Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!wuarchive!cs.utexas.edu!ut-emx!ccwf.cc.utexas.edu
From: daveh@ccwf.cc.utexas.edu (David H. Huang)
Newsgroups: comp.sys.apple2
Subject: Re: HIRES question
Message-ID: <43733@ut-emx.uucp>
Date: 5 Feb 91 14:38:25 GMT
References: <452@generic.UUCP>
Sender: news@ut-emx.uucp
Reply-To: daveh@ccwf.cc.utexas.edu (David H. Huang)
Organization: The University of Texas at Austin
Lines: 32

In article <452@generic.UUCP> marekp@pnet91.cts.com (Marek Pawlowski) writes:
>As a follow-up question to that, could someone list all the important memor
>locations for graphic page flipping.  Such as the ones to diplay page x, and
>draw on page x, etc?

To select graphics screen      => -16304
To select text screen          => -16303
To select full screen graphics => -16302
To select graphics/text        => -16301
To select page 1               => -16300
To select page 2               => -16299
To select lo-res               => -16298
To select hi-res               => -16297

and as other people have pointed out, POKE 230,32  to draw on page 1,
POKE 230,64 to draw on page 2.

Those softswitches are from memory, but I think I got them all right. You can
do the conversion to hex yourself if you want...

>/* Marek Pawlowski, marekp@{generic|pnet91|bkj386|torag|aunix}.uucp  [CONT] */
>/* {albert|wookumz|apple-gunkies|pogo|churchy|geech|spiff|mole}.ai.mit.edu  */
>/* President, Intelligent Twist Software, 250 Harding Blvd, PO BOX 32017    */
>/* Richmond Hill, Ontario, L4C 9M7, CANADA.  An ideal route is as follows:  */
>/* { Ph: (416) 884-4501 4-8pm EDT } generic!pnet91!marekp@zoo.toronto.edu   */


-- 
David Huang                                 |
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