Blog post list

I develop my first DRAM project, a DRAM memory board for the Heathkit H8 computer, using the Intel D8203 DRAM controller IC.

An 8085 CPU Board for the Heathkit H8 Computer, with Schematics, Gerbers, and Design information.

In this video, I try out a newly-received H8 computer and build a speech synthesizer for it using the SP0256A-AL2 IC: My new H8 Computer A fellow member of SEBHC, Glenn, hooked me up with a good deal on an H8 starter system. It was actually exactly what I was looking for — an H8 …

DIY Zilog Z8000 computer that runs CP/M-8000 with 1MB flash, 1MB RAM, and a couple serial ports.