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Blasto 1978 Gremlin
PC board dated 1976
8080 cpu 2.077 mhz
20.77 main osc


2 2144-s pgm
6 2102's
6m,7m,8m,9m pgm 

power conn

-12  +12  -  gnd  gnd  gnd  -  +5  +5  +5
50                                     41  pin

vid - - gnd
55       58

32 * 28 grid of objs

only 6 bits of screen memory used, 2 bits tied low