Update readme regarding Arch Linux

Readme.md

@@ -85,7 +85,7 @@ A testsuite is available in `tests/full/`. Run it using `node tests/full/run.js`
 How to build, run and embed?
 -
 
-- Building is only necessay for releases, open debug.html and everything should load out of the box
+- Building is only necessary for releases, open debug.html and everything should load out of the box
 - If you want a compressed and fast (i.e. with debug code removed) version, you
   need Closure Compiler. Download it as shown below and run `make build/v86_all.js`.
 - ROM and disk images are loaded via XHR, so if you want to try out `index.html`
@@ -128,7 +128,7 @@ Here's an overview of the operating systems supported in v86:
   - 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`.
+  - Archlinux works with some caveats. See [archlinux.md](docs/archlinux.md).
 - ReactOS works
 - FreeDOS, Windows 1.01 and MS-DOS run very well.
 - KolibriOS works. A few applications need SSE.

docs/archlinux.md

@@ -0,0 +1,25 @@
+(This document also applies to other Linuxes)
+
+The last version of Arch Linux that supports 32-bit is
+[2017.02.01](https://www.archlinux.org/releng/releases/2017.02.01/). Later
+versions don't work on v86.
+
+Installation using QEMU
+-----------------------
+
+
+```
+# create a 10 gigabyte disk image
+qemu-img create arch.img 10G
+
+# Follow the normal installation process
+qemu-system-x86_64 -m 256 -drive file=arch.img,format=raw -cdrom archlinux-2017.02.01-dual.iso
+```
+
+For keyboard support it is necessary to open /etc/mkinitcpio.conf and edit the following line:
+
+```
+MODULES="atkbd i8042"
+```
+
+The resulting `arch.img` is a bootable disk image for v86.