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        Start new application in new process

        Entry:
          AX = 102Ch
          ES:DI -> contents of .PIF/.DVP file (see below)
          BX = size of .PIF/.DVP info

        Return:
          BX = segment of object handle for new task
             0000h on error

        Format of .PIF/.DVP file:

        Offset  Size    Description
         00h    WORD    reserved (0)
         02h 30 BYTEs   program title (blank-padded)
         20h    WORD    maximum memory to allocate to partition in K
         22h    WORD    minimum memory required in K
         24h 64 BYTEs   ASCIZ program pathname
         64h    BYTE    default drive letter ('A',...)
         65h 64 BYTEs   ASCIZ default directory name
         A5h 64 BYTEs   ASCIZ program parameters
         E5h    BYTE    initial screen mode (0-7)
         E6h    BYTE    number of text pages used
         E7h    BYTE    number of first interrupt to save
         E8h    BYTE    number of last interrupt to save
         E9h    BYTE    rows in virtual screen buffer
         EAh    BYTE    columns in virtual screen buffer
         EBh    BYTE    initial window position, row
         ECh    BYTE    initial window position, column
         EDh    WORD    system memory in K
         EFh 64 BYTEs   ASCIZ shared program name
        12Fh 64 BYTEs   ASCIZ shared program data file
        16Fh    BYTE    flags1
                        bit 7: writes text directly to screen
                        bit 6: runs in foreground only
                        bit 5: uses math coprocessor
                        bit 4: accesses system keyboard buffer directly
                        bits 3-1: reserved (0)
                        bit 0: swappable
        170h    BYTE    flags2
                        bit 6: uses command-line parameters in field at A5h
                        bit 5: swaps interrupt vectors
        ---information unique to .DVP files---
        171h  2 BYTEs   keys to use on open menu
        173h    WORD    size of script buffer in bytes
        175h    WORD    automatically give up CPU after this many tests for keyboard
                        input in one clock tick (0 = never)
        177h    BYTE    nonzero = "uses own colors"
        178h    BYTE    nonzero if application swappable
        179h  3 BYTEs   reserved (0)
        17Ch    BYTE    nonzero to automatically close on exit
        17Dh    BYTE    nonzero if copy-protect floppy is required
        ---information unique to DESQview 2.0+---
        17Eh    BYTE    .DVP version number
                        00h DESQview 1.2+
                        01h DESQview 2.0+
                        02h DESQview 2.2+
        17Fh    BYTE    reserved (0)
        180h    BYTE    initial number of rows in physical window
        181h    BYTE    initial number of columns in physical window
        182h    WORD    maximum expanded memory to allow, in K
        184h    BYTE    flags3
                        bit 7: automatically assign window position
                        bit 5: maximum memory value has been specified
                        bit 4: disallow "Close" command
                        bit 3: foreground-only when doing graphics
                        bit 2: don't virtualize
        185h    BYTE    keyboard conflict level (0-4)
        186h    BYTE    number of graphics pages used
        187h    WORD    extra system memory size
        189h    BYTE    initial screen mode (FFh = default)
        ---information unique to DESQview 2.2+---
        18Ah    BYTE    serial port usage
                        FFh uses all serial ports
                        00h no serial ports
                        01h only COM1
                        02h only COM2
        18Bh    BYTE    flags4
                        bit 7: automatically close application on exit if .COM or .EXE
                                specified
                        bit 6: swappable if not using serial ports
                        bit 3: virtualize text
                        bit 2: virtualize graphics
                        bit 1: share CPU when foreground
                        bit 0: share EGA when foreground and zoomed
        18Ch    BYTE    protection level for 386 machines
        18Dh 19 BYTEs   reserved (0)