Int 2F Fn 43E2  - Dos Protected Mode Services (dpms) V1.0 - Enable/disabl  [m]

   AX = 43E2h
   BX = new state (0000h disable, 0001h enable)

Return: AX = 0000h if supported

Note:  this function should normally be called only by system software

See Also: AX=43E0h,AX=43E1h,AX=43E3h