Specifications
AMD Geode™ GeodeROM Functional Specification 149
System Services
32087C
12.1.10.21 Subfunction A4h - Get CPU Speed
Description:
Calculate and return the speed of the CPU.
Passed:
Returns:
Related Functions:
None.
12.1.10.22 Subfunction A5h - Check CMOS
Description:
Check for the presence of CMOS by writing test pattern to b[1:0] of the diagnostic byte.
Passed:
Returns:
Related Functions:
None.
Parameter Description
AX BEA4h
BX 4E53h (=’NS’)
Parameter Description
AX CPU Speed in MHz
CF 0 = Success
1 = Failure
Parameter Description
AX BEA5h
BX 4E53h (=’NS’)
Parameter Description
CF 0 = CMOS present
1 = CMOS absent