MOS Development Start

This weekend I got a little bored, and decided to start up operating system development again.  There is a video of MOS running at the end of the post;

I know, it's been a while.  Firmware development is pretty similar anyway (they both use cross-compilers and have almost nothing in the way of library code.  Originally I bought the HP 530S desktop machine in the video for OS development testing.  I figured I would have a go at making MOS boot on the test machine.  Well, here is an overview.

I have the following directory structure setup:

The functionality provided in my build setup so far:

• documentation
• object dumps
• size of kernel
• building the kernel
• rebuilding the kernel
• cleaning
• updating the floppy image

I am using (of course) standard Linux tools:

• gcc
• nasm
• ld
• objdump
• doxygen
• size
• make
• cscope
• ctags
• perforce

Compilation has pretty clean output (when stuff goes right, anyway) :

The output isn't that bad when stuff goes wrong either:

Bochs does a pretty good job of running MOS for debugging / testing quickly:

I have already found the CPU Register window helpful in debugging:

I am also starting to really become a fan of the doxygen generated documentation, this just looks fantastic:

Last, but not least, here is the video I promised at the start of the post.