The heart of Minix

The 'save' assembly function in /src/kernel/mpx386.s is really the heart of the Minix OS. Discovering and understanding this function is like finding the holy grail. 'save' does some magical things. It doesn't follow any rules. It lives in its own world :-)

Coding on bare metal

Went through the startup process in the Minix book again. It makes more sense now. The next section explains interrupt processing excellently. This is where we really begin to understand how the illusion of multiple processes is created.

vish is a little closer to looking normal

One of the good engineers I know found out why my shell is not able to deal with commands without absolute path names. The problem was that I was using the wrong flavor of exec. Now that I am using execvp, this issue is resolved. execvp searches for the executable in the directories that are listed in the PATH env variable. Thanks Linu.