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- Newsgroups: alt.sys.amiga.demos
- Path: sparky!uunet!psinntp!viper!news
- From: brett@visix.com (Brett Bourbin)
- Subject: Re: Demo Utils
- Sender: news@visix.com
- Message-ID: <Bz3roB.ACx@visix.com>
- Date: Fri, 11 Dec 1992 16:12:10 GMT
- Distribution: inet
- Reply-To: brett@visix.com
- References: <OAHVENLA.92Dec8201145@lk-hp-4.hut.fi>
- Organization: Visix Software, Reston, Virginia
- Lines: 23
-
- In article <OAHVENLA.92Dec8201145@lk-hp-4.hut.fi>
- oahvenla@snakemail.hut.fi (Osma Ahvenlampi) writes:
- > tst.b $dff002 ;necessary to give the chipset some time to update
- registers
- > loop:
- > btst.b #6,$dff002
- > bne loop
- > rts
- >
- > I checked this two hours ago, it's the correct way.
- > This will work on the old and ECS chipsets, what AGA does I have no
- idea.
- > It's not too difficult to check it, though, I could do it, and I have
- not
- > coded for 2 years.. And back then I was terribly bad.
-
- While this is not wrong, it is not the best thing to do (to take in
- account the different CHIP bugs). I have NOPs in my check, along with TSTs
- on a a CIA register (so I don't have to go on the chip memory bus).
- -- __
- Brett Bourbin \ / /(_ /\/ 11440 Commerce Park Drive
- brett@visix.com \/ / __)/ /\ Reston, Virginia 22091
- ..uupsi!visix!brett Software Inc 703.758.8230
-