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53C810

PCI-SCSI I/O Processor

Unspecified 

Chapter Five

Operating Registers

PREUMINARY

Table 5-1. Operating Register Addresses and Descriptions (Continued)

Memory

or 1/0

20

21

22

23

24-26

27

28-2B

2C-2F

30-33

34-37

38

39

3A

3B

3C-3F

40

41

42

43

44

45

46

47

48

49

4A

4B

4C

4D

4E

4F

50

51-53

54

55-57

58

59-5B

5C-5F

Config

MemJl/O

AO

Al

A2

A3

A4-A6

A7

A8-AB

AC-AF

BO-B3

B4-B7

B8

B9

BA

BB

BC-BF

CO

Cl

C2

C3

C4

C5

C6

C7

C8

C9

CA

C7

CC

CD

CE

CF

DO

DI-D3

D4

D5-D7

D8

D9-DB

DC-DF

Readl

Write

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

RJW

R

RJW

, RJW

R

R

RJW

RJW

RJW

RJW

RJW

RJW

R

R

RJW

RJW

R

RJW

R

RJW

Label

DFIFO

CTEST4

CTEST5

CTEST6

DBC

DCMD

DNAD

DSP

DSPS

SCRATCH A

DMODE

DIEN

DWT

DCNIL

ADDER

SIENO

SIENI

SISTO

SISTI

SLPAR

Reserved

MACNIL

GPCNTL

STIMEO

STIMEI

RESPID

Reserved

STESTO

STESTI

STEST2

STEST3

SIDL

Reserved

SODL

Reserved

SBDL

. Reserved

SCRATCHB

Description

DMAFIFO

Chip Test 4

Chip Test 5

Chip Test 6

DMA Byte Counter

DMACommand

DMA Next Address for Data

DMA SCRIPTS Pointer

DMA SCRIPTS Pointer Save

General Purpose Scratch

Pad A

DMAMode

DMA Interrupt Enable

DMA Watchdog Timer

DMAControl

Swn output ofintemal adder

SCSI Interrupt Enable 0 .

SCSI Interrupt Enable 1

SCSI Interrupt Status 0

SCSI Interrupt Status 1

SCSI Longitudinal Parity

Memory Access Control

General Purpose Control

SCSI Timer 0

SCSI Timer 1-

Response ID

SCSI Test 0

SCSI Test 1

SCSI Test 2

SCSI Test 3

SCSI Input Data Latch

SCSI Output Data Latch

SCSI Bus Data Lines

General Purpose Scratch

Pad B

5-2

NCR 53C81 0 Data Manual

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