Skip to content

Latest commit

 

History

History
29 lines (18 loc) · 1.15 KB

README.md

File metadata and controls

29 lines (18 loc) · 1.15 KB
Raw

Leslie255's Commodore 6502 Emulator

A reference sheet for the MOS 6502 instruction set can be found at: https://www.masswerk.at/6502/6502_instruction_set.html

How to Use

There is a MemWriter struct and it's associated functions in main.c to write things into the emulator memory. Write the program into the memory, and then build and run the project by:

$ mkdir bin
$ make all && ./bin/emu6502

There is also a --dbg option for instruction-by-instruction running while printing the entire stack, values of registers, etc.

Note that the emulator likely won't work in big endian platforms.

Future Plans

All the instructions have been implemented by now, but there are still some extra work to do to make the emulator actually useful, namely:

  • IO & Interrupts (Currently BRK and RTI instructions technically work, but the emulator cannot be recovered from an interrupt)
  • Clockspeed limiter
  • Loading from memory/disk snapshots
  • An assembler

LICENSE

This project is licensed under GPLv3, earlier versions that did not have the LICENSE.txt is licensed under ALL RIGHTS RESERVED.