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From: billium@pro-charlotte.cts.com (Bill Blanke)
Newsgroups: comp.sys.amiga
Subject: CMI 68000 2x
Message-ID: <3372@crash.cts.com>
Date: 28 Aug 88 21:03:20 GMT
Sender: news@crash.cts.com
Lines: 30

I was flipping through a magazine and saw an ad for CMI's processor
accelerator. Its supposed to double the clock speed of the Amigas
processor from 7.12 to 14.3 MHz. I've got a few questions about it.

(1) Does anybody have this on there Amiga? Has anybody seen it?
(2) How compatible is it with Amiga software. I remember someone
    was saying how it was incompatible with dongles. Thats no problem
    for me though since none of my software is dongled.
(3) Does the 2x speed increase affect games. I guess what I'm asking
    is if Amiga games are timer based (wait 1 second and then do this)
    or processor cycle based (execute these instructions as fast as
    you can, then do this-I would have to deal with an arkanoids ball
    flighing around twice as fast as normal!). If all are timer based
    (hopefully) does this mean sometimes sluggish games (like Obliterator)
    would perk up and move more smoothly, but still remain at their
    current speed?
    If they are cycle based is there a way to revert back to 7.12 Mhz,
    preferably through a hardware switch?
(4) What kind of speed increase could I expect over the normal 68000 with
    ray tracing programs, general multi-tasking, Desktop Publishing
    programs (not moving memory-blitter does that-I mean all the reflowing
    of text and all the recalculating the program has to do) and
    Transformer?
(5) How much better would the speed increase be with the math coprocessor?
    Would the coprocessor be available for all programs or just those
    that are writtin to use it? Would the 1.3 math libraries take care of
    those that aren't?

If the overall speed increase is good I'd buy one. $200 is a great deal
considering $$$ for 68020,30....