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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


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)