• Getting Bootable Image
• Cross compilation
• Getting Source Code
• Setup link for ASDF
• Build Floppy Image
• With SBCL alone
• With Emacs+SLIME
• Run Image
• VirtualBox
• Bochs

Getting Bootable Image

Currently, cross compilation is needed to build one floppy image containing yalo.

Cross compilation

Although yalo should compile on any Ansi Common Lisp implementation, it is only tested on SBCL. Therefore the following discussion is focused on how to build yalo from SBCL.

Mandatory Requirements:

• SBCL
• Subversion

Optional Requirements:

• Emacs
• SLIME

Getting Source Code

Run following command to anonymously checkout the latest source code of yalo.

$ svn checkout http://yalo.googlecode.com/svn/trunk yalo

To use git, please refer to http://code.google.com/p/support/wiki/ExportingToGit. It should be noted that when using the import command described, one additional level of directories (trunk, branches etc.) are created.

Setup link for ASDF

Run following commands to make SBCL aware of the ASDF file for the cross compiler.

$ cd yalo/cc  # Type cd yalo/trunk/cc if using git to checkout dir svn/.
$ ./lnasdf

Build Floppy Image

With SBCL alone

When using SBCL alone, type the following at REPL:

* (require 'asdf)
* (asdf:oos 'asdf:load-op 'cc)
* (cc:write-kernel "floppy.img")

One may type Ctrl-d to exit from SBCL.

With Emacs+SLIME

Inside Emacs,

1. First type M-x slime if SLIME is not started.
2. Type M-x slime-load-system then type cc when prompted for the system.
3. Type (cc:write-kernel "floppy.img") at SLIME REPL.

Run Image

There are various ways to run the image.

VirtualBox

First, add the generated floopy.img to the Virtual Media Manager. Then for the virtual machine settings, select the image file for floppy drive. Make sure that Floppy is checked for Boot order.

Bochs

First go to the directory where floppy image file is located. Then run the command below and select 6 to proceed emulation.

bochs -n 'boot: a' 'floppya: 1_44=floppy.img, status=inserted'