Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!gatech!emcard!fedeva!csun!polyslo!dorourke
From: dorourke@polyslo.CalPoly.EDU (David M. O'Rourke)
Newsgroups: comp.sys.mac
Subject: Re: System 6.0.2 seems to work on a 2 meg 512Ke
Keywords: Sound, Map, cdev
Message-ID: <5726@polyslo.CalPoly.EDU>
Date: 14 Nov 88 03:26:43 GMT
References: <4825@polyslo.CalPoly.EDU> <20031@apple.Apple.COM> <68258@felix.UUCP> <5630@polyslo.CalPoly.EDU> <16857@agate.BERKELEY.EDU>
Reply-To: dorourke@polyslo.CalPoly.EDU (David M. O'Rourke)
Organization: Cal Poly State University -- San Luis Obispo
Lines: 26

In article <16857@agate.BERKELEY.EDU> denn@violet.berkeley.edu (Leonard Rosenthol) writes:
>	This is not true, David.  Acutally what happens is that all cdevs have
>a resource of type mach which tells the Control Panel on which machiens
>to bring it up on (ie. it makes no sense to bring up the monitors cdev
>on a MacPlus).  Map and Sound are set with a value that tell them not to
>come up on the older machines.  If you go in with ResEdit and change the
>value of the mach resoure to FFFF0000 then they will come up on your
>machine too...

  I do think that they actually check for the clock chip because Sound and
Map work on a 512Ke that has the newer clock chip.

  Besides I have it on reliable authority that the Sound CDEV's does actually
"check" for the new clock chip and doesn't completely rely on the mach
resource.  But I could be wrong, and I welcome corrections, but I'm not 
ready to give up yet.  I think my original posting was accurrate :-).

  In system 6.0 I think you are correct, but they added some stuff to 
6.0.2 so that things work on a 512Ke, and that forced to to kinda/sorta
{read not completely} abandon the mach resource when dealing with the
absence of the clock chip.
-- 
David M. O'Rourke                                  dorourke@polyslo.calpoly.edu

"If it doesn't do Windows, then it's not a computer!!!"
Disclaimer: I don't represent the school.  All opinions are mine!