CPU Simulations written in Ada
This is spun off of the Pi-Mainframe repository. Moving simulation into a separate repository will allow simulators to be developed more independently as well as used in other applications.
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The root of the simulators is the abstract object "simulator" defined in the BBS.Sim_CPU package. It defined the external interface that all simulators must implement. It is expected to evolve as some actual CPU simulators get implemented.
The following simulators are implemented.
This is not really a CPU simulator. Its main purpose is to blink the lights in the Pi-Mainframe in interesting patterns.
All 8080/8085 and Z-80 instructions have been implemented.
All the 68000 CPU instructions have been implemented.
All of the instructions have been implemented and tested. I/O and interrupts also have been implemented and tested.
This is still under development. Most of the PDP-11/10 instructions have been implemented. The initial goal is to simulate a PDP-11/10 with some basic devices and be able to boot and run RT-11. Additional models and devices may be added later.
A command line interface is provided for development of both the simulators and software that runs on the simulator.
See the PDF documentation for more details on the CLI.
For more information on the embedded tiny-Lisp interpreter.
See the PDF documentation for more details on the Lisp extensions.