Casio IT-2000W Technical Reference Manual page 187

Acquisition of Low Battery Voltage Status
An APM (Advanced Power Management) BIOS has been installed in this terminal. This function is
used to directly refer the hardware conditions which are translated into input signals for the APM
BIOS.
SYNTAX
int SYS_GetLBStatus();
INPUT
None
OUTPUT
b0
b1
b2
b3
b4 to b7
Reserved
LB1 event: Main battery voltage low.
LB2 event: Sub-battery voltage low.
LB3 event: Memory card battery voltage low.
Reserved
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