Int 2C Fn 000A  P - Cloaking - Get Base Address Of Gdt Selector            [m]

   AX = 000Ah
   SI = selector

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

Note:  this function was first introduced with RM386 (RAM-MAN/386) v6.00, the
     memory manager included in Helix Software's Netroom

See Also: AX=0000h,AX=0002h,AX=000Bh