https://github.com/MCJack123/lunatic86

x86 emulator in Lua (ported to CraftOS-PC)
https://github.com/MCJack123/lunatic86

Last synced: about 1 month ago
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x86 emulator in Lua (ported to CraftOS-PC)

• Host: GitHub
• URL: https://github.com/MCJack123/lunatic86
• Owner: MCJack123
• Created: 2019-06-21T03:31:42.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-02-01T19:58:14.000Z (almost 4 years ago)
• Last Synced: 2024-08-02T07:06:58.220Z (4 months ago)
• Language: Lua
• Homepage: https://git.asie.pl/asie/lunatic86
• Size: 98.6 KB
• Stars: 14
• Watchers: 2
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: changelog.txt

Awesome Lists containing this project

• awesome-computercraft - lunatic86 - A port of an 8086 PC emulator for ComputerCraft. (Lua programs / Fun)

README

        
# Lunatic86

Barely-IBM-compatible PC emulator written in Lua 5.3.

## Compilation Instructions

1. Run ./compile.sh on a (preferably?) Linux machine.

2. Edit disks.lua to point to your disk images.

3. Run platform_oc.lua in OpenComputers or Kallisti, or platform.lua with lcurses (text mode only).

## What's Emulated?

### Probably decently

* CPU: 8086-esque

* Graphics: CGA (640x200x1, 320x200x2, text modes), 320x200x8 (Mode 13h)

    * With some partial I/O ports emulation!

* BIOS: High-level emulation

    * Decent implementations of most expected interrupts

### Pretend

* Audio: PC Speaker (Computronics Beep Card)

* Keyboard: PC XT-compatible

* 8259 PIC

* 8253 PIT

### Not even tested

* Graphics: Tandy-compatible

### Not even implemented

* BIOS: Serial/Printer Port interrupts, INT 15h

* Pretty much anything not listed

## Notes

* platform.lua outputs debug text to stderr. Run with "2>/dev/null" to avoid.

* The performance on my desktop (i7-4790K) seems to be:

    * about 3x PC XT in Lua 5.3,

    * about 0.6x PC XT in latest stable OpenComputers,

    * about 1x PC XT in latest stable OpenComputers + [fixed machine.lua](https://github.com/MightyPirates/OpenComputers/pull/2877) - you may override 

it server-side,

    * about 1.8x PC XT in latest stable OpenComputers + fixed machine.lua + natives recompiled to actually use -O2 and not debug mode,

    * about 2.5x PC XT in Kallisti with the timeout-checking code disabled altogether, and about 1.8x PC XT otherwise.

* There's a lot of bugs and hacks.

## Known issues

Many. See the Wiki for the Compatibility List.

In particular, a "reduced memory usage" mode has to be introduced for OC users.

## Licensing

TBD. For now, consider it "all rights reserved" - or just ask on IRC.

## Acknowledgements

* 8086tiny, for providing the initial motivation and being one of the emulators which proved helpful during 

development

* Publicly available 8086 test suites used:

    * 80186_tests.zip

    * [riapyx's test suite](https://github.com/ynben/riapyx) - incomplete, but helpful nonetheless