Awesome list of 6502, 65C02, 65816, ... resources

6502, 6502 Language Implementation Approaches

6502, This wiki has been set up to provide a wiki for the members of the 6502.org community

6502.org, 6502.org is a resource for people interested in building hardware or writing software for the 6502 microprocessor and its relatives

6502.org, Source code for the 6502.org website

6502_6510_maths, 6502/6510 Maths

6502tricks, Dirty tricks 6502 programmers use

dirty-tricks, Dirty tricks 6502 programmers use

MOS6502, Blog

Retro Computing blog, Retro Computing blog about small SBC systems

Retro64 blog, Blog

team6502, The story of the team ​behind the chip that launched a revolution

z80-6502, Emulating the Intel 8080 on a MOS 6502

6502.Net, A simple .Net 6502 cross-assembler

6502asm-sublime, A 6502 asm syntax definition for Sublime Text

6502bench, A workbench for developing 6502 code

6502-disassembler, A simple 6502 disassembler made in Python

6502-npp-syntax, Notepad++ Syntax Highlighting for 6502 Assembly

6502-npp-syntax, Notepad++ Syntax Highlighting for 6502 Assembly (and NESASM)

acme, Multi-platform cross assembler for 6502/6510/65816 CPU

acme-crossas, ACME is a cross assembler that can produce code for the following processors: 6502, 6510 (including illegal opcodes), 65c02 and 65816

adir-reader-simulator-assembler, Start of a 6502/65c02 simulator, disk image reader and an assembler

AS65, Simple 65C02 mini-assembler

AsmGen, 6502 assembly code generator for sprites, fonts and images (Apple II and Atari). Written in Python with documenation. There are alot of other interesting repositories on his site also

asmMerlin65816.vim, MOS 6502,65c02,65816 Assembly syntax + Merlin Add-Ons

Atalan, A fun language compiler for 8-bit systems (6502, 6510, Z80, Atari, Commodore, NES, ZX Spectrum, Atmos) with great optimization

cc65, A freeware C compiler for 6502 based systems

dcc6502, isassembler for 6502 processors

dis, Statically Tracing 6502 Disassembler

dis6502, 6502 disassembler

disasm, A disassembler for 8 bit micros

disasm6502, 6502 disassembler

easy6502, Easy6502 by Nick Morgan is one-stop accessible tutorial on 6502 assembly language programming, including a series of worked example programs which you can edit and run in the embedded emulator

gcc-6502, A port of GCC to the 6502 processor family

hac65, HAC/65 - The 6502 Inferencing Disassembler

hystricomorph, 65816 STRing COMpiler

kickc, KickC is a C-compiler that creates optimized 6502 assembler

l65, 6502 assembler from within Lua

llvm-6502, LLVM-6502

llvm-65816, This is an attempt to add support for the WDC 65816 to LLVM. Don't even try to use it yet

Merlin32, Merlin 32 is a multi-pass Cross Assembler running under Windows, Linux and Mac OS X targeting 8 bit processors in the 6502 series (such as 6502 and 65c02) and the 16 bit 65c816 processor

Merlin32ForVSCode, Merlin32 extension for Visual Studio Code

Merlin32Language, Visual Studio language service for 6502 Merlin32 cross-assembler

millfork, Millfork: a middle-level programming language targeting 6502- and Z80-based microcomputers and home consoles

n65, An assembler for the 6502 microprocessor written in Ruby

Ophis, Ophis, A cross-assembler for the 6502 series of microprocessors

osdk, The OSDK is a complete cross-development system allowing you to create software for the Oric range of computers 1

