Motorola MVME2300 Series User Manual

Page 118

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2-48

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Raven PCI Bridge ASIC

2

All write operations to reserved registers will be treated as no-ops. That is,
the access will be completed normally on the bus and the data will be
discarded. Read accesses to reserved or unimplemented registers will be
completed normally and a data value of 0 returned.

The Raven PCI Configuration Register map appears in

Table 2-8

. The

Raven PCI I/O Register map appears in

Table 2-9

.

Table 2-8. Raven PCI Configuration Register Map

3
1

3
0

2
9

2
8

2
7

2
6

2
5

2
4

2
3

2
2

2
1

2
0

1
9

1
8

1
7

1
6

1
5

1
4

1
3

1
2

1
1

1
0 9 8 7 6 5 4 3 2 1 0

<--- Bit

DEVID

VENID

$00

PSTAT

PCOMM

$04

CLASS

REVID

$08

$0C

IOBASE

$10

MEMBASE

$14

$18 - $7F

PSADD0

$80

PSOFF0

PSATT0

$84

PSADD1

$88

PSOFF1

PSATT1

$8C

PSADD2

$90

PSOFF2

PSATT2

$94

PSADD3

$98

PSOFF3

PSATT3

$9C

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