Int 2C Fn 0004  P - Cloaking - Set Segment Access Mode                     [m]

   AX = 0004h
   SI = selector
   CL = new access mode byte (see #0428)

Return: CF clear if successful
   CF set on error
       AX = error code (see #2244)

Note:  this function was first introduced with RM386 (RAM-MAN/386) v6.00

See Also: AX=0000h,AX=0002h,AX=0003h,AX=0005h,INT 31/AX=0009h