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: BIOS disk driver
Message-ID: <1730@ast.cs.vu.nl>
Date: 30 Nov 88 10:59:58 GMT
References: <79151@sun.uucp>
Reply-To: ast@cs.vu.nl (Andy Tanenbaum)
Organization: VU Informatica, Amsterdam
Lines: 15

In article <79151@sun.uucp> alanf%smile@Sun.COM (Alan Fargusson) writes:
>There is a problem with calling the ROM BIOS when you are using interrupts on
>the Z-248.  The problem is that the BIOS switches to an internal stack which
>is very small.  If an interrupt occurs during the call to the BIOS it is
>likely that this stack will overflow.  There are other potential problems as
>well.

Progress at last.  Do you have any suggestions about how to fix it?  I had
hopes that the BIOS routine would work on all machines.  Perhaps this is a
pipe dream.  However, it seems strange that bios_wini.c does work on my
machine, which is also a Z-248.  What is going on here?

What other problems are there?

Andy Tanenbaum