2 layers245.1 × 160 mm
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.
139 parts326
Boards using the 74HC574D
66 boardsBoards in 33 GitHub repositories, designed in KiCad, that use the 74HC574D by MDD (-40℃~+125℃ 1 13ns 15ns@6V,50pF 2.7V~6V 20uA 28MHz 5ns 6.5pF 7.8mA 7.8mA 74HC Series 8 D-Type Enable Rising Edge Tri-State SOP-20L Flip Flops ROHS). See how each wires it, with its parts, size, README and files; the 74HC574D’s symbol, footprint and pinout are on its own page.
- 2 layers306.1 × 130.2 mm
8-Bit CPU 32k
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
132 parts94 - 4 layers76.7 × 76.7 mm
- 2 layers177.8 × 130.8 mm
- 2 layers208 × 110 mm
- 2 layers88.9 × 88.9 mm
- 2 layers
BreadBin
c0pperdragon/BreadBin
A CPU made of 7400 logic on breadboards - inside a bread bin ;-)
45 parts18 - 2 layers133 × 82 mm
HD6309 computer
trcwm/HD6309-Computer
A computer based on the HD6309 CPU, done for the Retro Challenge 2017/04.
52 parts17 - 2 layers99.7 × 49.5 mm
- 4 layers220 × 170 mm
Arpeggiator
EwoudVV/arpeggiator
12-note analog arpeggiator with a 1/2/3 octave range, custom pcb and printed case
360 parts3 - 2 layers284.9 × 96.5 mm
- 4 layers304.5 × 217.2 mm
Latest Full Backplane
Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips
478 parts2 - 2 layers299.7 × 198.1 mm
Cisc-8
nailed-barnacle/Cisc-8-ttl-processor
A cut-down version of the 8080 processor using HCTTL and including a discrete ALU and instruction decoder
319 parts1MIT - 2 layers170.2 × 170.2 mm
- 4 layers188 × 128.3 mm
- 2 layers213.1 × 129 mm
- 2 layers110 × 110 mm
Custom cpu
axelo/custom-cpu
Cutom CPU built from 7400-series integrated circuits (and FLASH roms)
47 partsMIT - 2 layers142.2 × 99.1 mm
- 2 layers180 × 67.5 mm
- 2 layers56 × 49.5 mm
Gb devcart
fabPlane/gb-devcart
A simple, original Game Boy (DMG) / ModRetro Chromatic homebrew development cartridge. 512 KB of rewritable NOR flash, 8 KB of battery-free F-RAM, and an MBC5-subset mapper built from discrete 74HC logic.
26 parts - 2 layers200 × 150 mm
- 2 layers234 × 100 mm
V2b
KITTY-6502/hardware
the KITTY is a 65c02 homebrew kit microcomputer designed around text mode graphics and cartridge media. It is fully open source, and uses exclusively in-production parts.
147 parts - 2 layers99.1 × 99.1 mm
Vga
rjw57/simplest-80s-computer
This is my rough scratch repo where I keep experiments to do with desiging 80s computer peripherals. It is not in any sensible shape to be used by others yet, apologies.
45 parts - 2 layers204.5 × 66 mm
