Int 16 Fn FFDD  U - Pc Tools V6.0+ Pcshell Api - Get Pcrun Parameters      [U]

   AX = FFDDh
   BX = 0009h

Return: CF clear if successful
       DS:SI -> list of pointers (see #0548)

Format of PC Tools PCShell returned pointer list:
Offset Size    Description (Table 0548)
 00h   WORD    offset of WORD containing ???
 02h   WORD    offset of name of program to execute
 04h   WORD    offset of 80-byte buffer for ???
 06h   WORD    offset of buffer for ??? (length in WORD preceding buffer)
 08h   WORD    offset of buffer for ??? (length in WORD preceding buffer)