🚀 go-pugleaf

In article <19160@usc.edu> addison@pollux.usc.edu (Richard Addison) writes:
>In article <63241@linus.UUCP> rachamp@mbunix (Champeaux) writes:
>>The minimum loop required for transferring words from GVP's onboard buffer to
>>main memory is the following:
>>
>>loop:	move  (a0)+,(a1)+	(24 clock cycles)
>>	dbra  d0,loop		(18 clock cycles)
>
>Try again.  This is an obvious way of doing it, but it is not the fastest.
>
>Richard Addison

	Well, assuming you have the registers available and the move is
a multiple of 12 longwords, how about this:

loop:	movem.l	(a0)+,d1-d7/a2-a6
	movem.l	d1-d7/a2-a6,(a1)+
	dbra	d0,loop

	Won't give you loop mode on the 68010, but it won't matter. You
get 24 words moved for each 6 words of instruction fetch.
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