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
- gcc
- nasm
- ld
- objdump
- doxygen
- size
- make
- cscope
- ctags
- perforce
Compilation has pretty clean output (when stuff goes right, anyway) :
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.
