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