https://github.com/firobe/6502-ml

6502 chip simulator in OCaml
https://github.com/firobe/6502-ml

6502 emulator ocaml

Last synced: 2 months ago
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6502 chip simulator in OCaml

• Host: GitHub
• URL: https://github.com/firobe/6502-ml
• Owner: Firobe
• Created: 2018-05-30T15:10:09.000Z (over 6 years ago)
• Default Branch: main
• Last Pushed: 2024-03-14T00:20:39.000Z (9 months ago)
• Last Synced: 2024-03-14T01:32:21.196Z (9 months ago)
• Topics: 6502, emulator, ocaml
• Language: OCaml
• Homepage:
• Size: 300 KB
• Stars: 10
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# 6502-ml

6502 chip family simulator in OCaml. Created for use in a [NES emulator in OCaml](https://github.com/Firobe/nes-ml).

![CI](https://github.com/Firobe/6502-ml/actions/workflows/build.yml/badge.svg)

**Documentation** containing simple examples and reference is available [online](https://firobe.fr/6502-ml/6502-ml/).

## Usage

Assuming you have `opam` installed with an existing switch, either:

- add a pin to this repo: 

   > `opam pin add nes-ml https://github.com/Firobe/6502-ml.git`

- or clone and run

  > `opam install .`

Furthermore, you can run the tests with `dune runtest`. To use the library in other programs, see the [online documentation](https://firobe.fr/6502-ml/6502-ml/).

Its zero page starts at address `0x0000`.  

## Development status

The CPU passes all functional tests of [Klaus Dormann's test suite](https://github.com/Klaus2m5/6502_65C02_functional_tests) (`klaus.bin` is an assembly of `6502_functional_test.a65`) and the [Nestest ROM](http://www.qmtpro.com/~nes/misc/nestest.txt) as compared to Nintendulator.  

Cycles count is accurate even for supported unofficial instructions, and tested.  

## References

Great ressources used:

- http://www.6502.org/tutorials/

- http://www.obelisk.me.uk/6502/

- https://wiki.nesdev.com/

- http://www.masswerk.at/6502/6502_instruction_set.html

- http://nesdev.com/6502_cpu.txt