Using the z80 dma with other processors, Figure 55. dma-sio environment – Zilog Z08470 User Manual
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Direct Memory Access
Figure 55.
DMA-SIO Environment
Using The Z80 DMA With Other Processors
The Z80 DMA offers great versatility and is a powerful alternative for
board designers. Because the DMA is designed as a member of the Z80
Family, it requires certain signals and bus characteristics, such as those of
+5V
+5V
SIO
RxCA
W/RDYA
W/RDYB
RxCB
TxCA
TxCB
CPU
DMA
DMA
INT
INT
INT
IEI
RDY
IEO
IEI
RDY
System
Buses
Common: A16–A0
D7–D0
CLK
INT
BUSREQ
M1
IORQ
MREQ
RD
WR
IEI
ZC/TO1
ZC/TO2
IEO
CTC
INT