Casio IT-2000W manual Acquisition of Power Status, INT15h

Acquisition of Power Status

Application can acquire current power status by calling APM BIOS through the interrupt INT15h.

The following power statuses can be acquired by using the method.

AC line status

Battery status

Battery flag

￿Remaining battery life - percentage of charge Remaining battery life - time unites

The functions detailed below will acquire the power statuses stated above.

Acquisition of Power Status

INT15h

Input:
AH	= 53h
AL	= 0Ah
BX	= 0001h
Output:
If function successful:
Carry = 0
BH	= AC line status
	00h	Off-line
	01h	On-line
	02h	On backup power
	FFh	Unknown
	All other values are reserved.
BL	= Battery status
	00h	High
	01h	Low
	02h	Critical
	03h	Charging
	FFh	Unknown
	All other values are reserved.
CH =	Battery flag
	bit 0 = 1		High
	bit 1 = 1		Low
	bit 2 = 1		Critical
	bit 3 = 1		Charging
	bit 7 = 1 No system battery
	All other bits are reserved.
	FFh		Unknown
	All other values are reserved.
CL = Remaining battery life-percentage of charge
	0 to 100 : Percentage of the battery charging, 100 represents full
			charge in battery.
	FFh	: Unknown
	All other values are reserved.

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