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Alyosha
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PikachuMan wrote:
Put in code 1 without symbols in name, code 2 with many symbols in name, code 3 without symbols in name, save, re-open, is there a code or 2 missing? The Always Load Cheats is problematic. It sometimes deletes cheats and messes up the compare values.
I'll need a speicifc example of exactly what you put in.
MESHUGGAH wrote:
BizHawk 2.2.1 1. Colecovision TMS video mode 1, Gulkave and Pit Stop 2. Intellivision The Executive ROM HLT
1. Known issue, I'll make an issue on the issue tracker for it. 2. What game is this?
Alyosha
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Everything is pretty closely coupled together, I don't think you can really remove anything to speed it up.
Alyosha
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For NES, you have the QuickNES option (Config -> Cores -> NES) its much faster. For A7800, nope EMU7800 is gone for good. Occasionally I try to make the code faster, but with limited success, but maybe in the future.
Alyosha
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Hmmm, Try getting a fresh install of 2.2.1. Then put ONLY the USA/Europe BIOS in the firmware folder. Then try loading the ROM. I tried this just now and it worked without issue. If this still doesn't work then I'm pretty stumped.
Alyosha
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Sure, it's under the 'SMS' header in the menues. Ah, I think I see the problem, you probably can't even get to that since it's not letting you load the ROM. (It's probably looking for the JPN BIOS and not finding it.) Try deleting your config.ini file. This will reset the core back to it's default which is 'export.' Then you should be able to load the game up. I should fix that.
Alyosha
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Tested sonic Chaos just now. Works fine with: Active Firmwares: Export : C315672807D8DDB8D91443729405C766DD95CAE7 Check your region settings and make it's on 'auto' or 'export.'
Alyosha
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My goodness y'all sure are throwing a lot of firepower at this one. The results are impressive so far but I hope you don't get burned out.
Alyosha
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Cool! I'd also be interested in knowing what went wrong with the previous ACE setup, must be something rather obscure or subtle for bsnes/lsnes not to have caught it. Voting yes.
Alyosha
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Clever improvement with Peach, yes vote.
Alyosha
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http://tasvideos.org/userfiles/info/44988607938034213 Here is a partial re-sync of the TAS in BizHawk. I ran into some trouble towards the end of Ice man stage as a bird spawned that wasn't there in the original and I oculdn't get a good zip. Maybe someone who actually knows how to TAS mega man can do better. The good news is that Both BizHawk and Mesen agree that this is exactly what happens, which means they agree to a single instruction. This gives me high confidence that a console verification will work.
Alyosha
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feos wrote:
Extreme botting was used to trigger this event. I remember millions of rerecords in the original submission. I disagree that having the bot hit an event 2 instructions too late is just an emulator glitch in principle. The event is right there, align objects differently and it will hit on a more accurate emulator.
Yes you are right, it is possible, I just found a setup for it! It works on both BizHawk and Mesen. Looks like this one might be moving towards console verification! :)
Alyosha
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I looked a little into Rockman to see how far off things were in IceMan stage to make the 'DelayWaterCurrent' glitch work in BizHawk. First, the idea of the glitch is that during lag frames, it's possible for an NMI to interrupt processing when ROM bank is changed to 6. If the NMI occurs after the ROM bank is changed, but before the change is stored in the backup location ($42) then bank is not restored correctly once NMI is exited. This happens in FCEUX here:
c346972718   A:00 X:1F Y:04 S:FD P:nvUBdIZC  $D89B:A9 06     LDA #$06
c346972720   A:06 X:1F Y:04 S:FD P:nvUBdIzC  $D89D:8D 06 C0  STA $C006 = #$06
c346972731   A:06 X:1F Y:04 S:FA P:nvUBdIzC  $D4A8:48        PHA (NMI)
.
.
.
c346975662   A:05 X:05 Y:00 S:F7 P:nvUBdIzc  $D571:9D 00 C0  STA $C000,X @ $C005 = #$05
.
.
.
c346975697   A:06 X:1F Y:04 S:FA P:nvUBdIzc  $D582:40        RTI
c346975703   A:06 X:1F Y:04 S:FD P:nvUbdIzC  $D8A0:85 42     STA $0042 = #$05
In BizHawk, the NMI occurs too early by only 2 instructions:
D898:  F0  BEQ $D89B       A:00 X:1F Y:04 P:37 SP:FD Cy:346940446 nvTBdIZC
====NMI==== 
.
.
.
D582:  40  RTI             A:00 X:1F Y:04 P:26 SP:FA Cy:346943422 nvTbdIZc
D89B:  A9  LDA #$06        A:00 X:1F Y:04 P:27 SP:FD Cy:346943428 nvTbdIZC
D89D:  8D  STA $C006       A:06 X:1F Y:04 P:25 SP:FD Cy:346943430 nvTbdIzC
D8A0:  85  STA $42         A:06 X:1F Y:04 P:25 SP:FD Cy:346943434 nvTbdIzC
Two instructions are all that seperates possible and impossible in this case. The glitch itself is has to occur exactly between changing bank and storing in $42. Unfortunately it's hard to say why those 2 instructions of difference exist between FCEUX and BizHawk, so this is about all I know for now. I'll try some available LUA scripts to see if another setup is posible. Also, I'll try changing ppu power up timing as this is known to vary on console and might change timing by the small amount we need here. I also tested on Mesen and the setup fails there as well. If nothing else, I find this to be a very interesting example of just how difficult it can be to know what is an emulator glitch and what isn't.
