Johnny's home-built CPU corner (and other stuff, maybe)
8080 CPU, built using 74HC-logic
March 01, 2018
It's done!
I now have a fully functional CPU hardware emulator that runs at 2 MHz, can execute all opcodes and also feature interrupt logic/functionality.
Top left are the CONTROL section.
To the right we have two sections, REGISTERS at top right and in front the ALU.
To the left I have attached a BUS system I call XBUS. On it there are a 64K SRAM and a memory editor that via RS232 can edit the SRAM. That pcb has been named RatNest.
The breadboard are a small testbed for the IN and OUT opcodes.
I will update these pages with more details as time permits.
Homebuilt CPUs WebRing
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Note: The ring is chartered for projects that include a home-built CPU. It can emulate a commercial part, that′s OK.
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It can be built using any technology you like, from relays to FPGAs.