
A500 Simple SPI V1.3
Mathesar/a500-simple-spi-hardware
Simple SPI controller for Amiga 500 with support for SD-cards and Ethernet controller
Boards in 4 GitHub repositories, designed in KiCad, that use the 74LVC32AD by Nexperia (-40℃~+125℃ 1.2V~3.6V 1.7V~2V 2 24mA 24mA 3.8ns@3.3V,50pF 4 40uA 700mV~800mV 74LVC Series OR Gate SOP-14 Logic Gates ROHS). See how each wires it, with its parts, size, README and files; the 74LVC32AD’s symbol, footprint and pinout are on its own page.

Mathesar/a500-simple-spi-hardware
Simple SPI controller for Amiga 500 with support for SD-cards and Ethernet controller




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).