Int 7A Fn 09  - Ibm 3270 Workstation Program Api - Presentation Space Ser  [I]

   AH = 09h
   BX = 8020h
   CX = 00FFh
   DX = ID of PCPSM
   AL = service
       01h define presentation space
       02h delete presentation space
       03h display presentation space
       04h position cursor in presentation space
       05h change default presentation space
   ES:DI -> control block

Return: ???