Hi! I'm new here.
I recently acquired a Galaga Cabinet, that after some simple repairs, works great.
I found a Gaplus PCB that I'd like to install. It plays fine, but the Gaplus title screen is somewhat corrupt with red lines in the background. I erased and reburned all 12 2764 EPROMs, but the title screen is still corrupt. So far this is the only corruption I have found.
I'm suspecting RAM or bad PROM, but figured I'd ask you guys.
Also, I am aware that Midway released a ROM upgrade to change the title screen to Galaga 3 instead of Gaplus. Is anyone familiar on which ROM's need to be swapped for this change? Does anyone have dumps of those upgrade ROMS?
I'm hoping the solution to these questions doesn't require new PROM's, as all I have is a willem programmer, and I do not believe I can burn new PROMS with it. Only EPROMS.
Thanks!
I recently acquired a Galaga Cabinet, that after some simple repairs, works great.
I found a Gaplus PCB that I'd like to install. It plays fine, but the Gaplus title screen is somewhat corrupt with red lines in the background. I erased and reburned all 12 2764 EPROMs, but the title screen is still corrupt. So far this is the only corruption I have found.
I'm suspecting RAM or bad PROM, but figured I'd ask you guys.
Also, I am aware that Midway released a ROM upgrade to change the title screen to Galaga 3 instead of Gaplus. Is anyone familiar on which ROM's need to be swapped for this change? Does anyone have dumps of those upgrade ROMS?
I'm hoping the solution to these questions doesn't require new PROM's, as all I have is a willem programmer, and I do not believe I can burn new PROMS with it. Only EPROMS.
Thanks!
