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Old 14 August 2018, 17:27   #50
deimos
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Join Date: Jul 2018
Location: Londonish / UK
Posts: 126
Quote:
Originally Posted by ovale View Post
@deimos, in your last test you are using EHB. Assuming you are on OCS, then this almost halves the memory access slots for the CPU. If you reference is starglider then use 4 bitplanes.
I have actually tested using 1, 2, 3, 4, 5 and 6 bit planes. The difference in speed is only in the horizontal line draw code and is pretty much exactly proportional to number of planes. There’s no dramatic difference between 5 and 6 planes, which I thought there would be. I don’t know if this is because I’ve got some fast memory, so the only access the CPU needs to chip memory is the actual drawing.

I should probably test with 6 planes being displayed but only drawing the ball to the first 3, and without fastmem.

Last edited by deimos; 14 August 2018 at 17:40.
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