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From: jack@Taffy.rice.edu (Jack W. Howarth)
Newsgroups: comp.sys.mac.programmer,comp.sys.mac.misc
Subject: Re: ROM in RAM
Message-ID: <1990Nov1.034523.28025@rice.edu>
Date: 1 Nov 90 03:45:23 GMT
References: <1990Oct31.084937.28930@world.std.com> <1990Oct31.171449.26235@midway.uchicago.edu> <1990Oct31.234943.29428@world.std.com>
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The main use for copying the ROMs into RAM so far has been to allow the
accelerators for the Plus/SE to execute the ROM calls on a high speed
32 bit data/instruction bus. It is just as easily done for the SE/30 but
would not serve much of a purpose as the SE/30 already has taken the video
RAM and separated from the main RAM so that no clock cycles are needed for
the display to be refreshed (unlike the SE and Plus...)
                       Jack