Expanding the MPF-1

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Expanding the Micro-professor MPF-1 Z80 trainer for serial comms, extra RAM and SD card program storage

Gary Hammond

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Initial release 1.1
08/11/2024 at 04:43 • 0 comments

The first release for general usage is v1.1.0.
The SD card specific code has been refactored into library files with conditional compiles in MinOS.asm to load in the hardware driver required. This has been tested on an expanded MPF-1 using the original setup in the gallery as well as cabling a second SD card to the Z80 PIO/CTC port on the MPF-1.
There were several small speed improvements made in the IO drivers, plus the ability to arbitrarily decide which IO pins can be used for the 4 lines on the SD card module. This allows for custom configurations.
The program is basically ready for testing and feedback.
Future work includes:
- Adding TEC-1G default serial support.
- Adding support for the KS Witchit Z80 kit. This needs an adapter PCB as it's Z80 interface is non-standard. PCB's have been designed and ordered, just waiting for them to arrive and test.