INT 7F - Alloy NTNX (Slave), MW386 - GET USER PARAMETERS
        AH = 05h
        DX:DI -> buffer for user information record (see below)
Notes:  MW386 provides this function for backward compatibility only, and sets
          many of the fields to zero because they are meaningless under MW386
        this function has no effect when called by the host (user 0)

Format of user information record:
Offset  Size    Description
 00h    WORD    segment of video RAM
 02h    WORD    segment of secondary copy of video RAM
 04h    WORD    offset of screen update flag (see INT 10/AH=8Bh)
                flag nonzero if update needed
 06h    WORD    video NMI enable port
                (not used by MW386, set to 0000h)
 08h    WORD    video NMI disable port
                (not used by MW386, set to 0000h)
 0Ah    BYTE    processor type
                00h 8088
                01h V20
                02h 8086
                03h V30
                06h 80386
 0Bh    WORD    multitasking flag (00h = single tasking, 01h = multitasking)
                (not used by MW386, set to 0000h)
 0Dh    WORD    offset of terminal driver
                (not used by MW386, set to 0000h)
 0Fh    BYTE    port for console I/O
                (not used by MW386, set to 0000h)
 10h    WORD    offset of processor communication busy flag
                bit 7 set when slave communicating with host
 12h    WORD    pointer to FAR NX system call
                (not used by MW386, set to 0000h)
 14h    WORD    offset of 16-byte user configuration record (see AH=38h)
 16h    WORD    offset of command/status word
 18h    WORD    offset of screen valid flag (see INT 10/AH=93h)
                nonzero if screen must be repainted
 1Ah    WORD    offset of screen repaint flag
 1Ch    WORD    pointer to NEAR NX system call
                (not used by MW386, set to 0000h)
 1Eh    WORD    offset for intercept flags
                (not used by MW386, set to 0000h)
                intercept flag = FFh if MSDOS intercepts should be disabled
 20h    WORD    offset of terminal lock flag (see INT 10/AH=92h)
                lock flag = FFh if backgrnd screen updates should be suspended
 22h 26 BYTEs   reserved