Josef “Jeff” Sipek

As I mentioned over a week ago, people have found copies of First Edition UNIX source. Today, I managed to accidentally stumble on a google code project with said code: unix-jun72.

You can check out the entire code from the subversion repo:

svn checkout http://unix-jun72.googlecode.com/svn/trunk/ unix-jun72

Then look at something like pages/e01-01…

$ cat pages/e01-01 
/ u1 -- unix

unkni: / used for all system calls
sysent:
	incb	sysflg / indicate a system routine is
	beq	1f / in progress
	jmp	panic / called if trap inside system
1:
	mov	$s.syst+2,clockp
	mov	r0,-(sp) / save user registers
...

Pretty sweet, huh?