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rcl9/README.md

Welcome to Rob's 1970's and 1980's Retro Computing Archive.

Please visit the main landing page which has a short visual and textual overview of each repository and why it may be of interest to you.

During the late 1970's and 1980's I was a hard-core, low-level, prolific software and hardware developer, a "builder of everything". This GitHub site will strive, amoung other goals, to bring some of those projects back to life in a documented and open source manner. Fortunately I had documented, archived and stored away most of those projects at the time for future historical recollection.

Generally speaking, the documentation will primarily be of interest to Z-80 and CP/M-80 people, along with some other projects relating to digital music + MIDI synthesis machines and peripheral hardware pinned to the 1980s. A focus will also be made to document some machines for future historical reference.

The following photo albums contain snapshots of some of my more interesting projects from the 1970's to late 1980's of which a subset are documented in the GitHub repos:

You can reach me at RetroComputingArchive@gmail.com. I do not have a YouTube channel nor a dedicated Web site for my retro computing work.

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  1. MultiFlex-Z80-H19-Terminal-Emulation-ROMs MultiFlex-Z80-H19-Terminal-Emulation-ROMs Public

    This project documents the 3 new ROMs for the Exceltronix Multiflex Z80 terminal board of the 1982-era. These provide for updated and new Heathkit H-19/VT52 terminal emulation support.

    Assembly

  2. Cypher-Z80-68000-Single-Board-Computer-1984-by-Motel-Computers---History-and-Documentation Cypher-Z80-68000-Single-Board-Computer-1984-by-Motel-Computers---History-and-Documentation Public

    This repository strives to provide a historical snapshot, archive and description of the short lived Cypher Z80/68000 single board computer which was designed, built and sold by Motel Computers of …

  3. Colossus_Control_Computer Colossus_Control_Computer Public

    The 'Colossus Control Computer' of 1985 and its various sub-projects

    Assembly

  4. MIDI_Drum_Pad_Triggers MIDI_Drum_Pad_Triggers Public

    A 'Drum Pad Triggering System' for MIDI Usage - 1985

  5. Roland-JX8P-Synthesizer-Memory-Cartridges Roland-JX8P-Synthesizer-Memory-Cartridges Public

    Two hardware designs for Roland JX8P memory cartridges with 256 patches in 8K.

    C++

  6. Imagery-of-Past-Projects Imagery-of-Past-Projects Public

    This repository contains a snapshot of some of my more interesting projects from the 1970's to late 1980's which I had built from scratch (but just a small fraction of my total projects).