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Article #39525Attn Gurus: Changing Rez without the Bios?
From: David M. Baggett
Date: Thu, 14 Dec 1989 21:00
Date: Thu, 14 Dec 1989 21:00
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For some rather complicated reasons I need to change system resolution without using the Bios, Xbios, etc. This code MUST be legal for ALL versions of TOS from now til the end of time. I can get the _screen_ to change rez, but I can't get AES, etc. to fully recognize the change. I managed to set bit planes correctly by changing the line A variable at base + 0, but it's still confused about the width of the screen in text columns, etc. Does anybody know what Line A variables I need to change to do this? Is there an offical Atari-sanctioned, guaranteed-not-to-break-ever way of pulling this off? (Please post replies to the net as it would be interesting to finally see a techincal discussion on this newsgroup intsead of flames!) Thanks, Dave Baggett (mail to dmb@TIS.COM)
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<8912142100.AA13815@cscwam.umd.edu>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!ucbvax!wam.umd.edu!dmbShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!sun-barr!decwrl!ucbvax!wam.umd.edu!dmb From: dmb@wam.umd.edu (David M. Baggett) Newsgroups: comp.sys.atari.st Subject: Attn Gurus: Changing Rez without the Bios? Message-ID: <8912142100.AA13815@cscwam.umd.edu> Date: 14 Dec 89 21:00:25 GMT Sender: usenet@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 20