Int 15/AX=BA22h

AX = BA22h

Return:
CF clear if successful
BL = standy duration in minutes (01h-0Fh), or 00h if disabled
CF set on error (function not supported)

Note: The actual timeout with a GD6205 controller is ((N*64)-32) seconds, instead of (N*60) seconds as documented.

See Also: AX=BA20h - AX=BA21h