Hardware : Z80A @ 3.579545 MHz
Sound Chip : SN76489 @ 3.579545 MHz (PSG sound)
Graphics Chip : TMS9928 @ 3.57954 MHz
Other System Information;
8255 for I/O port work
3 Eproms for program and graphics
TMM2064 for program RAM
8 8118 dynamic RAMs for the graphics
74LS139 and 74LS32 for logic gating
ULN2003 for coin counter output
7808 voltage regulator to a transistorized circuit for TV output
secondary crystal, numbers unknown for the TMS9928
Notes : Hardware is based on Sega's SG-1000 console
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