Re: turning off the instruction cache

Article View: comp.sys.mac

Article #17235

#17235

From: Kenton Abbott Hoover
Date: Mon, 06 Jul 1987 21:27

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In article <3814@spool.WISC.EDU> phil@speedy.WISC.EDU (Phillip Krueger) writes:
>Mac software bombs on it.  Could somebody please give me directions on
>how to turn off the 68020 instruction cache?  I'm hoping that'll help.
In MPW Assembler syntax:
		MACHINE	MC68020
CacheOff	MAIN
		CLR	D0
		MOVE 	DO, CACR
		RTS
		END
This is barebones, but it should work.

>Can it be done without an assembler?  Since neither of us is very experienced
>with a Mac, a great deal of detail would be greatly appreciated.

Any language that supports inline code will do this.  Mail for further details.


-- 
!   Kenton A. Hoover             {hoptoad,hplabs,lll-lcc,ptsfa}!well!shibumi ! 
!                                 SNAIL: 1748 Clement Street                 !
!   Prescriptive Technology              San Francisco, CA 94121             !
! "Evil will always triumph over good because good is dumb!"                 !

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rochester!cornell!uw-beaver!mit-eddie!ll-xn!ames!lll-tis!lll-lcc!well!shibumi
From: shibumi@well.UUCP (Kenton Abbott Hoover)
Newsgroups: comp.sys.mac
Subject: Re: turning off the instruction cache
Message-ID: <3506@well.UUCP>
Date: Mon, 6-Jul-87 17:27:43 EDT
Article-I.D.: well.3506
Posted: Mon Jul  6 17:27:43 1987
Date-Received: Wed, 8-Jul-87 06:15:16 EDT
References: <3814@spool.WISC.EDU>
Reply-To: shibumi@well.UUCP (Kenton Abbott Hoover)
Distribution: world
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 23
Keywords: MacII 68020

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