Transparent interrupt and function support
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 BIOS Interrupts

 The following BIOS interrupt calls are handled transparently:

    INT 10h  Video          Functions 00h -1Ch
    INT 11h  Equipment list
    INT 12h  Get mem size
    INT 13h  Disk           Functions 00h -19h
    INT 14h  RS232          Functions 00h -05h
    INT 16h  Keyboard       Functions 00h -12h
    INT 17h  Printer        Functions 00h -02h
    INT 1Ah  Clock
    INT 1Bh  Control Break
    INT 1Ch  User Timer Tick
    INT 33h  Mouse
    INT 7Ah  IPX / SPX

 DOS Interrupts

 The following DOS interrupt calls are handled transparently :

    INT 21h  Functions 00h - 6ch except :
       0FH   Open file (fcb)
       10H   Close file (fcb)
       14H   Sequential disk file read
       15H   Sequential disk file write
       16H   Create file
       21H   Random disk record read
       22H   Random disk record write
       23H   Get file size
       24H   Set random record field
       27H   Random block read
       28H   Random block write
       31H   TSR
       5DH   Miscellaneous DOS internal functions
       5EH   Microsoft Networks functions 3 and above
       5FH   Network functions 6 and above
       63H   Asian 2 byte character support
    INT 23h  Control C
    INT 25h  Absolute DOS Read
    INT 26h  Absolute DOS Write