nesdev.org

just so the ideas out in the open.. i'm using the delay at the beginning of the SNES lock to detect the system because the NES doesn't have it One doesn't need a crystal ball ^ ^ AFAIK, a majority of games detect the region on runtime by checking the fourth bit of register $213f. I don't know if you...

The Lock sends its 4 bit random value to the key. Bit 0 of that random value is going to already be known when the key sends it back. Next, Bit 0 of the next value, also sent by the key, effectively specifies the region. so the 8th bit coming from the key should tell the region for the snes key? I'...

I'll try to watch an N64 do its CIC stuff. Can you point me at the ROM dump? The die photos I found at http://retroactive.be/mirror/n64/cic_die/ are nice but the ROMs are unreadable. Are there any others? i have two disks marked "N64 CIC" i don't have a drive plugged in tho.. definitely h...

Here's a PIC implementation for the SNES CIC. Key mode only, auto region fallback (requires user reset) Doing a combined NES/SNES CIC clone is a cool idea, especially since there is no open source NES CIC clone yet. nice job! guess i'm starting with the nes cic.. then i'll make it universal i only ...

i don't like pic micros.. how about an open source AVR?
wouldn't mind doing the time for a universal nes / snes chip

..
edit: removed dumb question

oh sorry! totally forgot about family basic..
i want to use assembly language..
i found this

" OUT.2 Tape Output? (Should be 1 when accessing Keyboard)
PORT0-1 Tape Input

thanks

how can i read / write to the data recorder?
i'm writing code to read the famicom keyboard but i can't find anything about reading and writing data..
the only thing i found was "$4016 reads from the data recorder" on wiki

the only feature i would add to asm6 is a chr and prg label with a command line argument that makes it output the chr and prg files without changing anything :) ;header stuff .prg ;prg stuff here .chr ;chr stuff here so for a .nes file you would assemble it with "asm6 main.asm rom.nes" and...

i'm starting to like asm6 it's simple like nesasm but way better and open source no bugs that i've found

that was dumb of me... just after i posted

#<(somelabel) ;low

#>(somelabel) ;high

is it possible to do something like this with with asm6?

ldx #LOW(somelabel)
ldy #HIGH(somelabel)

it works in nesasm but asm6 give me "Extra characters on line."

thanks tokumaru

thanks everyone for all the help
i'll give ASM6 a shot! it's nice that it's open source
before i get to work...does it have any known bugs? sorry i can't help but be a little paranoid lol nesasm was crazy

that fixed the problem!
is their a list of bugs laying around?.. or a doc that better explains how its used? thanks for the help

i'm getting an error when i try assembling this.. i'm using nesasm3 i get the message "Incorrect addressing mode!" for both ( STY $F1,X ) and ( STY $F9,X ).. anyone know why?