Int 10H [VGA] Function 12H (18) Subfunction 34H (52) Enable/disable cursor emulation

Enables or disables cursor emulation for the currently active display. When cursor emulation is enabled, the ROM BIOS automatically remaps Int 10H Function 01H cursor starting and ending lines for the current character cell dimensions.

Call with:

AH = 12H

AL = 00H to enable cursor emulation

01H to disable cursor emulation

BL = 34H

Returns:

If function supported

AL = 12H