René's URL Explorer Experiment


Title: Rob's Retro-Computing Archive

Description: This site focusses on retro-computing and its related history from the 1970's and 1980's from the direct experience of its curator, with personal articles written about Z80 computing, the CP/M operating system, music synthesizers and hardware/software development (including schematics for the projects).

Mail addresses
RetroComputingArchive@gmail.com

direct link

Domain: rcl9.github.io

Links:

GitHubhttps://github.com/rcl9
Imagery of Past Projectshttps://github.com/rcl9/Imagery-of-Past-Projects
Where and How Did it all Start?https://github.com/rcl9/Imagery-of-Past-Projects/blob/main/Where%20It%20All%20Started/Readme.md
New H19/VT52 firmware support for the Multiflex Video Display Terminal Kit of the 1982 era (3 ROM images)https://github.com/rcl9/MultiFlex-Z80-H19-Terminal-Emulation-ROMs
The 'Colossus Control Computer' -- A Beast of a Z80 Machine!https://github.com/rcl9/Colossus_Control_Computer
'Drum Pad Triggering System' for MIDI Usage - 1985https://github.com/rcl9/MIDI_Drum_Pad_Triggers
Cypher Z80/68000 Single Board Computer (of the 1984 era)https://github.com/rcl9/Cypher-Z80-68000-Single-Board-Computer-1984-by-Motel-Computers---History-and-Documentation
A new 'MacGyver Inspired' Support Structure for the Cypher Z80-68000 Single Board Computer - 2026https://github.com/rcl9/MacGyver-Inspired-Support-Structure-For-The-Cypher-Z80-68000-SBC
Motel Computers Cypher Z80/68000 SBChttps://github.com/rcl9/Cypher-Z80-68000-Single-Board-Computer-1984-by-Motel-Computers---History-and-Documentation
Parallel I/O, SASI Controller and R-Bus Interfaces Expansion Board for the Cypher Z80/68k SBChttps://github.com/rcl9/Cypher-Z80-68000-Single-Board-Computer----Expansion-Board
Port Organizer and Break-Out Box Add-On for the Cypher Z80/68000 SBC (1985-era)https://github.com/rcl9/Cypher-Z80-68000-Single-Board-Computer----Port-Organizer-Add-On
EmuProm -- A Universal EPROM Emulator for 2716, 2732, 2764, 27128 and 27256https://github.com/rcl9/EmuProm--Universal-EPROM-Emulator
OMNI-Prom Universal Programmerhttps://github.com/rcl9/OMNI-Prom-Programmer
ZAP-A-PAL Programmer - A Variation on a 1987-era PAL Programmerhttps://github.com/rcl9/ZAP-A-PAL-Programmer
How to Boot CP/M-3 from the HxC Floppy Emulator on the Cypher Z80/68000 SBChttps://github.com/rcl9/Cypher-Z80-68000-Single-Board-Computer---Running-CPM-3-via-the-HxC-Floppy-Emulator
Morrow DISK JOCKEY 2D CP/M 2.2 "SYSGEN" Recompile From Source Files (For Exidy Sorcerer)https://github.com/rcl9/Morrow-DJ2D-CPM-22-Recompile-From-Source
Integration of the 1983-era DRC 'Light Speed 100 RAMdisk' S-100 board with the Exidy Sorcerer + CP/M 2.2https://github.com/rcl9/Integration-of-the-1983-DRC-Light-Speed-100-RAMdisk-S100-Board-With-Exidy-Sorcerer-CPM-2.2
How To Archive Old Computer Data Tapes Using Tapetool2 (for the Exidy Sorcerer)https://github.com/rcl9/How_To_Archive_Old_Computer_Data_Tapes_Using_Tapetool2
TapeTool2https://www.toptensoftware.com/tapetool
Hex File Overlayer Utility for CP/M 2.2 SYSGEN Image Fileshttps://github.com/rcl9/Hex-File-Overlayer-of-CPM-Sysgen-Image
associated repositoryhttps://github.com/rcl9/Morrow-DJ2D-CPM-22-Recompile-From-Source
How to Modernize the Exidy Sorcerer's Linear Power Supplyhttps://github.com/rcl9/Exidy-Sorcerer-New-Power-Supply
Resurrecting and Rebuilding 'Sorcerer Space Invaders' from 1980 (BASEX Language)https://github.com/rcl9/Resurrecting-and-Rebuilding-Sorcerer-Space-Invaders-from-1980--BASEX-
How to Speed up the Exidy Sorcerer I from 2Mhz to 3.16Mhzhttps://github.com/rcl9/Exidy-Sorcerer-Hardware-Speedup-Modification
Port FE - Sorcerers Users' Group (Toronto) Newsletter - March 1980 to December 1982https://github.com/rcl9/Port-FE--Sorcerers-Users-Group-Newsletter-Toronto
History of 8080-Z80 BASEX Compiler from the 1979 Erahttps://github.com/rcl9/History-Of-The-BASEX-Compiler-from-the-1979-Era
Grades 9-12 Educational Math Programs for the Commodore PET - Written by RCL9 in 1982https://github.com/rcl9/Commodore-PET-Computer-Educational-Software-From-1982
A Potted History of "Canada Remote Systems" (aka Mississauga & Toronto RCP/M) of the 1980shttps://github.com/rcl9/Canada-Remote-Systems-and-RCPM--A-Potted-History
Memory Cartridges for the Roland JX8P Synthesizer (from 1985)https://github.com/rcl9/Roland-JX8P-Synthesizer-Memory-Cartridges
Roland JX8P Synthesizer Patch Collectionhttps://github.com/rcl9/Roland-JX8P-Synthesizer-Patch-Collection

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