View Single Post
Old 27 February 2019, 23:07   #4

phx's Avatar
Join Date: Nov 2009
Location: Herford / Germany
Posts: 1,566
Originally Posted by TEG View Post
Thanks for the modulo hint I had forgot about, but I don't get your 3*40. Isn't it 4*40 (4 bitplans in my example) ?
The modulo defines the number of bytes to skip in a plane, after each line. Usually the next line follows directly in memory (modulo=0), but with interleaved bitplanes you have to skip the lines of three other bitplanes to find the next line of your current plane.

Another question: on an Amiga with a 16 bits bus, is writing a byte or a word in the memory, have the same cost in term of cpu cycles and bus availability ?
Yes. That's why it is called 16-bit bus.
phx is offline  
Page generated in 0.04493 seconds with 11 queries