Int 31 Fn FF2C  P - Causeway V1.3 - "getmemso" - Allocate Memory And Retu  [E]

   AX = FF2Ch
   CX:DX = block size in bytes

Return: CF clear if successful
      SI:DI = selector:offset of allocated memory
   CF set on error

Note:  unlike "GetMem" (AX=FF0Bh), this function will reuse selectors until a
     segment is full, rather than allocating a new selector for each
     memory block

See Also: AX=FF00h,AX=FF2Dh,AX=FF2Eh