![]() ![]() – boards as they were printed without all the necessary parts for the CS NOT and WE functions of the CMOS on the MPU itself IC1 reimplements these missing components. All parts in the schematic inside the dashed line pattern are physically located on the daughterboard itself. This board is cited in the Stargate Drawing Set as IC1, if you look around by the 6514 CMOS part IC1 will be enclosed in a dashed line pattern. The early Stargate MPUs had an additional daughterboard that plugged into a socket at chip location 6D with 2 jumper wires spanning from it. I’m assuming they stopped when they couldn’t get past the “open coin door” screen. ![]() In fact all the boards in this Sinistar set had different serial numbers, so it was cobbled together.īoard was previously modified with BS.BA inversion hack (like seen on Rev. I’ll have to ping a serial expert.ĮDIT: I dug out that Ken Graham seminar video and he confirmed all Sinistars came with Rev. This was the first game I tested and it became quite apparent to me that every ROM and input board would need new ribbon cables, which I had just run out of and needed to order more. They shipped this with the metal plate you bolt the boards into, they said for safety, and it’s a good thing because I forgot Sinistar’s ROM and input boards had different mounting holes from the other games. Here’s an array of problems I’ve encountered fixing Defender/Stargate hardware for people. ![]()
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