This looks cool for x86. Somewhat along these lines, is there a piece of software that lets you emulate chips, connections and custom built systems? I’ve been

This looks cool for x86. Somewhat along these lines, is there a piece of software that lets you emulate chips, connections and custom built systems? I’ve been trying to play with building an OS for riscv (and / or maybe pic32) using qemu, but I’d like to simulate my own display, keyboards and other components. Basically a digitised bread board where you can send compiled code to emulated chips and run.