Files as provided to OshPark for the main CPU board in the event they are of use to anyone. I've had to park the project for an indeterminate duration. Take and use anything you find of use. There are two bugs on this board, both of which were easily correctable. I think I've detailed them somewhere but if you can't find it or have any questions in general I will try and answer any questions. Good luck, have fun.
Schematic for current work-in-progress mass storage interface that's a step towards getting CP/M on the board. Ordered some protoboards today and will update as progress develops.
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07/13/2021 at 19:44
A listing of the current under-development firmware. Includes boot and memory management, core bios, general utilities, and system monitor.
This software is operable, moderately tested, and under an iterative development/bug-fix process. The only known bugs at present stem from memory bounds wraparounds on the D(UMP) command.
A simple demo of the firmware System Monitor, currently under development. This developmental stage provides me with the interactivity necessary to focus on development of the mass storage hardware necessary to support future plans of porting CP/M 2.2.
William D. Ezell