ECE216H1 Lecture Notes - Lecture 30: Ope

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we can't Draw an exact line
we can only color pixels close to the lane
Bresenham'S Algorithm a
DX I12 ILIAHHH
by 514
error 12 5
for XIgy II2413 sett Kil 22x324oc 5
lit 2,1 3,2 4127 E3
draw pixelCsny l34O7
23
if error70 8h
yte 1
error ox
Port2isynchronizwithraatinion
The DMA controller is amemory mapped IN device
mThe Dutt controller continuously reads pixel values starting
at the address in this register
lionThc 5bat in the status register can be used to synchronize
with the trait timing
Cadegives
Lou Sture ope drn
Serves as arequest to theDMA
controller
swapthecontents of the frontorback
register
Does not updatebuffer until Gaffer
is finishedwiththe previousdrains
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