An 8085 CPU Board for the Heathkit H8 Computer, with Schematics, Gerbers, and Design information.
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No 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.
Read MoreA new calibrator and a new amplifier for an old Drake
Drake R-4C crystal calibrator, sherwood-style amplifier, and other modifications
Read MoreRaspberry Pi Based DDS-VFO For Drake 4-Line Twins
A DDS-VFO digital synthesizer for Drake 4-Line Twins (T-4XC, R-4B, R-4C, etc). Powered by a raspberry pi. Uses alphanumeric display and rotary encoder.
Read MoreAdding a panadapter to a Drake R-4B Ham Radio Receiver
In this post, I add a panadapter to my Drake R-4B. Background In late 2021, I decided to become a Ham Radio operator. This involved passing a couple of tests — my technician and my general exam. It took a little bit of study, and soon being an amateur radio operator was within my grasp! …
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