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Top 23 Assembly Retrocomputing Projects
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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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nes-elite-beebasm
Fully documented and annotated source code for Elite on the Nintendo Entertainment System (NES)
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GLaBIOS
A modern, scratch-built, open-source (GPLv3) alternative ROM BIOS for PC, XT, 8088 Clone or Turbo PCs.
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prog8
high level programming language and compiler targeting 6502 machines such as the C-64 and CommanderX16
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IBM-PC-BIOS
This is a reconstruction of the original 1981-82 IBM PC BIOS source code using scanning and transcription of the BIOS listings found in the IBM Technical Reference manuals.
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6502sp-elite-beebasm
Fully documented and annotated source code for Elite on the BBC Micro with a 6502 Second Processor
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macseadb88
Firmware for PIC16F88/87 as a drop-in replacement for the Macintosh SE's stock ADB controller.
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dflat
dflat is a BASIC-like language for 8-bit micros and retro computers running on 6502 and 65c02 (by 6502Nerd)
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Compile ITS and just run :macsyma at the DDT prompt (shell/debugger) from ITS:
https://github.com/pdp-10/its
The syntax it's the same, I even made a plot and 'printed' into the host from an ARDS output from the plot command, by converting the file into PPM->PNG or PPM->PDF.
Project mention: Fully documented source code for Elite on the BBC Micro | news.ycombinator.com | 2023-06-18
The NES version is my favorite 8-bits game. Such mind blowing to have 3D graphics on this console. The manual referred to rock hermit, I spent many hours searching for them, without encountering any... I remembered discovering by accident how to escape hyperdrive and be assaulted by Thargoids. What a game!
Document source files is on GitHub [1].
[1]: https://github.com/markmoxon/nes-elite-beebasm
Project mention: Found this guy sitting in my University’s ewaste room… | /r/retrobattlestations | 2023-06-13If you don't find the original and want to do your own, let me gently plug https://github.com/davidgiven/cpmish as a turnkey CP/M build system? Some of the commands are a bit janky but it should be easier than rolling your own. There's a choice of the original DR BDOS and CCP or ZCPR3 and ZSDOS.
Project mention: GLaBIOS A modern, scratch-built, open-source (GPLv3) alternative ROM BIOS | news.ycombinator.com | 2024-02-25
Project mention: Elite: "The game that couldn't be written" -- tech overview | /r/Demoscene | 2023-12-07The fully documented source for the BBC Micro (6502) source is here: https://github.com/markmoxon/master-elite-beebasm
ADB has a proposed replacement.
As much as I love Lua its very difficult to shoe-horn into an 8-bit CPU, especially with limited RAM... but there are other efforts to bring more modern languages to these platforms, and one that strikes me as interesting is dflat, from 6502Nerd:
https://github.com/6502Nerd/dflat/wiki
(See language description here: https://github.com/6502Nerd/dflat/wiki/2.-Language-Descripti...)
Maybe something like this could evolve/be adapted for continued modern development needs?
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).
Assembly Retrocomputing related posts
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GLaBIOS A modern, scratch-built, open-source (GPLv3) alternative ROM BIOS
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MartyPC is a cycle accurate PC XT Emulator and the first to run 5150 Demo
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Fully documented source code for Elite on the BBC Micro
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I learned to program the Commodore 64 in basic and compiled C
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80286 ROM BIOS - open-source code base?
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Apple II Desktop Updated – Version 1.2 Alpha 48
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mTCP 2022-07-01 (TCP/IP and programs for old DOS PCs) is available
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A note from our sponsor - InfluxDB
www.influxdata.com | 24 May 2024
Index
What are some of the best open-source Retrocomputing projects in Assembly? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | its | 821 |
| 2 | Zeal-8-bit-OS | 528 |
| 3 | cassette-elite-beebasm | 414 |
| 4 | nes-elite-beebasm | 368 |
| 5 | cpmish | 336 |
| 6 | a2d | 256 |
| 7 | GLaBIOS | 196 |
| 8 | PLASMA | 188 |
| 9 | prog8 | 136 |
| 10 | supermon64 | 130 |
| 11 | c64-elite-flicker-free | 76 |
| 12 | sebasic4 | 61 |
| 13 | IBM-PC-BIOS | 36 |
| 14 | tashtalk | 33 |
| 15 | 6502sp-elite-beebasm | 32 |
| 16 | revs-beebasm | 28 |
| 17 | master-elite-beebasm | 25 |
| 18 | spectrum-desolate | 23 |
| 19 | ISA_8bitNetwork_8019 | 23 |
| 20 | teletext-elite | 20 |
| 21 | macseadb88 | 18 |
| 22 | dflat | 18 |
| 23 | mandelbrot | 15 |
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