I left the project in the previous post running as a Z80 NOP test circuit; a minimal circuit for running a Z80 with no memory or I/O. The next step is to start fleshing out the board by adding an EEPROM. Bill of Materials In addition to the parts used in Part 1: 1 x 27C512 EEPROM (I used a Winbond W27C512-45 part) 1 x Minipro TL866II Eprom programmer (available from Amazon for around £40) …
Designing and building my own 8-bit retro computer has been an ambition I’ve harboured for a few years now. I’ve studied and repaired a handful of computers of that era, and feel fairly comfortable with my electronics skills, yet have always considered designing a full system to be beyond the ken of normal folk. After successfully building a Harlequin 128K, and chatting online to @6502Nerd, who has built his own homebrew computer based upon the …
