INT 16 - PC Tools v6.0+ PCShell API - GET PCRUN PARAMETERS
        AX = FFDDh
        BX = 0009h
Return: CF clear if successful
            DS:SI -> list of pointers (see below)

Format of returned pointer list:
Offset  Size    Description
 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)