| [Live demo](http://copy.sh/v86/). |
| |
| |
| How does it work? |
| - |
| |
| v86 emulates an x86-compatible CPU and hardware. Here's a list of emulated hardware: |
| |
| - An x86 compatible CPU. The instruction set is around Pentium 1 level. Some |
| features are missing, more specifically: |
| - Task gates, far calls in protected mode |
| - 16 bit protected mode features |
| - Single stepping |
| - MMX, SSE |
| - A bunch of FPU instructions |
| - Some exceptions |
| - A floating point unit (FPU). Calculations are done with JavaScript's double |
| precision numbers (64 bit), so they are not as precise as calculations on a |
| real FPU (80 bit). |
| - A floppy disk controller (8272A). |
| - An 8042 Keyboard Controller, PS2. With mouse support. |
| - An 8254 Programmable Interval Timer (PIT). |
| - An 8259 Programmable Interrupt Controller (PIC). |
| - A CMOS Real Time Clock (RTC). |
| - A VGA controller with SVGA support and Bochs VBE Extensions. This includes |
| support for large resolutions. |
| - A PCI bus. This one is partly incomplete and not used by every device. |
| - An IDE disk controller. |
| - An NE2000 (8390) PCI network card. |
| - A virtio filesystem. |
| |
| |
| How to build, run and embed? |
| - |
| |
| - In order to build the `cpu.js` file, you need `make` and `cpp` (the C preprocessor). |
| Run: `make src/cpu.js`. |
| - If you want a compressed and fast (i.e. with debug code removed) version, you |
| need Closure Compiler. Pull the submodule using |
| `git submodule update --init --recursive closure-compiler` and run `make v86_all.js`. |
| - ROM and disk images are loaded via XHR, so if you want to try out `index.html` |
| locally, make sure to serve it from a local webserver. |
| - For more details on how to customize the behaviour and interface, see [docs/adapters.md](docs/adapters.md). |
| - If you want only want to embed v86 on website you can use libv86.js. For |
| usage, check out [basic.html](docs/samples/basic.html). |
| |
| |
| Why? |
| - |
| |
| Similiar projects have been done before, but I decided to work on this as a fun |
| project and learn something about the x86 architecture. It has grown pretty |
| advanced and I got Linux and KolibriOS working, so there might be some actual |
| uses. |
| |
| If you build something interesting, let me know. |
| |
| |
| Compatibility |
| - |
| |
| Here's an overview of the operating systems supported in v86: |
| |
| - Linux works pretty well. Graphical boot fails in many versions, but you |
| mostly get a shell. The mouse is often not detected automatically. |
| - Damn Small Linux (2.4 Kernel): Run with `lowram` and choose PS2 mouse in |
| xsetup. Takes circa 10 minutes to boot. |
| - Tinycore (3.0 kernel): `udev` and `X` fail, but you get a |
| terminal. |
| - Nanolinux works. |
| - Archlinux works. Add `atkbd` to `MODULES` in `/etc/mkinitcpio.conf`. |
| - FreeDOS and Windows 1.01 run very well. |
| - KolibriOS works. A few applications need SSE. |
| - Haiku boots, but takes very long (around 30 minutes). Set the memory size to 128MB. |
| - ReactOS doesn't work. |
| - No Android version seems to work, you still get a shell. |
| |
| You can get some infos on the disk images here: https://github.com/copy/v86/tree/master/images |
| |
| |
| How can I contribute? |
| - |
| |
| - Add new features (hardware devices, fill holes in the CPU), fix bugs. Check |
| out the issues section and concact me if you need help. |
| - Report bugs. |
| - Donate. Via Bitcoin: |
| [`14KBXSoewGzbQY8VoznJ5MZXGxoia8RxC9`](https://blockchain.info/address/14KBXSoewGzbQY8VoznJ5MZXGxoia8RxC9). |
| If you want to donate elsewhere, let me know. |
| |
| License |
| - |
| |
| Simplified BSD License, see [LICENSE](LICENSE), unless otherwise noted. |
| |
| |
| Credits |
| - |
| |
| - Test cases via QEMU, http://wiki.qemu.org/Main_Page |
| - https://github.com/creationix/node-sdl |
| - ascii.ttf (used in node) from http://www.apollosoft.de/ASCII/indexen.htm |
| - [Disk Images](https://github.com/copy/images) |
| - [The jor1k project](https://github.com/s-macke/jor1k) for 9p and filesystem drivers |
| |
| |
| More questions? |
| - |
| |
| Shoot me an email to `copy@copy.sh`. Please don't tell about bugs via mail, |
| create a bug report on GitHub instead. |
| |
| |
| Author |
| - |
| |
| Fabian Hemmer (http://copy.sh/, `copy@copy.sh`) |
| |