adapting a cart to flash.

[rokubungi]

my programmer sucks.

I cannot reliably program eproms only flash.. and there is no way to add a power supply it's USB ONLY.

what differences would there be for a TSROM when using a 29f002t ?

[Memblers]

I checked the 29f002t datasheet, there is a /reset pin and /write pin, so for those 2 pins you want to connect those to VCC (5V), since you don't want either of those conditions to happen. I believe they were pins 1 and 31, but you'll want to refer to the full pinouts for comparison.

I think it's an improvement over EPROM, not needing an external power supply is an advantage.

edit: http://nesdev.com/NES%20ROM%20Pinouts.txt
29f002 pinouts seem to differ between the STMicro and Macronix versions.
http://www.alldatasheet.co.kr/datasheet ... 2T-12.html

[rokubungi]

actually I have PMC flash chips the exact one is this
http://www.datasheetarchive.com/Pm29F00 ... sheet.html

I tried to match everything up based on the nes rom pinouts and got a partally working program with half the graphics ok and the other scrambled.

[Memblers]

I take it this is an MMC3 board, so there is no H/V selection jumper.

Hm, I believe some CHR-ROM sizes had a different pinout from PRG-ROM, so if it is a CHR ROM you had replaced, make sure you've got the right pinout.

[rokubungi]

ah I found the problem I tried jumpering the write pin to ground instead of +5 looks like hooking pin 31 to VCC makes it work I doubt this will work with larger flash sizes though since hole 2 of the program is A18

fortunately not much uses 4 megabit roms.