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Z80 Datasheet(PDF) 193 Page - Zilog, Inc.

Part # Z80
Description  Z80 CPU PERIPHERALS
PDF  330 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z80 Datasheet(HTML) 193 Page - Zilog, Inc.

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7UGT /CPWCN
UM008101-0601
Direct Memory Access

Read Register Bit Functions
Figure 83.
Read Register 0 through 6 Bit Functions
D7 D6 D5 D4 D3 D2 D1 D0
Status Byte
XX
1 = DMA Operation has Occurred
0 = Ready Active
0 = Interrupt Pending
0 = Match Found
0 = End-of-Block
Byte Counter (Low Byte)
Read Register 1
Byte Counter (High Byte)
Read Register 2
Port A Address Counter (Low Byte)
Read Register 3
Port A Address Counter (High Byte)
Read Register 4
Port B Address Counter (Low Byte)
Read Register 5
Port B Address Counter (High Byte)
Read Register 6



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