Hypnadogic Pup @Fuego@awoo.space
Mixie trash
- she / her -
Joined Apr 2017
@Tanuki its checking the vblank bit in ppustatus register. It waits for two full frame redraws to resync the ppu and cpu after a reset. The third inf loop at 8057 is after nmi is enabled and the next vblank after that causes the handler to be called
Hellbird
@angrboda i couldnt handle it. It always made my heart race like mad. Im astounded i stayed for so many years.
@Litchi nabiki is my fave but i dont want to cut my hair. Im probably an akane anyhow...
@Litchi ill do akane :)
@Litchi shampoo is your wife??? You need to do a ranma cosplay for real tho
@Litchi shampoo is your wife??? You need to do a ranma cosplay for real tho
@BadLilKitten21@dev.glitch.social this snoot is so so good
okay - I feel much better about this now - I'm, ready for @Tanuki to solve all my PPU and speed issues for me now that I'm fairly confident in the CPU and debugger
@vahnj apparently also I just learned that CMP CPX and CPY do not set carry in any sane way
They just set carry if the register is larger than the operand which mathematically... is.... nonsense...?
@vahnj *dances* spent an hour walking back from the crash to find where i differed and when and then I've been scratching my head staring at that thing... haha
@vahnj so if we want to test
00 - A0
~0 is 0xFF + 1 is 0x100 > 0xA5
which is right and 0 > 0xA5 is wrong....
you're right - thank you :)
register should be masked but the test here shouldnt be <3
@vahnj 8 bit - anding with 0xFF confines it to 8 bits
my carry flag conditional for subtraction operations is not right... somehow....
return ((~oldSrc + 1) & 0xFF > oldDst)
NES debugger is getting useful :)
python debugger.py smb1.nes
> bp 90cc
> g
0x90cc LDX IMM 0x7
> d S L2
0x01fd: 2e 80
> bw 01fd
> g
Write at 0x1fd
0x90de DEY
>
>.< its bit 7 of PPU control register 1... that masks it...
The cpu cant mask it, but the ppu can... thanks internet
How come the NES PPU non maskable interrupt DOESNT run during the first two VBlank cycles of a game's start up, but DOES run later at the jmp loop?
isnt it non maskable? WHAT MASKS IT
@Mycroft do they talk about the wild hunt? and yule bucks?
I plan to get very drunk with a pack of my friends and roam the neighborhood yelling obnoxious songs until people give us money to go away, and if they don't pay us we'll sack their house
Very traditional <3
HAPPY YULE MOTHERSQUEAKERS!
NOTHING MATTERS DURING YULE
THIS IS THE NON-TIME OF THE NOT-YEAR
ITS NOT 2017 ANYMORE
ITS NOT 2018 YET
GET DRUNK AND DO SOMETHING DUMB!
@jk this drives me insane.
Mixie trash
- she / her -
Joined Apr 2017