P65Utils, Utilities for the CPU 6502

parser-6502, Parser for 6502 assembler

pretty6502, A pretty printer for 6502, Z80, CP1610 and TMS9900 assembler code

prog8, High level programming language and compiler targeting 6502 machines such as the C-64

rkasm, Assembler for 6502, 65C02

sixty-five-oh-two, A 65C02 Assembly eDSL in Haskell

SixtyPical, 6502-like programming language with advanced static analysis

tcc-65816, Tiny C Compiler for 65816 CPU (based on V0.9.23) from SNES-SDK

tdis65816, A Typist's Disassembler for the 65816 in Forth

Thistle, 6502 based architecture for OpenComputers

TRSE, Turbo Rascal Syntax Error full repo

westerndesigncenter, tools to support ROMable embedded code and in–circuit debug of control and application software

wudsn-ide, WUDSN IDE is a free integrated Apple II, Atari 2600, Atari 7800, Atari 8-bit, C64 and NES development plugin for Eclipse

x86-to-6502, Attempts to translate x86 assembly into mos6502 assembly

XA, xa is a high-speed, two-pass portable cross-assembler. It understands mnemonics and generates code for NMOS 6502s (such as 6502A, 6504, 6507, 6510, 7501, 8500, 8501, 8502 …), CMOS 6502s (65C02 and Rockwell R65C02) and the 65816

xa65, xa65 is a 6502 cross assembler, running on Unix (and Unix-alikes), and producing 6502 and 65816 code. It comes complete with a set of tools

xasm, 6502 cross-assembler with original syntax extensions

yagsdisasm, Apple IIGS / 65C816 disassembler written in PHP

6502_65C02_functional_tests, Tests for all valid opcodes of the 6502 and 65C02 processor

6502asm-sublime, A 6502 asm syntax definition for Sublime Text 2

disbrowser, 65816 Disassembly Browser

language-65asm, Adds syntax highlighting to 65816/65C816/65802/6502/65C02 files in Atom, with extra support for various compilers

lcc, The lcc retargetable ANSI C compiler (65816 edition)

6502_EhBASIC_V2.22, 6502 enhanced BASIC unmodified source

ehbasic, Enhanced BASIC is a BASIC interpreter for the 6502 family microprocessors

millfork, Millfork: a middle-level programming language targeting 6502- and Z80-based microcomputers and home console

msbasic, Microsoft BASIC for 6502 (Commodore, Apple, KIM-1, AIM-65, OSI, …)

nes_snes_controller_6502, NES & SNES Controller Driver for 6502 (Commodore 64)

of816, Portable 32-bit Forth for the 65C816

pettil, 6502 Forth-83 dialect for the Commodore PET 2001

VolksForth, volksFORTH is a 16bit Forth System maintained by the German Forth Gesellschaft e.V.

VTL02, Very Tiny Language for the 6502 series of CPUs

wudsn-ide, WUDSN IDE

6502, Code for the 6502 microprocessor, mostly for the Replica 1 computer

6502_solving_de, An example how to solve a differential equations on a 6502 with Woz's floating point code

8bit Unity, The Ultimate Game SDK for 80s Computers

apple2_russian_peasant_multiplication, Russian Peasant Multiplication

arctan24, Discrete arctan function, with 24 possible outputs, in 6502 assembly

Contiki, Contiki OS for 6502 based computers. TCP/IP stack for 6502

datamatrix6502, Data Matrix barcodes in 6502 assembly language

hystricomorph, 65816 STRing COMpiler

ip65, IP65 - a TCP/IP stack for 6502 based computers

json65, A JSON parser written in 6502 assembly language

lzsa, Byte-aligned, efficient lossless packer that is optimized for fast decompression on 8-bit micros

neko, A simple library for SNES programming and development in 65816 assembly

posix-6502, Implementations of POSIX command line programs for machines targeted by the cc65 compiler

rANS on 6502, Compression routines

sweet16, Sweet 16 is a metaprocessor or pseudo microprocessor implemented in 6502 assembly language

zlib6502, 6502 inflate routine

SixtyPical, A 6502-like programming language with advanced static analysis

volksForth, 16bit Forth System

65020, The 65020 is an attempt to extend the 6502 to a more modern 32 bit design

6502_instruction_set, 6502 Instruction Set

rtf65002ppp, The RTF65002 is a 32 bit processor with an instruction set influenced by the 6502 instruction set

