MMC1 Dev

hayabusafmw · Post by **hayabusafmw** » Thu Jun 05, 2008 7:33 am

hi guys long time no see

Im about to make a nes copy cart , with Zelda ,

it has Ok chr , so i guess this one i don't touch , i think it's the top mask rom on top of the PRG right?

the prg & the one on his left i take them out???

also can anyone help me remind , me how to do the task , i know i need to make the pinout match my eprom's pinout ,

ill be using 29f040

hayabusafmw · Post by **hayabusafmw** » Thu Jun 05, 2008 7:45 am

darn i think i put this in the wrong section , ^^

Bregalad · Post by **Bregalad** » Thu Jun 05, 2008 8:07 am

Look at this doccument and apply the modification SNROM (mapper 1), that should do it.

hayabusafmw · Post by **hayabusafmw** » Thu Jun 05, 2008 10:09 am

just started bending my socket , but i then realised it's true nes mask rom are 28 pin & my socket are 32.... if i follow the direction correctly the bent pins aren't correct since some will toutch nothing...

but if i see clearly on the Snrom zelda cart i have , there's 2 extra holes on each side making it possible for 32 pins do i connect pin 1 to those? or pin 1 to the original holes...?

Bregalad · Post by **Bregalad** » Thu Jun 05, 2008 10:33 am

The PRG Slot is basically 32 pins, the first 4 are unused on Zelda because it is only 128kb. The doccument is for 32-pin chips.

hayabusafmw · Post by **hayabusafmw** » Thu Jun 05, 2008 10:43 am

so i assume pin 32 goes to one of the solder extra holes & voila

hayabusafmw · Post by **hayabusafmw** » Thu Jun 05, 2008 6:28 pm

when they say , let say ,

Pin 1 to pin 24 (they mean pin 1 of the Socket (bent pin) up to the 24th hole of the 28 pin original chip right?