Main components

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Part NumberDescription
74LS08Quad And2
28C256Paged Parallel EEPROM 256Kb (32K x 8), DIP-28/SOIC-28
WD65C816SWestern Digital Design Center W65C816 CPU - 16bit CPU
W65C51NW65C51N ACIA
74LS32Quad 2-input OR
74HC14Hex inverter schmitt trigger
74HC74Dual D Flip-flop, Set & Reset
74126
74LS10
74HC00quad 2-input NAND gate
MCP1792x-3302xDBLow Quiescent Current LDO Regulator, 4.5-55V input, 3.3V, 100mA, SOT-223
74HC1383-to-8 line decoder/multiplexer inverting, DIP-16/SOIC-16/SSOP-16
HM62256BLP32,768-word × 8-bit High Speed CMOS Static RAM, 70ns, DIP-28
74HC688
74HC04Hex Inverter
74HC245
74LS21Dual 4-input AND
74HC373

main schematic

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main board layout

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