6502, Swift 6502 emulator

6502Android, A 6502 Emulator for Android written in Kotlin

6502emu, A project to design an emulator for the 6502 CPU

6502-Emu, 6502 Emulator written in C

6502-emu, A simple 6502 emulator, with I/O via a 6850 UART

6502-emulator, An Understandable 6502 Emulator

6502-opcodes, Exploring the visualization of 6502 opcodes

6502SimDesktop, Desktop Version of the Easy 6502 Simulator

65816.js, A JavaScript 65816 Microprocessor Emulator

acme, Multi-platform cross-assembler for MOS 6502/65C02/6510/65816 CPUs

champ, A 65C02 profiler

cpu6502, 6502 emulator in Javascript

crude65816, A crude emulator for the 65816 CPU in Forth

crustacean_6502_emulator, 6502 emulator using nightly generators to provide cycle acurate emulation and SDL for rendering

EightBit, Collection of eight-bit processor emulators (for various projects)

EightBitNet, Collection of eight-bit processor emulators (for various projects)

emu6502, MOS 6502 Emulator

emu816, A C++ based 65C816 Emulator

erc-c, An emulator for old / retro computers

go6502, 6502 Go emulation routines

i6502, A 6502/65C02 virtual machine

IDE65C02, 65C02 Development System Simulator

ksim65, Kotlin 6502/65C02 microprocessor simulator

lib6502-jit, JIT compiler for 6502 machine code, built on lib6502 and LLVM

lib65816, 65816 emulator

Lib65816, Emulator library for the 65816 CPU

Lua65816, A 65816 simulator based off of the work of lib65816

mos6502, MOS 6502 Emulator

mos6502, MOS 6502 emulator written in Rust

mos6502-delphi, A MOS 6502 CPU emulator written in Delphi (a very basic C64 + VIC20 emulator included)

Nu256, 65816 Virtual Computer

perfect6502, Perfect6502, a MOS 6502 CPU emulator that performs a simulation of the original NMOS 6502 netlist

pill_6502, 8-bit 6502 CPU and 6850 ACIA emulation on the STM32 blue pill to run Microsoft BASIC from 1977

py65, Simulate 6502-based microcomputer systems in Python

r65emu, Arduino emulation library for 8-bit microcomputers based on 6502, i8080 or z80

rk65c02, Highly experimental 65C02 machine code interpreter/emulator/disassembler (work in progress)

robo6502, Emulator

sweet16, Advances some ideas using Steve Wozniak's 6502 SWEET16 interpreted byte-code language as inspiration

symon, A MOS Technologies 6502 System Simulator

v6502cpp, Visual6502.org Javascript simulator ported to C++

visual6502, Transistor level 6502 Hardware Simulation in Javascript

visual6502remix,

vm6502, Virtual Machine, MOS 6502 emulator

x6502, x6502 is an emulator for the 6502 class of processors. It currently supports the full instruction set of the 6502 (plus a few extensions) and has a rudimentary simulated I/O bus

C256, The C256 Foenix is a new retro computer based on the WDC 65C816 running @ 14Mhz

commanderx16, Commander X16 8-bit computer with emulator

6502, Build a 6502 computer

65816, Homebrew 65816 computer

6502-sandbox, PCB with WDC 6502 or 65816, connected to FPGA, SDRAM, Audio, Video, uSD and USB

AVR_emulated_6502_4SBC, Modular 6502 SBC with emulated CPU

bravo, OMEN Bravo / 65C02-based single board computer

C256-kernel, Functional specification for the C256 system ROM

FoenixIDE, Development and Debugging Suite for the C256 Foenix Family of Computers

neon816, This project is about the design of an 8-bit/16-bit nostalgia motherboard using currently in-production parts, and designed to interface primarily with modern peripherals

pc65816, 65816 based computer

SBC, Single board computer

SBC, This site documents the design and construction of a homebrew compute

calc65, Demo Application for a 6502 Floating Point Math Package

kernel, Orix Kernel

penetrator, Remake of the ZX Spectrum game for the Commander X16

Trasm, Tricks 65816 assembler