Int 15H [PS/2] Function C2H (194) Subfunction 05H Initialize pointing device interface

Sets the data package size for the system's mouse or other pointing device, and initializes the resolution, sampling rate, and scaling to their default values.

Call with:

AH = C2H

AL = 05H

BH = data package size in bytes (1—8)

Returns:

If function successful

Carry flag = clear

AH = 00H

If function unsuccessful

Carry flag = set

AH = status (see Int 15H Function C2H Subfunction 00H)

Note:

After this operation, the state of the pointing device is as follows:

disabled;

sample rate at 100 reports per second;

resolution at 4 counts per millimeter;

and scaling at 1 to 1.