
8-Bit CPU 32k
slu4coder/Minimal-64x4-Home-Computer
My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.
Open-source boards designed in KiCad by slu4coder on GitHub, from 6 repositories. A board’s address here is its repository’s there.

slu4coder/Minimal-64x4-Home-Computer
My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.

slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed

slu4coder/Minimal-64-Home-Computer
Legacy: Full TTL-only home computer with VGA and PS/2 and twice the processing power of a Commodore 64

slu4coder/Minimal-Terminal
UPDATE 2026: Minimal UART Terminal with 50 x 30 characters VGA output and PS/2 keyboard

slu4coder/Minimal-UART-Computer-3
Version 3 of my educational DIY TTL computer built around a UART serial interface - now with blinkenlights!

slu4coder/Arduino-Nano-PC
1 Arduino Nano + 1 Logic Chip = Personal Computer with VGA and PS/2

slu4coder/Minimal-64x4-Home-Computer
My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.
/Revision%201.3%20(FLASH%20Edition)/KiCAD/8-Bit%20CPU%2032k.kicad_pcb.jpg?size=s&soon)
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed
/Revision%201.5%20(Expanded)/KiCAD/8-Bit%20CPU%2032k.kicad_pcb.jpg?size=s&soon)
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed
/Revision%202.0/KiCAD/8-Bit%20CPU%2032k.kicad_pcb.jpg?size=s&soon)
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed
/Expansions/VGA%20Card/KiCAD/VideoRAM.kicad_pcb.jpg?size=s&soon)
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed

slu4coder/Arduino-Nano-PC
1 Arduino Nano + 1 Logic Chip = Personal Computer with VGA and PS/2
/ArduinoPC.kicad_pcb.jpg?size=s&soon)
slu4coder/Arduino-Nano-PC
1 Arduino Nano + 1 Logic Chip = Personal Computer with VGA and PS/2
/ArduinoPC.kicad_pcb.jpg?size=s&soon)
slu4coder/Arduino-Nano-PC
1 Arduino Nano + 1 Logic Chip = Personal Computer with VGA and PS/2