Specifications

152 AMD Geode™ GeodeROM Functional Specification
System Services
32087C
12.1.10.27 Subfunction AAh - CPI Register Read
Description:
Read a Geode GX1 processor configuration register from the index/data pair at 22h/23h. Executing this interrupt has
no function on a Geode GX processor but will return success. See the AMD Geode™ GX1 Processor Data Book for a
list of configuration registers that may be read.
Passed:
Returns:
Related Functions:
None.
12.1.10.28 Subfunction ABh - CPU Register Write
Description:
Write a Geode GX1 processor configuration register from the index/data pair at 22h/23h. Executing this interrupt has
no function on a Geode GX processor but will return success. See the AMD Geode™ GX1 Processor Data Book for a
list of configuration registers that may be written.
Passed:
Returns:
Related Functions:
None.
Parameter Description
AX BEAAh
BX 4E53h (= ‘NS’)
CL Register to read
Parameter Description
AL Register contents
CF 0 = Success
1 = Failure
Parameter Description
AX BEABh
BX 4E53h (= ‘NS’)
CX Register to write
DL Data to write
Parameter Description
CF 0 = Success
1 = Failure