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Article #7518

Problem with SCSI HD

#7518
From: peter saeta
Date: Wed, 08 Oct 1986 17:39
29 lines
1812 bytes
I have a 30Mbyte Magic 30 SCSI hard disk made by Rabbit Technologies and 
experience the following problem.  With the HD running, regardless of whether
it was the startup disk, regardless of whether the application launched is
on the HD, programs which operate in realtime run much slower and jerkily.

Example: in Lode Runner, the little man takes one step then pauses--
totally destroying the game, needless to say.  If the hard disk is turned
off, and the program run from floppy, it works fine.

Example: in Full Paint 1.0 when defining a rectangular region, the marquee
runs normally while the mouse button is still down (must be in Quickdraw
exclusively), but jerks after the button is let let up.

We called Rabbit Technologies who claimed that the problem was with the
Apple ROM (!!!)... that every SCSI hard disk has the same problem when
there are many files on the disk.

Does anyone know what is causing the problem and what can be done to
fix it?

Thanks in advance.

Peter Saeta

	UUCP:   saeta@husc4%harvard.UUCP
	ARPA:   saeta@husc4%harvard.harvard.edu
	BITNET: saeta@harvsc4.BITNET (??T
	USPS:	327 Gordon McKay Lab, 9 Oxford St., Cambridge, MA  02138
	ATT:	617-495-9616; 5-3357
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Message-ID: <353@husc6.HARVARD.EDU>
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-crg!nike!rutgers!husc6!husc4!saeta

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-crg!nike!rutgers!husc6!husc4!saeta
From: saeta@husc4.harvard.edu (peter saeta)
Newsgroups: net.micro.mac
Subject: Problem with SCSI HD
Message-ID: <353@husc6.HARVARD.EDU>
Date: Wed, 8-Oct-86 13:39:36 EDT
Article-I.D.: husc6.353
Posted: Wed Oct  8 13:39:36 1986
Date-Received: Wed, 8-Oct-86 22:37:05 EDT
Sender: news@husc6.HARVARD.EDU
Reply-To: saeta@molphy.UUCP (peter saeta)
Distribution: net
Organization: Harvard University, Cambridge Mass
Lines: 29
Keywords: SCSI, Rabbit, Magic 30