The STEPLA-1 8-bit hardwired CPU using 74 series logic (opens in new tab)

STEPLA-1 by Ahmad is a fully functional 8-bit CPU under an open MIT license. Every component; registers, decoders, ALU, control unit is built from individual 74-series logic gates. There are no black box components and every signal path is visible, traceable, and documented. Unlike EEPROM-based designs, STEPLA-1 uses a fully hardwired control unit a gate-level […]