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From: ralphw@ius3.ius.cs.cmu.edu (Ralph Hyre)
Newsgroups: comp.sys.apple
Subject: Quad Hires? (was Re: Laser 128)
Message-ID: <4285@pt.cs.cmu.edu>
Date: 15 Feb 89 17:35:26 GMT
References: <8902120443.AA12071@wpi>
Organization: Carnegie-Mellon University, CS/RI
Lines: 17

In article <8902120443.AA12071@wpi> GREYELF@WPI.BITNET writes:
>I just figured out how to access the 520 x 384 quadruple hi-res mode on
>the Laser, has anyone figured out a way to use this mode for graphics
>programs?
Wouldn't it be 560x384?
How does this work?  Does the hardware flip between regular and alternate
display pages every 60 hz? (for a 30 hz interlaced display with some flicker,
depending on your monitor.)  Or do you have to write software (interrupt 
handlers & such) to do this?

$2000-$4000,$4000-$6000 Hex should be the regular and alternate Hires pages
in each 64K bank.
-- 
					- Ralph W. Hyre, Jr.
Internet: ralphw@{ius{3,2,1}.,}cs.cmu.edu    Phone:(412) CMU-BUGS
Amateur Packet Radio: N3FGW@W2XO, or c/o W3VC, CMU Radio Club, Pittsburgh, PA
"You can do what you want with my computer, but leave me alone!8-)"
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