Pci Sparse I/O Space Address Translation (Region A, Lower 32Mb); Pci Sparse I/O Space Address Translation (Region B, Higher Area) - DEC AlphaPC 164LX Technical Reference Manual

PCI Sparse I/O Space
Figure A–12 PCI Sparse I/O Space Address Translation (Region A, Lower 32MB)
21164 Address
39 38 35 34 33 32 31 30 29 08 07 06 05 04 03 02 00
SBZ
1 1 0 1 1 0
int4_valid
21164
4 3
Length in Bytes
Byte Offset
31 25 24 03 02 01 00
0 0
0 0 0 0 0 0 0
PCI Address
LJ-04268.AI4
Figure A–13 PCI Sparse I/O Space Address Translation (Region B, Higher Area)
21164 Address
39 38 35 34 33 32 31 30 29 08 07 06 05 04 03 02 00
SBZ
1 0 1 1 1
1
int4_valid
21164
HAE_IO CSR
31 25 24
4 3
Length in Bytes
Byte Offset
31 25 24 03 02 01 00
0 0
PCI Address
LJ04269A.AI4
22 January 1998 – Subject To Change System Address Space
A–25