Bbram/tod clock memory map, Bbram/tod clock memory map -41, Table 1-11. 53c710 scsi memory map -41 – Motorola MVME1X7P User Manual

Page 67: Table 1-11

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Memory Maps

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1-41

1

Note

Accesses may be 8-bit or 32-bit, but not 16-bit.

BBRAM/TOD Clock Memory Map

The M48T58 BBRAM (also called Non-Volatile RAM or NVRAM) is divided into
six areas as shown in

Table 1-12

. The first five areas are defined by software, while

the sixth area, the time-of-day (TOD) clock, is defined by the chip hardware. The
first area is reserved for user data. The second area is used by Motorola networking
software. The third area may be used by an operating system. The fourth area is

Table 1-11. 53C710 SCSI Memory Map

Base Address is $FFF47000

Big Endian

Mode

53C710 Register Address Map

SCRIPTs Mode and

Little Endian Mode

00

SIEN

SDID

SCNTL1

SCNTL0

00

04

SOCL

SODL

SXFER

SCID

04

08

SBCL

SBDL

SIDL

SFBR

08

0C

SSTAT2

SSTAT1

SSTAT0

DSTAT

0C

10

DSA

10

14

CTEST3

CTEST2

CTEST1

CTEST0

14

18

CTEST7

CTEST6

CTEST5

CTEST4

18

1C

TEMP

1C

20

LCRC

CTEST8

ISTAT

DFIFO

20

24

DCMD

DBC

24

28

DNAD

28

2C

DSP

2C

30

DSPS

30

34

SCRATCH

34

38

DCNTL

DWT

DIEN

DMODE

38

3C

ADDER

3C

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