Hey there community,
I searched the web but couldn't find an answer to my problem. Maybe you guys can help me. I did some SNES-Repros in the past but I'm new to the NES
I'm about to build an Earthbound Zero for my collection. Is it possible to burn it on two 27C256's? The PRG and the CHR-File are 256kb in size.
If it is burnable, how to connect the eprom to the PCB?
I got this information from this site:
Well, a 27C256 has just 28 pins, so erm.. I don't have to mind the information about what to do with pins 30 and 31, right?
Any help is highly appreciated
I searched the web but couldn't find an answer to my problem. Maybe you guys can help me. I did some SNES-Repros in the past but I'm new to the NES
I'm about to build an Earthbound Zero for my collection. Is it possible to burn it on two 27C256's? The PRG and the CHR-File are 256kb in size.
If it is burnable, how to connect the eprom to the PCB?
I got this information from this site:
Quote:
TKROM & TSROM (mapper 4):
PRG socket:
Bend up pins 1, 2, 24, 30 and 31 (or cut tracks 2, 24, 30 and 31)
Solder pin 2 to hole 24 (A16)
Solder pin 24 to GND (OE)
Solder pin 30 to hole 1 (A17)
Solder pin 31 to hole 2 (A18)
CHR socket:
Bend up pins 1, 2, 22, 24, 30, 31 (or cut tracks 2, 22, 24 and 30)
Solder pin 2 to hole 24 (A16)
Solder pin 22 to hole 31 (CE or CHR /A13)
Solder pin 24 to hole 2 (OE or CHR /RD)
Solder pin 30 to hole 1 (A17)
PRG socket:
Bend up pins 1, 2, 24, 30 and 31 (or cut tracks 2, 24, 30 and 31)
Solder pin 2 to hole 24 (A16)
Solder pin 24 to GND (OE)
Solder pin 30 to hole 1 (A17)
Solder pin 31 to hole 2 (A18)
CHR socket:
Bend up pins 1, 2, 22, 24, 30, 31 (or cut tracks 2, 22, 24 and 30)
Solder pin 2 to hole 24 (A16)
Solder pin 22 to hole 31 (CE or CHR /A13)
Solder pin 24 to hole 2 (OE or CHR /RD)
Solder pin 30 to hole 1 (A17)
Well, a 27C256 has just 28 pins, so erm.. I don't have to mind the information about what to do with pins 30 and 31, right?
Any help is highly appreciated