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From: bombadil@diku.dk (Kristian Nielsen)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Correct code for turning off 020/030 caches?
Message-ID: <1991Jun10.145824.3956@odin.diku.dk>
Date: 10 Jun 91 14:58:24 GMT
References: <1991Jun5.033401.27422@en.ecn.purdue.edu> <mykes.3186@amiga0.SF-Bay.ORG>
Sender: bombadil@freja.diku.dk
Organization: Department of Computer Science, U of Copenhagen
Lines: 19

mykes@amiga0.SF-Bay.ORG (Mike Schwartz) writes:


>RIGHT MOUSE BUTTON:

>btst.b	#2,$dff016

  According to the manuals, byte access to the custom registers isn't
supported. So, make the above something like

	move.w	$dff016,dn
	btst	#10,dn

Of course, so many programs does it the other way, so perhaps commodore will
have to keep byte access forever as a hardware kludge. Sadly.

Disclaimer: #undef FLAME

	-Kristian.