LSI 53C875A - Manual (Page 194)

4-102 Registers
Writes to the SFS register are unaffected. Clearing the
PCI Configuration Into Enable bit causes the SFS register
to return to normal operation.
Registers: 0xAC–0xAF
DSA Relative Selector (DRS)
Read/Write
DRS DSA Relative Selector [31:0]
Supplies the upper Dword of a 64-bit address during
table indirect fetches and Load and Store
Data Structure
Address (DSA) relative operations.
Registers: 0xB0–0xB3
Static Block Move Selector (SBMS)
Read/Write
SBMS Static Block Move Selector [31:0]
Supplies the upper Dword of a 64-bit address during
block move operations, reads or writes. This register is
static and will not be changed when a 64-bit direct BMOV
is used.
31 0
DRS
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
31 0
SBMS
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0