https://github.com/zellyn/go6502

6502 Emulation Routines
https://github.com/zellyn/go6502

6502 apple2 appleii emulator go

Last synced: 10 months ago
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6502 Emulation Routines

• Host: GitHub
• URL: https://github.com/zellyn/go6502
• Owner: zellyn
• License: gpl-3.0
• Created: 2013-02-15T16:10:41.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2018-09-03T21:55:40.000Z (over 7 years ago)
• Last Synced: 2025-07-14T07:12:06.724Z (11 months ago)
• Topics: 6502, apple2, appleii, emulator, go
• Language: Go
• Size: 926 KB
• Stars: 18
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

          
go6502

======

A 6502 emulator, simulator, and assembler(s), written in Go.

[![Build Status](https://travis-ci.org/zellyn/go6502.svg?branch=master)](https://travis-ci.org/zellyn/go6502)

[![No Maintenance Intended](http://unmaintained.tech/badge.svg)](http://unmaintained.tech/)

This repository should probably be split up. It contains:

## cpu

The actual 6502 CPU emulation.

TODOs:

- [ ] Implement 65C02 variant

- [ ] Implement undocumented instructions

- [ ] Profile and speed up

## visual

A go transliteration of an old version of

https://github.com/mist64/perfect6502, the gate-level simulation of

the 6502.

TODOs:

- [ ] Incorporate recent speedups/simplifications made to perfect6502

  - [ ] [main 25% speedup](https://github.com/mist64/perfect6502/commit/b2cce8862046d99106ffe8576733acfec849592d)

  - [ ] [de-dup transistors](https://github.com/mist64/perfect6502/commit/c7ede71e52a3b98e07d05270b3e642ed18102980)

  - [ ] [bug fix](https://github.com/mist64/perfect6502/commit/aed0d9a3c37cebb48956c7ab9a3dc4ec11e8d862)

- [ ] Profile and speed up

- [ ] Write a ridiculous one-goroutine-per-transistor simulation

## asm

A 6502 assembler, more-or-less compatible with several flavors of

oldschool (and soon, modern) assemblers:

Oldschool:

- [SCMA](http://www.txbobsc.com/scsc/scassembler/SCMacroAssembler20.html)

- [Merlin](https://en.wikipedia.org/wiki/Merlin_(assembler))

- "Redbook" (A and B) the flavor used in some Apple source listings.

Modern:

- (in-progress) [as65](http://www.kingswood-consulting.co.uk/assemblers/)

- (todo) [acme](https://sourceforge.net/projects/acme-crossass/)