Path: utzoo!utgpu!water!watmath!clyde!rutgers!husc6!endor!olson
From: olson@endor.harvard.edu (Eric K. Olson)
Newsgroups: comp.sys.mac
Subject: Re: QuickerDraw
Message-ID: <3991@husc6.harvard.edu>
Date: 5 Feb 88 13:58:48 GMT
References: <801@PT.CS.CMU.EDU>
Sender: news@husc6.harvard.edu
Reply-To: olson@endor.UUCP (Eric K. Olson)
Organization: Lexington Software Design
Lines: 21

In a recent article Mike Blackwell writes:
>The way I understand it, Hertzfeld made the remarkable discovery that when
>you're in 8-bit mode, you never have to check if you need to do bit shifts,

In early Mac II documentation, there are references to 16 and 32 bit modes.
It's a pity these were eliminated, since the 24-bit cards now becoming
available have a painful programming interface...

Then again, a full 16-bit color lookup table would be about 524K.  A 32-bit
one would be about 34 Gigabytes-- perhaps these resolutions were never
intended to be used with color-lookup tables.

The same document referred to 1-1-1, 2-2-2, 4-4-4, and 8-8-8 chunky-planar
pixel organizations (the 8-8-8 would have been perfect for the OpCode or
SuperMac 24-bit cards).

-Eric


Eric K. Olson     olson@endor.harvard.edu     harvard!endor!olson     D0760
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