Int 31 Fn FF0B  P - Causeway - "getmem" - Allocate Block Of Memory         [E]

   AX = FF0Bh
   CX:DX = size in bytes (FFFFh:FFFFh to get size of largest available)

Return: CF clear if successful
       BX = selector for accessing block if requested size not FFFFh:FFFFh
       CX:DX = size of largest available block if requested FFFFh:FFFFh
   CF set on error

See Also: AX=FF0Ch,AX=FF0Dh,AX=FF0Fh,AX=FF10h,AX=FF2Ch