Steven Seagal wrote:- Blitter:
In blit mode, the blitter can interrupt an operation between read and write.
The CPU can surrender bus control during an instruction.
Steem emulates this, but it's not 100% accurate.
Cyprian wrote:I have a few other tests, one of them shows that the CPU can easily delay the BLiTTER in HOG mode - that doesn't work in Steem
Code: Select all
move.w d6,(a3) ; red to $FFFF8240 8 CPU cycles / 2 bus cycles
move.w d3,(a3) ; white to $FFFF8240 8 CPU cycles / 2 bus cycles
move.l D6,D7 4 CPU cycles / 1 bus cycle
divs.w D5,D7 144 CPU cycles / 1 bus cycle
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