Z80 Datasheet, PDF (89/330 Pages) Zilog, Inc. – Z80 CPU PERIPHERALS

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System
Data
Bus
(8-Bit)
Control
Interrupt
and Bus
Priority
Logic
Pulse
Logic
BYTE
Counter
Internal Bus
Bus
Control
Logic
Control
and
Status
Registers
BYTE
Match
Logic
Port A
Address
Port B
Address
MUX
System
Data
Bus
(16-Bit)
Figure 29. Z80 DMA Block Diagram
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