PDP-8 Simulator for the Raspberry Pi Pico and the PiDP-8/I Front Panel
This code is heavily based on Oscar Vermeulen's PiDP-8/I software and it's intent is to allow a Raspberry Pi Pico module to replace the Raspberry Pi in Oscar's design. It is also based on Ian Schofield's PDP-8 simulator for the Pimeroni Tiny 2040. I switched to the Raspberry Pi Pico because it exposes enough pins to interface to the PiDP-8/I front panel.
This code is a work in progress. The basic PDP-8 simulator is working thanks to Ian's code but the interface to the PiDP8/I front panel is in progress. Also, only the TTY IOT instructions are implemented so it will not run OS/8 at present. My priority is to get the front panel interface working before diving into the disk interface.
The serial filesystem code that supports the DF32 drive emulation is based on code by Eric Smith.
Anyway, my thanks to Oscar, Ian, and Eric for making their code available!
David Betz