INT 6A U - Super-TCP DOS TSR Kernel v3.57 - ???
        AX = 0001h
        BH = function number
            01h ???
                DS:SI -> ??? 24-byte record1 (see below)
                ES:DI -> buffer containing ???
            02h ???
                DS:SI -> ??? 18-byte record2 (see below)
                ES:DI -> buffer containing ???
            04h ???
                BL = subfunction
                    01h
                        DS:SI -> ??? 28-byte record3 (see below)
                        ES:DI -> buffer containing ???
                    02h
                        DS:SI -> ??? 28-byte record3 (see below)
                        ES:DI -> buffer containing ???
                    03h
                        DS:SI -> ??? 28-byte record3 (see below)
                    else Return: AX = 0005h
            05h ???
                DS:SI -> ??? 20-byte record4 (see below)
                ES:DI -> buffer containing ???
            06h ???
                BL = subfunction
                    01h
                        DS:SI -> ??? 40-byte record5 (see below)
                    02h
                        DS:SI -> ??? 20-byte record6 (see below)
                        ES:DI -> ???
                    03h
                        DS:SI -> ??? 20-byte record6 (see below)
                    04h
                        DS:SI -> ??? 46-byte record7 (see below)
                    else Return: AX = 0005h
            11h ???
                DS:SI -> ??? 28-byte record8 (see below)
                ES:DI -> ???
Return: AX = function status
            0000h successful
            0005h unsupported function
            000Ah out of memory
SeeAlso: AX=0000h

Format of record1:
Offset  Size    Description
 00h  4 BYTEs   ???
 04h    WORD    size of ES:DI buffer
 06h 18 BYTEs   ???

Format of record2:
Offset  Size    Description
 00h  4 BYTEs   ???
 04h    WORD    size of ES:DI buffer
 06h 12 BYTEs   ???

Format of record3:
Offset  Size    Description
 00h  2 BYTEs   ???
 02h    WORD    ???
 04h    WORD    size of ES:DI buffer
 06h    WORD    ???
 08h    WORD    operation number (for function 0401h)
 0Ah    DWORD   -> ???
 0Eh    WORD    (return) ???
 10h 12 BYTEs   ???

Format of record4:
Offset  Size    Description
 00h  4 BYTEs   ???
 04h    WORD    size of ES:DI buffer
 06h 14 BYTEs   ???

Format of record5:
Offset  Size    Description
 00h    BYTE    operation??? (00h-07h)
 01h    BYTE    ???
 02h    WORD    (return) ???
 04h    DWORD   -> ???
 08h  4 BYTEs   ???
 0Ch    DWORD   -> ??? or 0000h:0000h
 10h 16 BYTEs   ???
 20h    DWORD   ???
 24h  4 BYTEs   ???

Format of record6:
Offset  Size    Description
 00h  4 BYTEs   ???
 04h    WORD    size of ES:DI buffer
 06h 14 BYTEs   ???

Format of record7:
Offset  Size    Description
 00h    WORD    ???
 02h    WORD    ???
 04h    WORD    ???
 06h 40 BYTEs   ???

Format of record8:
Offset  Size    Description
 00h  4 BYTEs   ???
 04h    WORD    size of ES:DI buffer
 06h  6 BYTEs   ???
 0Ch    WORD    (return) ???
 0Eh    WORD    operation??? (01h-03h)
 10h 12 BYTEs   ???

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