Main components

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Part NumberDescription
L7805Positive 1.5A 35V Linear Regulator, Fixed Output 5V, TO-220/TO-263/TO-252
74HC32Quad 2-input OR
74HC86Quad 2-input XOR
74HC08Quad And2
74HC257Quad 2 to 1 Multiplexer
74HC04
KM62256CLP32Kx8 bit Low Power CMOS Static RAM, 55/70ns, DIP-28
74HC00quad 2-input NAND gate
74HC1383-to-8 line decoder/multiplexer inverting, DIP-16/SOIC-16/SSOP-16
74HC245Octal BUS Transceivers, 3-State outputs
74HC1734-bit D-type Register, 3 state out
74HC139Dual Decoder 1 of 4, Active low outputs
74HC161Synchronous 4-bit programmable binary Counter
CC56-12SURKWA4 digit 7 segment hyper red LED, common cathode
27C256OTP EPROM 256 KiBit
LM556Dual Timer, DIP-14/SOIC-14

BRISC8 schematic

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BRISC8 board layout

BRISC8 PCB render

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Bottom PCB