PDP-11 Emulator and Toolchain

Its still early in development, but it can run some bare-metal program. Build them with make -C examples, and try e.g., ./emu examples/build/echo_interrupt for an interrupt-based echo console with an emulated KH11 teletype.

Repo Structure

• aout/: a.out object/binary format library.
• assembler/: PDP-11 assembler library and cli binary.
• as: script to compile and run assembler.
• common/: library with the assembly data structures, constants, and some helper functions.
• disassembler/: PDP-11 disassembler library and cli binary.
• emulator/: PDP-11 emulator library and cli binary.
• emu: script to compile and run emulator.
• examples/: example programs to run in the emulator.
  • fib: print the first 10 Fibonacci numbers.
  • timer_ticks: print at a fixed interval based on timer interrupts.
  • echo_spin: a spinning-based echo console.
  • echo_interrupt: an interrupt-based echo console.
  • threads: a demonstration of preemptive multitasking (two threads repeatedly print their TIDs).
• interpreter/: a helper cli binary that assembles and emulates the specified program.
• interp: script to compile and run interpreter.
• tests/: integration tests.

Github