Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!ogicse!milton!stevep
From: stevep@wrq.com (Steve Poole)
Newsgroups: comp.sys.mac.programmer
Subject: Mac II, IIci video speed
Message-ID: <1991Jun18.003913.14422@milton.u.washington.edu>
Date: 18 Jun 91 00:39:13 GMT
Sender: news@milton.u.washington.edu (News)
Organization: Walker Richer & Quinn, Inc., Seattle, WA
Lines: 22
Originator: stevep@elmer.wrq.com

Perhaps someone can explain a couple of Mac II vs Mac IIci video issues.

First, I notice the IIci is tremendously faster when loading a startup
screen.  Is this due to ROM changes?  The II doesn't do any disk access
while loading (none audible, at least) so it wouldn't seem to be a bus
related/frame buffer location issue.

Second, I have simple animation application that performs a CopyBits()
between calls to WaitNextEvent().  The II is far and away faster than the
IIci.  I'd guess it's a factor of 3 or better.  Putting the animation
window onto a monitor using a NuBus video card makes no difference.

Both machines are running System 7.  The II has a SuperMac 24-bit card
and an Apple 8-bit card.  The ci has the onboard video and an Apple
8-bit card.  The only other difference in hardware is an Ethernet card 
on the ci.  Same system extensions aside from the network.  Is this related
to the ci's integrated video in some way?  Thanks for any thoughts.

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