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FrameThrower vs CAD Buffer II for XL1200 color graphics?

    Date: Wed, 14 Nov 90 11:06 PST

    The main speedup that user programs won't get completely for free is
    if the program was previously "speeded up" by pre-drawing into arrays
    and then bitblting the result to the screen.  The customer will probably
    have to modify code that does that to arrange for the bitmaps to be 
    resident on the framethrower instead of in lisp memory, or else the 
    bitblt's will have to be done by lisp, and so he'll get "only" a factor
    of 3 speedup.

It may be worth mentioning that the same is true of the embedding Ivory
architectures (the MacIvory and the UXn00S).

See, for instance, "Using Off-Screen Bitmaps" in the MacIvory
documentation and "Off-Screen Bitmaps in the Genera X Client" in the
UX400 documentation.

It might even be that the techniques described there (which are the same
for both, and which work with minimal additional overhead on the
standalone architectures) also manage to work with the Framethrower.