80C32 c/c++ API

[larry104]

I want to simulate an old hardware console. I have the schematics and the original ROM. It loads fine into ucsim but in order to properly get it to work I need to emulate some peripherals e.g. a 1 to 16 decoder, a serial LED driver driven by p1.0,p1.1, p1.2, p1.3 etc. Is there a programmatic (c/c++) way to interface with the simulator and get synchronized R/W access to the 80C32 ports?

[danieldrotos]

If you are going to simulate (emulate) outside circuit --what is conneceted to controller's port-- it is not possible in uCsim, as it simulates the controller only.

You can examine port values during simulation if you open more consoles and dump sfr on a console, while simulation is running. You can check port variables with expr command as well. Or you can open the interactive port display to show port values and provide port inputs through keyboard.

You can set an event breakpoint and do something when sfr of the port is written.

If you could simulate outside circuit with a verilog simulator, you have to develop an external tool to control uCsim and the verilog simulator together somehow. It is up to you. To pick up information about events in uCsim you can use vcd driver, if you use a FIFO file as output, you can route events to an external tool in VCD syntax.

So, there are possibilities, but I don't know what is the best way. It depends on what are you going to achive.

[larry104]

Ok, thanks a lot for the insight.