
ISA FPGA v2
robfinch/Cores
Cores ===== RTF's Cores Use at your own risk. Welcome to my galaxy of cores. Contained in the directories are IP cores, source code for digital circuits.
Boards in 16 GitHub repositories, designed in KiCad, that use the 74LVC138AD by Nexperia (- Signal Switches, Multiplexers, Decoders ROHS). See how each wires it, with its parts, size, README and files; the 74LVC138AD’s symbol, footprint and pinout are on its own page.

robfinch/Cores
Cores ===== RTF's Cores Use at your own risk. Welcome to my galaxy of cores. Contained in the directories are IP cores, source code for digital circuits.



fachat/csa_ultracpu
The CPU board for a 17MHz Colour-PET clone with modern interfaces






robfinch/Cores
Cores ===== RTF's Cores Use at your own risk. Welcome to my galaxy of cores. Contained in the directories are IP cores, source code for digital circuits.

robfinch/Cores
Cores ===== RTF's Cores Use at your own risk. Welcome to my galaxy of cores. Contained in the directories are IP cores, source code for digital circuits.





strickyak/tfr9
The TFR/9 Single Board Computer for Hitachi 6309E or Motorola 6809E CPUs (TFR/901)



roberto314/Unicomp2
A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

roberto314/Unicomp2
A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

roberto314/Unicomp2
A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

roberto314/Unicomp2
A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

roberto314/Unicomp3
A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

timex-sinclair-projects/tspico-hardware
Status 2026-10-19: prototype 3 (v3.0-proto3, changes below). Proto1 (v3.0-proto1) was built and brought up; proto2 added its fixes (below).