Int 15/AX=530Ah

Advanced Power Management v1.0+ - GET POWER STATUS

AX = 530Ah
BX = device ID
0001h all devices power-managed by APM
80xxh specific battery unit number XXh (01h-FFh) (APM v1.2)

Return:
CF clear if successful
BH = AC line status
00h off-line
01h on-line
02h on backup power (APM v1.1)
FFh unknown
other reserved
BL = battery status (see #00476)
CH = battery flag (APM v1.1+) (see #00477)
CL = remaining battery life, percentage
00h-64h (0-100) percentage of full charge
FFh unknown
DX = remaining battery life, time (APM v1.1) (see #00478)
---if specific battery unit specified---
SI = number of battery units currently installed
CF set on error
AH = error code (09h,0Ah) (see #00473)

Notes: Should not be called from within a hardware interrupt handler to avoid reentrance problems. Supported in real mode (INT 15) and both 16-bit and 32-bit protected mode

(Table 00476) Values for APM v1.0+ battery status: 00h high 01h low 02h critical 03h charging FFh unknown other reserved

See Also: #00477 - #00478


Bitfields for APM v1.1+ battery flag:

Bit(s)  Description     (Table 00477)
0      high
1      low
2      critical
3      charging
4      selected battery not present (APM v1.2)
5-6    reserved (0)
7      no system battery

Note: All bits set (FFh) if unknown

See Also: #00476 - #00478


Bitfields for APM v1.1+ remaining battery life:

Bit(s)  Description     (Table 00478)
15     time units:
0=seconds, 1=minutes
14-0   battery life in minutes or seconds

Note: All bits set (FFFFh) if unknown

See Also: #00476 - #00477

Category: Power Management - Int 15h - A

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