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Top 23 6502 Open-Source Projects
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CLK
A latency-hating emulator of: the Acorn Electron and Archimedes, Amstrad CPC, Apple II/II+/IIe and early Macintosh, Atari 2600 and ST, ColecoVision, Enterprise 64/128, Commodore Vic-20 and Amiga, MSX 1/2, Oric 1/Atmos, early PC compatibles, Sega Master System, Sinclair ZX80/81 and ZX Spectrum.
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puNES
Qt-based Nintendo Entertaiment System emulator and NSF/NSF2/NSFe Music Player (Linux, FreeBSD, OpenBSD and Windows)
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cassette-elite-beebasm
Fully documented and annotated source code for the cassette version of Elite on the BBC Micro
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SaaSHub
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lbForth
Self-hosting metacompiled Forth, bootstrapping from a few lines of C; targets Linux, Windows, ARM, RISC-V, 68000, PDP-11, asm.js.
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nes-elite-beebasm
Fully documented and annotated source code for Elite on the Nintendo Entertainment System (NES)
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Projects
Ted Fried's MicroCore Labs Projects which include microsequencer-based FPGA cores and emulators for the 8088, 8086, 8051, 6502, 68000, Z80, Risc-V, and also Typewriter and EPROM Emulator projects. MCL51, MCL64, MCL65, MCL65+, MCL68, MCL86, MCL86+, MCL86jr, MCLR5, MCLZ8 (by MicroCoreLabs)
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millfork
Millfork: a middle-level programming language targeting 6502- and Z80-based microcomputers and home consoles
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lzsa
Byte-aligned, efficient lossless packer that is optimized for fast decompression on 8-bit micros
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ProcessorTests
A language-agnostic JSON-encoded instruction-by-instruction test suite for the 8088, 68000, 65816, 65[c]02 and SPC700 that includes bus activity.
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SaaSHub
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Project mention: Bit random but does anyone know how possible it is to get this look within Stella? [Pallete/TV Effects]. | /r/AtariEmulation | 2023-06-06Not Stella, but the Clock Signal emulator does a great job of emulating the TV effects. The 2600 emulation isn't quite as good as Stella, though.
Project mention: Fully documented source code for Elite on the BBC Micro | news.ycombinator.com | 2023-06-18
Project mention: LLVM-MOS 6502 Compiler Backend: Having a Blast in the Past | /r/beneater | 2023-11-15
Project mention: BBC Basic returns on multiple platforms, open sourced | news.ycombinator.com | 2023-11-29One of the books was an entire annotated disassembly of the BASIC interpreter, if memory serves. I vaguely remember there being some sort of kerfuffle about that.
Another thing that one got: a printed circuit diagram of the machine.
As for today: One can get get an entire annotated disassembly for Elite, including the version that used the Second Processor: https://www.bbcelite.com
Project mention: NES emulator with network multiplayer written in Go | news.ycombinator.com | 2023-08-19
Here’s a working one already https://github.com/mnaberez/py65
Project mention: Test suit for some emulated CPU like 6502 and 68000 | news.ycombinator.com | 2023-09-06
I use a PIC16F microcontroller. Schematics and PIC code in my HBC-56 repo. https://github.com/visrealm/hbc-56
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
6502 related posts
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Infinite Mac: Turning to the Dark Side
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Picotron Is a Fantasy Workstation
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Alternative designs for a keyboard interface?
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After Wozmon I want to create a game - 6502
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Best compiler to write .nes cartridge ROMs for testing my own emulator?
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Starting Game Boy emulator, need a little insight
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BBC Basic returns on multiple platforms, open sourced
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A note from our sponsor - InfluxDB
www.influxdata.com | 10 May 2024
Index
What are some of the best open-source 6502 projects? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | jsnes | 5,990 |
| 2 | CLK | 893 |
| 3 | pcjs | 746 |
| 4 | AppleWin | 669 |
| 5 | puNES | 566 |
| 6 | c64ref | 458 |
| 7 | cassette-elite-beebasm | 411 |
| 8 | lbForth | 408 |
| 9 | llvm-mos | 394 |
| 10 | nes-elite-beebasm | 364 |
| 11 | Projects | 356 |
| 12 | dendy | 313 |
| 13 | appler | 251 |
| 14 | a2d | 246 |
| 15 | millfork | 245 |
| 16 | llvm-mos-sdk | 240 |
| 17 | json65 | 238 |
| 18 | lzsa | 229 |
| 19 | py65 | 227 |
| 20 | durexforth | 222 |
| 21 | PLASMA | 188 |
| 22 | ProcessorTests | 180 |
| 23 | hbc-56 | 173 |
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