Graphic Dump looks like a Space Invaders game
Big graphic showed DARTH VADER
Board is labeled SI-7811M-2
6 2708 Eproms, Last socket had no 2708 in it - missing EPROM?

one.bmp and two.bmp are graphic dumps

was informed that old.3 was a bad dump, so I re-read it
old.3a is the new read
old.3 looks like data bit 7 was stuck high, or not connteced, on the first read