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wire job for rolling thunder (rambo pcb) for Xybots?
Posted: Thu Jan 28, 2010 10:26 am
by nintendo2600
Hey,
I was wondering if anyone has the schematic for the wire job needed when turning the rolling thunder version of the the tengen "rambo" pcb into a suitable board for use with the xybots proto please.
Thanks!!
Posted: Tue Feb 02, 2010 9:08 am
by nintendo2600
no love?
Posted: Tue Feb 02, 2010 1:30 pm
by Memblers
Prototypes are by definition unique. If you're sure it's "just another mapper #x" game, then all you need is the pinout of the Tengen MaskROM.
Posted: Mon Feb 08, 2010 7:35 am
by nintendo2600
Memblers wrote:Prototypes are by definition unique. If you're sure it's "just another mapper #x" game, then all you need is the pinout of the Tengen MaskROM.
I have no clue, all I know is that Skull & Crossbones is a proper donor for standard eprom modification use and the Rolling Thunder can also be used BUT it needs more address lines rewired.
Rolling Thunder seems to be a more involved PCB with extra logic on the board compaired to Skull & Crossbones so I assume, but don't know how, to circumvent this additional logic.
Anyhow, I have no clue currently how to make this and I would like to know how if someone with the info would kindly share it please.
Posted: Mon Feb 08, 2010 12:11 pm
by coinheaven
yea use skull and crossbones. straight solder in a 27c512 chip for the CHR and wire the PRG like a TLROM. thats it, pretty simple
Posted: Mon Feb 08, 2010 2:24 pm
by nintendo2600
coinheaven wrote:yea use skull and crossbones. straight solder in a 27c512 chip for the CHR and wire the PRG like a TLROM. thats it, pretty simple
OK will do. Was just trying to have more options as I come across Rolling Thunder alot more than Skull & Crossbones locally. Thanks for the info for sure. I'll just grab Skull & Crossbones off ebay
