Article View: comp.sys.mac
Article #7487Re: MacDraw II Problems ...
From: John R. Gersh
Date: Thu, 09 Nov 1989 14:54
Date: Thu, 09 Nov 1989 14:54
39 lines
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2416 bytes
In article <421@tci.bell-atl.com> Matt Kingman writes:
>
>Here's an intersting twist. I have a IIx with 4MB and have had no problems
>running MacDraw II. The other day I added an second monitor to the system
>and I now get the "Not enough memory to open a new document" error when I'm
>running with multifinder. With finder, I can run with 1 or 2 monitors.
>Weird......
>
MacDraw II reserves a screenful of memory for a pixel map of each open
document. On a Plus or SE with a 512 by 342 by one-bit (B&W) screen,
that's only about 22K bytes; on an Apple 13" color monitor, with 8-bit
color selected, that's 640 by 480 by 8 bits, or about 300K bytes per
open document. A typical 19" color monitor, again at 8-bit color,
will make MacDraw II need almost 800K bytes per open document.
There are two ways to deal with this - (1) Increase the application
memory allocation for MacDraw II under Multifinder. (2) Reduce the number
of colors used by the monitors (in the Monitor cdev); most MacDraw work is B&W
anyway, and it actually uses at most 8 colors.
Interestingly, I posted a note on this subject here about a year ago,
just after MacDraw II came out. I had an immediate e-mail reply from a
Claris engineer on the subject. We agreed that the MacDraw manual was
inadequate in discussing this memory requirement topic. The manual
addendum that came out with MacDraw II v 1.1 has a full explanation of
the situation. Nice going Claris!!
- John Gersh
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<3729@aplcen.apl.jhu.edu>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!aplvax.jhuapl.edu!gershReferences:
<6167@tank.uchicago.edu> <421@tci.bell-atl.com>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!aplvax.jhuapl.edu!gersh From: gersh@aplvax.jhuapl.edu (John R. Gersh) Newsgroups: comp.sys.mac Subject: Re: MacDraw II Problems ... Summary: Need a screenful of memory/document Keywords: MacDraw II, Bugs ? Message-ID: <3729@aplcen.apl.jhu.edu> Date: 9 Nov 89 14:54:45 GMT References: <6167@tank.uchicago.edu> <421@tci.bell-atl.com> Sender: news@aplcen.apl.jhu.edu Reply-To: gersh@aplvax.jhuapl.edu.UUCP (John R. Gersh) Distribution: usa Organization: The Johns Hopkins University Applied Physics Laboratory Lines: 39