Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!mimsy!eneevax!iarocci From: iarocci@eneevax.UUCP (John Iarocci) Newsgroups: comp.sys.atari.st Subject: Re: BIOS re-entrancy Message-ID: <966@eneevax.UUCP> Date: Sun, 5-Jul-87 18:20:15 EDT Article-I.D.: eneevax.966 Posted: Sun Jul 5 18:20:15 1987 Date-Received: Sun, 5-Jul-87 22:45:20 EDT Reply-To: iarocci@eneevax.umd.edu.UUCP (Bill Dorsey) Distribution: world Organization: Amgem, Inc. Lines: 38 In article <767@atari.UUCP>, apratt@atari.UUCP (Alan Pratt) says: > I'm writing a multi-tasking kernel, and trying to find > a safe way ... > > | Bill Dorsey 'Imagination is more important than knowledge.' >>You sure are imagining... There are no safe ways to do *anything* with >>the current GEMDOS in terms of a multi-tasking kernel. If you want it, >>buy Beckmeyer or write your own OS. It can be done (we're considering >>it) but it ain't easy, and it is IMPOSSIBLE to force this on the current >>GEMDOS. How did Beckmeyer do it? He wrote his own OS. Sorry, kids. >> >>/----------------------------------------------\ >>| Opinions expressed above do not necessarily | -- Allan Pratt, Atari Corp. >>| reflect those of Atari Corp. or anyone else. | ...lll-lcc!atari!apratt >>\----------------------------------------------/ (APRATT on GEnie) Maybe I was really imagining when I bought my ST and expected to be able to get technical support on occasion! The last thing I expected was a statement that what I want to do is impossible when it has already been done (micro- RTX). Of course, the, "Sorry kids," reference didn't help my self-esteem any either. By the way, Allan, I believe Mr. Beckemeyer did not re-write the BIOS, XBIOS, and GEMDOS routines in his Micro-RTX package. I am told he uses the existing OS functions, simply not allowing a context switch while the processor is in these OS functions. Therefore, there would appear to be no need to re-write the entire OS. Thanks again for the informative tips. ------------------------------------------------------------------------------- | Bill Dorsey 'Imagination is more important than knowledge.' | | - Albert Einstein | | 'He who has imagination without learning has wings and no feet.' | | - Joubert | | ARPA : iarocci@eneevax.umd.edu | | UUCP : [seismo,allegra,rlgvax]!umcp-cs!eneevax!iarocci | -------------------------------------------------------------------------------