Path: utzoo!mnetor!uunet!husc6!psuvax1!vu-vlsi!cbmvax!daveh
From: daveh@cbmvax.UUCP (Dave Haynie)
Newsgroups: comp.sys.mac
Subject: Re: Will DMA ever be used in the Mac?
Message-ID: <2942@cbmvax.UUCP>
Date: 14 Dec 87 19:50:15 GMT
References: <76000065@uiucdcsp>
Organization: Commodore Technology, West Chester, PA
Lines: 23

in article <76000065@uiucdcsp>, gillies@uiucdcsp.cs.uiuc.edu says:
> Nf-ID: #R:iuvax.UUCP:5094:uiucdcsp:76000065:000:1583
> 
> (1) Apple wants all its peripherals to work with all its computers.
> ....  Apple has settled on SCSI so that all its disks will be
> hardware interchangeable.  So when you sell (or junk) that Macintosh
> 128 and buy a Mac II, you don't have to throw away that disk drive OR
> modem.

No good.  We use Mac compatible hard disk drives on Amigas with DMA driven
SCSI all the time.  SCSI is a reasonably standard interface, and Mac compatible
SCSI a more standard subset of it (at least these days).  SCSI tells you only
how data gets off the hard disk drive, not how that data ultimately winds up
in the computer's memory.  The good news is that is Apple ever decided to 
give you a DMA driven SCSI port, all the currently existing SCSI peripherals
would work with it, only faster.

> Don Gillies {ihnp4!uiucdcs!gillies} U of Illinois
>             {gillies@p.cs.uiuc.edu}
-- 
Dave Haynie     Commodore-Amiga    Usenet: {ihnp4|uunet|rutgers}!cbmvax!daveh
   "The B2000 Guy"              PLINK : D-DAVE H             BIX   : hazy
		"I can't relax, 'cause I'm a Boinger!"