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 …
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The 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! …
Read MoreHeathkit GC-1000 Most Accurate Enigma
Restoring, repairing, and improving the performance of a Heathkit GC-1000 Most Accurate Clock. This clock uses the WWV broadcast signal to automatically set the time.
Read MoreTandy Color Computer Resources
This page is where I’m going to briefly collect all my Coco-2 thoughts. Starting with my videos on the subject, Some history The Coco-2 was the first computer I ever owned. Not necessarily the first one I ever used — that was either the IBM PC 5150, or the Convergent, or probably some 8-bit Atari …
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