MVME5100 Single Board Computer Programmer's Reference Guide

Registers
CONFIG_DATA Register
The description of the CONFIG_DATA register is also presented in three
perspectives; from the PCI bus, from the PPC bus in Big Endian mode, and
from the PPC bus in Little Endian mode. Note that the view from the PCI
bus is purely conceptual, since there is no way to access the
CONFIG_DATA register from the PCI bus. Conceptual perspective from
the PCI bus:
Offset $CFF $CFE $CFD $CFC
Bit 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
Perspective from the PPC bus in Big Endian mode:
1
8
Perspective from the PPC bus in Little Endian mode:
http://www.motorola.com/computer/literature 2-109
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
Name CONFIG_DATA
Data ‘D’ Data ‘C’ Data ‘B’ Data ‘A’
Operation R/W R/W R/W R/W
Reset n/a n/a n/a n/a
Offset $CFC $CFD $CFE $CFF
Bit (DL)
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
Name CONFIG_DATA
Data ‘A’ Data ‘B’ Data ‘C’ Data ‘D’
Operation R/W R/W R/W R/W
Reset n/a n/a n/a n/a
Offset $CF8 $CF9 $CFA $CFB
Bit (DH)
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
Name CONFIG_DATA
Data ‘D’ Data ‘C’ Data ‘B’ Data ‘A’
Operation R/W R/W R/W R/W
Reset n/a n/a n/a n/a
2