Designing an 8 megabyte RAM board for the Heathkit H8 Vintage Computer, using memory paging to map the 8MB memory space into 64KB of CPU address space. Uses AS6C4008 RAM chips or 39SF040 flash chips. Includes Ramdisk driver for Heathkit HDOS.
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Designing a DRAM board for the Heathkit H8 Computer using the Intel D8203 DRAM controller
I develop my first DRAM project, a DRAM memory board for the Heathkit H8 computer, using the Intel D8203 DRAM controller IC.
Read MoreBlinkenlights for the Heathkit H8 Computer
Blinkenlights board for the Heathkit H8 computer, also a convenient place to connect logic analyzer probes to the H8.
Read MoreAn 8085 CPU Board for the Heathkit H8 Computer
An 8085 CPU Board for the Heathkit H8 Computer, with Schematics, Gerbers, and Design information.
Read MoreNo Vinculum? No problem a pi-based Vinculum emulator for my Heathkit H8 computer
Emulating a Vinculum VDIP1 IC using a raspberry pi, to communicate with a Heathkit H8 Computer.
Read MoreSpeech Synthesizer for the Heathkit H8 Computer
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 …
Read MoreThe Trump Card: Zilog Z8000 Coprocessor card for the IBM PC
The Trump Card is a Zilog Z8000 coprocessor/accelerator card for the IBM PC 5150 and clones, detailed by a Steve Ciarcia article in 1984
Read MoreScott’s Zilog Z8000 CP/M-8000 Clover Computer
DIY Zilog Z8000 computer that runs CP/M-8000 with 1MB flash, 1MB RAM, and a couple serial ports.
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