I've had three attempts at making and Earthbound Zero cart so far and unfortunately...None have worked!! My first copy came on and played music, but was scrambled... My question is on the wiring. I've run across two different methods of wiring. I'm looking for some advice on which is best. The first wiring, the one I got to come on a bit is this:
- Bend up pin 1, 2, 24 & 30 on PRG eprom
- Solder into place of the masked rom.
- Tie pins 1 & 32 together (+5)
- Tie pins 22 & 24 together
- Tie pin 2 & pin 24 hole together
- Tie pin 30 & pin 1 hole together
- Bend up pins 1, 2, 22, 24, 30 & 31 on CHR eprom
- Solder into place of the masked rom.
- Tie pins 1, 31 & 32 together (+5)
- Tie pin 30 & pin 1 hole together
- Tie pin 24 & pin 2 hole together
- Tie pin 2 & pin 24 hole together
- Tie pin 22 & pin 31 hole together
This came from a forum and I've seen it a couple places online. The second method comes straight from the NA ezine. It is a little different. I've tried it once and still nothing. It is as follows:
PRG wiring: bend up pins 1,2,24,30,31
Connect pin 2 to hole 24
connect pin 24 to pin 16
connect pin 30 to hole 1
pins 1 & 31 remain unconnected.
CHR wiring: bend up pins 1,2,22,24,30,31
connect pin 2 to hole 24
connect pin 22 to hole 31
connect pin 24 to hole 2
connect pin 30 to hole 1
pins 1 & 31 unconnected.
Any advice on which to use would be greatly appreciated. Thanks
- Bend up pin 1, 2, 24 & 30 on PRG eprom
- Solder into place of the masked rom.
- Tie pins 1 & 32 together (+5)
- Tie pins 22 & 24 together
- Tie pin 2 & pin 24 hole together
- Tie pin 30 & pin 1 hole together
- Bend up pins 1, 2, 22, 24, 30 & 31 on CHR eprom
- Solder into place of the masked rom.
- Tie pins 1, 31 & 32 together (+5)
- Tie pin 30 & pin 1 hole together
- Tie pin 24 & pin 2 hole together
- Tie pin 2 & pin 24 hole together
- Tie pin 22 & pin 31 hole together
This came from a forum and I've seen it a couple places online. The second method comes straight from the NA ezine. It is a little different. I've tried it once and still nothing. It is as follows:
PRG wiring: bend up pins 1,2,24,30,31
Connect pin 2 to hole 24
connect pin 24 to pin 16
connect pin 30 to hole 1
pins 1 & 31 remain unconnected.
CHR wiring: bend up pins 1,2,22,24,30,31
connect pin 2 to hole 24
connect pin 22 to hole 31
connect pin 24 to hole 2
connect pin 30 to hole 1
pins 1 & 31 unconnected.
Any advice on which to use would be greatly appreciated. Thanks