Okay, so I am very close to having my TSROM cart working. I have some problems that I am just confused regarding the wiring (once again).
So basically the cart turns on and I hear sound, but the graphics are scrambled (so CHR wiring issue there) but then after a short time the game freezes up. So I'm guessing I have an issue with both the CHR and PRG wiring.
The game is a TSROM MMC3 cart, and I have used the cutting traces method. Both of my EPROM chips were burned correctly and verified, and my ROM was split properly (I've done this before and had several carts work). I searched the forums extensively, but have still not found my solution.
Here are the TSROM instructions (I have used CUT traces):
For the PRG, I have made all of the connections except for the one that says to solder pin 30 to hole 1. Since I didn't cut any trace for hole 1, what am I supposed to do with these points? Still solder them together?
For the CHR I have the same problem, what am I supposed to do with pin 30, since there is no actual HOLE 1?
I should note that I soldered pins 31 and 32 together on the PRG chip and thats when I started getting sound, except the game freezes after a short time.
Also, I can't find any data on what CHR /RD means.
Thanks very much!
-B
So basically the cart turns on and I hear sound, but the graphics are scrambled (so CHR wiring issue there) but then after a short time the game freezes up. So I'm guessing I have an issue with both the CHR and PRG wiring.
The game is a TSROM MMC3 cart, and I have used the cutting traces method. Both of my EPROM chips were burned correctly and verified, and my ROM was split properly (I've done this before and had several carts work). I searched the forums extensively, but have still not found my solution.
Here are the TSROM instructions (I have used CUT traces):
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)
For the PRG, I have made all of the connections except for the one that says to solder pin 30 to hole 1. Since I didn't cut any trace for hole 1, what am I supposed to do with these points? Still solder them together?
For the CHR I have the same problem, what am I supposed to do with pin 30, since there is no actual HOLE 1?
I should note that I soldered pins 31 and 32 together on the PRG chip and thats when I started getting sound, except the game freezes after a short time.
Also, I can't find any data on what CHR /RD means.
Thanks very much!
-B