Vintage Technology Projects by System
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Fun with the Applesauce Floppy Drive Controller
The Applesauce floppy drive controller was invented by John K. Morris. Applesauce combined with the new .woz disk image format for emulators is a major
Add NZ-COM, ZSDOS and Clock Card Support to PCPI Applicard (Part 2)
This is a continuation from my previous article that gets CP/M booting on the CFFA 3000 and PCPI Applicard. The goal of this article is
Bootable CP/M System on the CFFA3000 Compact Flash HD for the PCPI Applicard and Apple II (Part 1)
Background: The CFFA 3000 was developed by Richard Dreher and is an absolutely fantastic piece of hardware. It acts as a hard drive for the Apple
Gemini Board PC Emulator for the Z-100
Gemini Board: Photo courtesy of Steven Vagts of Z-100 LifeLine The Gemini Board was a PC emulator circuit board designed to plug into the Z-100
Z-100 Fan Replacement
All of this noise from such a little fan. The stock fan inside of the Z-100 power supply is a 12 volt Panasonic Panaflo FBP-08B12H
The Definitive Z-100 Software Archive
After months of 19.2K and 38.4k serial data transfers, I now present to you a Z-100 software and manual archive like no other on the
High Speed Imp v2.46
With my collection of CP/M systems growing, I decided to make my high speed version of IMP platform independent. I’ve removed the hardware-specific code from
Serial Port Interfacing to the Z-100 – Part 2 (CP/M 2.2)
Establishing a serial link in CP/M 2.2 was a little bit more challenging than on the ZDOS side of things. There were no CP/M terminal
Serial Port Interfacing to the Z-100 – Part 1 (ZDOS/MS-DOS)
Sleep! Serial Port Interfacing in ZDOS With a fully functional Z-100, the next step was to configure one of the Z-100’s serial ports to
Z80Pack CP/M Emulator and NZ-COM
Z80Pack by Udo Munk is a great CP/M emulator. It will emulate a number of hardware architectures including the Altair and IMSAI systems, but I primarily
Repairing an 8″ Floppy Drive
When I first powered up the Z-100 for testing, everything worked except one of the 8″ disk drives, a Tandon TM848-1E. The drive light would
Advent Turbo Rom
Transferring files one a time was getting a little tedious. The Kermit terminal program (there is actually a Kaypro version of Kermit) and QTerm, which also supports
Dynaco ST-70 Vacuum Tube Stereo Amplifier
What vintage technology site would be complete without at least one vacuum tube project! My college engineering experience was during the 1990s and I never
High Speed IMP for the PCPI SIO Card
IMP is a great little terminal program written by Irvin Hoff and I thought it could use a speed upgrade along the same lines as
High Speed Serial Port Daughter Card for the Apple II PCPI Applicard
The PCPI Applicard is one of the best CP/M cards ever made for the Apple II. It contains a Z80 chip running at either 4
Senior PROM Reverse Engineering for the Apple //e
Background The Senior PROM was a remarkably simple and beautiful debugging/kracking product for the Apple II. Other similar products were the Wildcard and the Crackshot,
Kaypro 4-84 Restoration
Fun with the Kaypro 4 I had never really planned on owning a Kaypro 4, but one day I came across a poor neglected little CP/M
Apple //e ROM Hacking
Background Many years ago I read a great article in Computist Magazine about modifying the Apple ][+ ROM code to allow halting the computer at