, the limited-risk nature of Nadex contracts ensures investors cannot ... Is it possible to hedge a spot trade with binary options? This short video will explain the problem with binary option hedging. In today's episode of let's talk stocks, we are going to take a look at option greeks. We'll to talk about delta, gamma, theta, and vega. In this video, we w... Binary options - the best investment in your future! Faster and easier than Forex! Says the course and give yourself up to 92% profit.! SIGN UP HERE / Faster and easier than Forex! Says the course ...