I have set a goal to build an x86, Z-80, and 6502 based single board computers just to mess around with and program them in machine code. After working at the

I have set a goal to build an x86, Z-80, and 6502 based single board computers just to mess around with and program them in machine code. After working at the 6502 one for awhile I can start to understand why the Homebrew Computer Club was an obsession for many.