Custom Microcode Compiler, Made In Google Sheets

When homebrewing a CPU, one has to deal with microcode. Microcode is the low-level nuts and bolts of how, precisely, a CPU executes instructions (like opcodes) and performs functions such as updati…

Homebrew Network Card With No CPU

A modern normal network card will have onboard an Ethernet controller which, of course, is a pre-programmed microcontroller. Not only does it do the things required to keep a computer on the networ…

Only 8 Chips Make A CPU

We’re no stranger to homemade CPUs on these pages, but we think that [Jiri Stepanovsky]’s 16-bit serial CPU might be a little special. Why? It has an astonishingly low chip count, with …

Homebrew 16 Bit Computer Reinvents All The Wheels

Building your own computer has many possible paths. One can fabricate their own Z80 or Motorola 6502 computers and then run a period correct OS. Or a person could start from scratch as [James Stane…