Re: NOVA programming

From: Petr Stehlik <>
Date: Sun, 19 Apr 1998 12:11:18 +0100

On Thu, 16 Apr 1998 14:14:04 +0200, Jo Even Skarstein wrote:

JES>> JES>If you need to copy from/to the videoram, then move.l should be
JES>> JES>fastest.
JES>> Apparently this is much slower than Doug's c2p routines to super slow
JES>> 256-color mode ST-RAM. I don't get it.
JES>Neither do I :-) If the image you have in ST-RAM already is in the
JES>correct format (e.g. Nova 15bit), then nothing should be faster than a
JES>move.l-routine. Don't use movem on your AB though ;-)

The image is in 8bit, my NOVA is in 8 bit as well. However I have used
memcpy() in GCC, and now I guess that memcpy() uses movem, so that might
be the killer. I am going to write move.l (ax)+,(ay)+

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Received on sø. april 19 1998 - 13:22:00 CEST

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