Sky Base (mod)

1x MOSTEK MK3880N-Z80CPU (main)
1x unmarked oscillator
various circuitry for analogical sound

2x D2732C (1,2)
3x HN462532G (3top,4,7)
3x TMS2532 (3bottom,5,6)
1x PROM6331
1x PROM74S287

1 22x2 edge connector
1x 6x2 dip switches
1x trimmer (volume)
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The board is heavily modified with wires, bent pins, and the like.