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CK
DREQ
DRAK
Bus
cycle
DACK
CPU
CPU
CPU
CPU
DMA
C(R)
DMA
C
(R)
DMA
C(W)
1st sampling
2nd sampling
Note:
With cycle-steal and dual address operation, sampling timing is the same
whether DREQ detection is by level or by edge.
Figure 11.16 Cycle Steal, Dual Address, and Level Detection (Normal Operation)
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