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Here's an example of pea from Zombies Ate My Neighbors. call nmi routines: $80/83E0 A5 0C LDA $0C [$00:000C] A:C349 X:002C Y:0100 P:eNvmxdIzc $80/83E2 F0 33 BEQ $33 [$8417] A:C349 X:002C Y:0100 P:eNvmxdIzc $80/83E4 85 10 STA $10 [$00:0010] A:C349 X:002C Y:0100 P:eNvmxdIzc $80/83E6 A2 38 00 LDX #$003...

Of course if the game works correctly on hardware any odd behavior on an emulator is the emulator's problem, so at least we can let people know that's the issue if it comes up.

On Geiger SNES9x 1.43 the 1-up sound crashes here. Don't know if it's just this emulator.

You couldn't release half-complete games, super repetitive games or very simple homebrew-like games and such that you often see on other systems (especially on computers which usually has no licensing system at all, and can be programmed by anyone) simply by paying the license fee. Yeah, Nintendo h...

Do first party games explicitly clear decimal mode? Yes. IMO there's no point in overthinking why most games uses CLD when starting up. They just do. Interestingly enough, the (very incarucate) emulator REW actually simulates the decimal mode if enabled ! This is funny. Maybe devs were told to do t...

Yep, Prince of Persia used EOR to create a whole new enemy. Not "EOR #$FF", though.
https://www.youtube.com/watch?v=sw0VfmXKq54&t=12m30s

I had a hardware glitch happen with the PCE/TG-16 game Parasol Stars one time. Somehow I started a two-player game with only one controller plugged in (two controllers must be plugged in to start one normally). Years later I looked at the game in Mednafen to see if it was a software bug - since the ...

As far as the leaked N64 code goes it's mostly binary obj files. It looks like the iQue company (afaik the source of the leaked files) was only supplied enough code to edit the Chinese language into the games. However, what uncompiled code does exist has an exact matching counterpart in the RE'd Mar...

Sorry to hear that and prayers to his friends and family.

I have a theory of working "backwards" here. Running the game and then analyze each memorylocation and give all locations a label (in Mesen) which might make reading the code easier in the end..(?) That's how I figured out everything in the few games I've attempted to disassemble. Start from the re...

2MB RAM might sound like a lot, but you have to remember its doesn't have a ROM cart so it has to hold all logic, decode buffers and your ELF and you really want to get your code into the 4K of cache. A recent YT review of the original Bonk series on Turbografx pointed out Bonk 3 on CD has fewer fr...

Fun fact: A programmer who worked on the N64 version of Resident Evil 2 remarked that Capcom's original C code for the PS1 looked a lot like assembly (I'd link the article but it's mostly about how he got fmv running on N64).

I prefer the Intel syntax (mov dst, src) because the first thing I see is the register to be modified. This issue basically doesn't exist in 6502 because you know from the operation if the reg or mem is affected, so at least that's on the leftmost part of the instruction.

It would be amazing if the Mario 64 source that's supposed to be in the leak was anywhere near as readable as the RE project (even if you could read the Japanese comments).

Come to think of it, SMW might've included the key/lock exit so the player wouldn't rack up too many bonus games by going through the levels twice. When NSMB brought back the concept of hidden exits, they used the regular flagpole. Also, while most of the time the key was right next to the lock, som...