Path: utzoo!attcan!uunet!mcvax!hp4nl!botter!star.cs.vu.nl!ast
From: ast@cs.vu.nl (Andy Tanenbaum)
Newsgroups: comp.os.minix
Subject: Re: wierd problem building boot disk (bad magic number)
Keywords: kernel build magic number data space
Message-ID: <1834@ast.cs.vu.nl>
Date: 20 Dec 88 13:29:19 GMT
References: <3931@hubcap.UUCP>
Reply-To: ast@cs.vu.nl (Andy Tanenbaum)
Organization: VU Informatica, Amsterdam
Lines: 9

In article <3931@hubcap.UUCP> rwberry@hubcap.UUCP (Robert W Berry) writes:
>Another quick question: why do you not have to link /usr/lib/head.s
>into the kernel.  
It has a lot to do with mpx88 being in assembly code, but more with the
fact that when MM or FS is started up, the kernel pushes a simulated
3 word interrupt sequence onto the stack and then does an RTI.  The head.s
file provides space for that stack.  The kernel isn't started up this way.

Andy Tanenbaum (ast@cs.vu.nl)