Specifications

118 AMD Geode™ GeodeROM Functional Specification
System Services
32087C
12.1.3.14 Subfunction 0Dh - Enable/Disable Device Power Management
Description:
Passed:
Returns:
Related Functions:
None.
Parameter Description
AH 53h = APM
AL 0Dh = APM function code
BX Power device ID:
0001h = All devices power managed by APM BIOS
01xxh
1
= Display
02xxh = Secondary storage
03xxh = Parallel ports
04xxh = Serial ports
05xxh = Network adapters
06xxh = PCMCIA sockets
E000h-EFFFH = OEM defined power device IDs
All other values reserved
1. xxh = Unit number (0 based). Unit number of FFh means all devices in this class.
CX Function code:
0000h = Disable power management
0001h = Enable power management
Parameter Description
If function is successful:
CF 0 = Successful connection
If function is unsuccessful:
CF 1 = Carry flag set on error
AH Error code:
01h = Power management functionality disabled
03h = Interface not connected
09h = Unrecognized device ID