Registers
http://www.motorola.com/computer/literature 2-43
2
PCI Slave Address (0,1,2 and 3) Registers
To initiate an PPC cycle from the PCI bus the PCI address must be greater
than or equal to the START field and less than or equal to the END field.
START Start Address. This field determines the start address of a
particular memory area on the PCI bus which will be used to access PPC
bus resources. The value of this field will be compared with the upper 16
bits of the incoming PCI address.
END End Address. This field determines the end address of a particular
memory area on the PCI bus which will be used to access PPC bus
resources. The value of this field will be compared with the upper 16 bits
of the incoming PCI address.
Offset PSADD0 - $80
PSADD1 - $88
PSADD2 - $90
PSADD3 - $98
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
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Name PSADDx
START END
Operation R/W R/W
Reset $0000 $0000