Alyosha
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jlun2 wrote:
I'm not sure if it's just my computer, but when I was using TAStudios with GBHawk, saving a tasproj file (the Sailor Moon run to be specific) took a long time for some reason. Loading a branch also took a while. Is that normal? Saving seems to take shorter amounts of time when using the mgba core for GBA game TASing.
I'm not really sure, I'm not sure how that functionality works.
Post subject: Re: Super Mario Ultimate
Alyosha
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PikachuMan wrote:
Unfortunately, this hack does not run on BizHawk (both the NESHawk and QuickNES cores fail to load the hack). You have to use FCEUX.
Seems to work fine in NESHawk in the Dev Build, so I must have fixed whatever was breaking it since 2.2.1 was released.
Alyosha
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GBHawk isn't released yet, so this one might have to wait a bit. Thanks for putting it through it's paces though in a complete TAS. :)
Alyosha
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I did some research on what a 'no new content' goal of this game would entail. The value at $3D in RAM controls the speed of the enemies / divers. It increases every time you return to the surface with a diver. It doesn't matter how many divers you return with, even with 6 divers the value increases by one. Bahaviour changes all the way through the range 0-255. Some Degenerate behaviour occurs around 0xFB, but as long as you stored enough divers you can make it roll over back to 0. So the 'no new content' condition would require rescuing 256 divers (plus triggering the surface partolling sub to appear which is a different condition.) I don't really intend to do all that. I made a rough run up to 0x80 that wasn't optimized at all and it's just too tedious. Maybe it would make a good bot project for anyone who might be interested in such things.
Alyosha
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No more Kenseiden, 6 left!
Alyosha
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Nice work! Starting from scratch that's dedication. Yes vote.
Alyosha
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I'm not entirely sure what you are asking, but before you use Bizhawk make sure you download and install the prerequisites from here: https://github.com/TASVideos/BizHawk-Prereqs/releases
Alyosha
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jlun2 wrote:
... I'm not sure if it's because the reset timing is different, or if it will work if subframe reset is implemented, but I'm not sure how to trigger the boss in the first room like the current run. I have no idea if it's truely impossible due to my lack of (assembly) knowledge, but I hope not. ... How much difference gameplay wise is that? Does it affect the RNG (or syncing)?
Seems like we need trace logger in mGBA to sort that one out. The gameplay is quite different I can barely make it past the first bridge and then things fall apart. It could also be due to the other errors in the A2600 core at the time, either way it doesn't work. Also, coincidentally from current events it seems like [3424] SNES Super Metroid "game end glitch" by Sniq, total, Aran Jaeger in 07:09.68 is also impossible from discussion here. At least that one's getting a replacement presently.
Alyosha
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£e Nécroyeur wrote:
Guinness Officially Nixes Todd Rogers' Dragster Records https://kotaku.com/guinness-officially-nixes-todd-rogers-dragster-records-1822568394
Well, I guess it's over. I hope they still make the RAM analyzers though. They barely even got to use them.
Alyosha
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jlun2 wrote:
So.... [2285] GBA Densetsu no Stafy "demo glitch" by jlun2 in 03:28.68 Ok, so the glitch is that if you restart when opening the menu, the temp save messes up, and you end up loading wierd things. Reset must be done on a lag frame, which means it's a hard reset, so the BIOS will play back every time the glitch is used. This movie isn't technically "impossible", but IF you do this on console, the last boss makes zero sense to restart over and over due to the BIOS playing back over and over. The glitch REQUIRES a hard reset since it occurs during a lag frame, so if this run were to be done on mGBA, it must beat the last boss "legit" simply due to the BIOS taking too long. tl;dr An updated TAS of it will be forced to be slower due to BIOS if reset; last boss cannot be glitched without significant slowdown. Also the run resets like 3 times to reach the boss, so the BIOS will be forced to playback more than once anyways. If it's any help, I can try remaking it in BizHawk and submitting it. I hope it doesn't cause too much issues. Edit: This same scenario also occurs for Dementium the Ward TAS, but for 1 single situation during the mouth room boss, where skipping the cutscene causes crashes after the chapter and forces a reset. The BIOS on a console would make this slower than simply viewing the cutscene.
I think this is a very interesting case. My personal opinion is that our technical standards are way to low in this area, and I would like to see a realistic replacement. Quite interesting regardless. EDIT: Another interesting case is [2821] A2600 River Raid by Lord Tom in 1:22:47.90 The version of BizHawk used in this case has an error in the timer. The error is slight, but over an hour, it adds up to several seconds.
Alyosha
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Tested on BizHawk and yeah you need to use the full screen settings. For NesHawk go to NES -> Graphics Settings -> Full [0,239] You can do a similar thing in FCEUX in config -> video
Alyosha
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That’s pretty weird. Looks like an IRQ issue, I’ll take a look at it tonight.
Alyosha
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MESHUGGAH wrote:
I'm also unsure about that anyone will come here and post a published TAS that probably relies on an emulator bug which would require the knowledge of the game and platform itself (cause I guess you are looking for known cases, not potential ones).
Actually I am looking for potential cases. Sequest was assumed to be correct for 3 years, so I'm curious if there are other similar instances. Also I'm not so much interested in runs that simply fail to sync on console, that would be most runs. I'm interested in ones that have some fundamental error that can't be simply fixed.
feos wrote:
If the conditions are different, improving them and improving the run might fix the verification. If conditions used in that run are outright impossible, then it's pretty sad. Start from this post: http://tasvideos.org/forum/viewtopic.php?p=223361#223361
Yes this is precisely what I'm interested in finding out.