The Williams system 7 boardset was replaced in 1984 with the system 9 boardset, and then again in 1985 with the system 11 boardset. Combining the driver board, sound board, and cpu directly onto one board eliminated several design deficiencies of the earlier 3-7 boardsets; mainly the 40 pin interconnector, and extra wiring harness interboard connectors.The power supply board in that Barracora had a terrible soldering job done so it's entirely possible it shorted and sent voltage where it's not supposed to go on the MPU. Tried this MPU in a Black Knight and got nothing out of it. Sold for parts or repair, AS IS. $150 shipped to the lower 48.
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20 Facts about the Black Knight Satellite. The Black Knight wiki. This "Artificial Satellite" has caused major media interest since the late 50′s, and it has become one of the most talked about objects in space. First thought to be an Russian spy satellite, the Black Knight satellite has gripped the interest of millions worldwide.