Old Computer Systems
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Introduction
This is the story of my continuing attempt to bring to life the old
computer systems that I have saved from land fills everywhere. I find
the older machines far easier to understand and work on than the new
ones - but I work on and use the new ones as well.
Restoration
This is an explaination of how I attempt to restore the old systems.
Restoration of old systems
Tools
This is a collection of Tools, Monitors, Drivers, Disk Images,
Disassemblies, and Documentation I have built or acquired over the
years.
(Use the Intel Tools Below)Bill's Old Tool Chain Tools
Intel Tool Chain Tools
Intel 8080/85 ROMs and
Tools
Monitors
Drivers
Operating Systems
ISIS-II Operating
Systems, Programming Languages, and Utilities Disk Images
ISIS-II Operating Systems,
Programming
Languages, and Utilities Disassemblies
IC Documentation
Intel Product Manuals
Intel Computer Systems
This covers the Intel OEM Single Board Computers which I have running
the CP/M-80 Operating System. These machines will not run ISIS-II.
They are Multibus-I systems.
Intel Systems
Intel MDS Systems
This covers the Intel Microcomputer Development Systems (MDS) Series
I-IV. These machines all run the ISIS-II operating system. They are
Multibus-I systems.
ISIS/MDS Systems
Intel and Other Multibus Systems
Multibus Systems
S-100 Bus Systems
I began dealing with the S-100 Systems in 1978. I still have my first
S-100 System and it still operates.
S-100 Systems
IBM PC Systems
I began with the IBM PCs as soon as the first clone board (MPX-16)
came to market in 1982. I have fiddled with them off and on for
the last 35 years.
IBM PCs
Software for the Old Systems
This page contains links to the old software that has been found and
runs on the CP/M-80 and ISIS-II Operating Systems. This includes the
Operating Systems and the user software.
Old Software
Common Disk Subsystems, Formats, Standards, Repair and Geometry
Disk Subsystems
Formats, Standards and Geometry
Fix for 8-Inch Door Latches
Test Equipment and Miscellaneous
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Test Equipment and Adapters
HP-1650B Logic Analyzer
8080 Probe for HP-1650B
8085 Probe for HP-1650B
8086 Probe for HP-1650B
P796 Probe for HP-1650B
3.5 and 5.25 Inch Disk Probe for HP-1650B
Agilent manuals and software for the HP 1650A/B series of Logic Analyzers:
HP-1650A
HP-1650B
HP-10391B Disassembler SDK
HP-1650A/B Test Cables
LIF Tools for HP Test Equipment
LIF Utilities for Linux
LIF Utilities for DOS (Not Windows!)
Making Disks
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Last Updated: 30 July 2025