UNROM to UOROM
Bend up eprom pins 1, 2, 24, 30, 31, and 32.
Bend up MC74HC32 pin 3.Can be left as is.
Solder pin 1 and 24 to hole 14.
Solder pin 2 to hole 22.
Solder pin 30 to MC74HC32 pin 3.
Solder pin 32 to hole 28.
I got this from looking at tokumaru pic of his uorom test cart. Worked for me.
Edit... some games wouldn't work in cart if 24 wasn't grounded.
Bend up eprom pins 1, 2, 24, 30, 31, and 32.
Bend up MC74HC32 pin 3.Can be left as is.
Solder pin 1 and 24 to hole 14.
Solder pin 2 to hole 22.
Solder pin 30 to MC74HC32 pin 3.
Solder pin 32 to hole 28.
I got this from looking at tokumaru pic of his uorom test cart. Worked for me.
Edit... some games wouldn't work in cart if 24 wasn't grounded.