Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!visix!news From: brett@visix.com (Brett Bourbin) Newsgroups: comp.sys.amiga.programmer Subject: Re: Short Hello World Message-ID: <1991May13.220559.11706@visix.com> Date: 13 May 91 22:05:59 GMT References: <1804@tardis.Tymnet.COM> <1991May7.001146.1830@cinnet.com> <1991May10.103117.4270@cs.umu.se> <1991May11.072139.781@starnet.uucp> Sender: news@visix.com Reply-To: brett@visix.com Organization: Visix Software Inc., Reston, VA Lines: 18 In article , dillon@overload.Berkeley.CA.US (Matthew Dillon) writes: |> Uh, actually, you don't want to use CLR either if you can help it |> because CLR always *reads* the ea before writing a 0 to it. This |> true all the way through 020's at least. Doesn't this also introduce problems with the custom chips, since you can say something like "clear the COPPER 1 STROBE" with the CLR.W cop1xxx(AX) command. This would read the register before writing the zero. I am not sure about the COPPER STROBE, but I know some write-only registers get very picky when you try to read them. |> Matthew Dillon dillon@Overload.Berkeley.CA.US -- __ Brett Bourbin \ / /(_ /\/ 11440 Commerce Park Drive ..!uunet!visix!brett \/ / __)/ /\ Reston, Virginia 22091 brett@visix.com Software Inc (703) 758-2733