1. Normally our P640N/P640NU card will use I/O Map in your system.

2. But WIN2000/XP/2003 system can only support 16 COM port in I/O map card.
   Only memory map card can support upto 64 COM port. In the other condition
   our WIN95/98/Me driver can only support in I/O map card. So user may need
   to exchange the 93C46 chip in P640N card and 93C56 chip in P640NU card
   for Memory Map usage or I/O Map usage.

3. In this diskette you have "ntcard10.nvr" file to be binary code of memory
   map 93C46 contents. "ntcard98.nvr" file is the contents of I/O map type
   93C46. "p640numm.nvr" file is for memory map of 93C56. "p640nuio.nvr"
   file is for I/O map of 94C56. When you need to change the contents of
   93C46 or 93C56, you can use dedicated file to program. Please keep in
   mind that 93C46 and 93C56 must be set in x16 mode to program.
   *****If user did not have programmer to re-program 93C46 and 93C56 chip.
   Please check with rayon@ms1.hinet.net for support. We have some method
   in DOS 6.0 system to re-program 93C46/93C56 without programmer.

4. For other OS's driver (include WIN NT ,WIN2000/XP , Linux)
   user can use Memory Map or I/O map. For SCO Openserver user need to
   use memory map only.

5. Following is the directory for each type of driver to be used.
  a)DOS system:
      1)The driver is in directory  a:\DOS
      2)The demo program is in directory a:\DOS\DEMO
Note: DOS system can only use I/O map.

  b)WIN95/98/Me system:
        1)The driver is in directory a:\WIN95
        2)The demo program is in directory a:\DEMO
Note: WIN95/98/Me system can only use I/O map.

  c)WIN NT system:
        1)The driver for I/O map is in directory a:\NT4.IO
        2)The driver for memory map is in directory a:\NT4.MEM
        3)The demo program is in directory a:\DEMO
Note: WIN NT system can support I/O or memory map.

  d)WIN2000/XP/2003 system:
        1)The driver is in directory a:\win2000
        2)The demo program is in directory a:\DEMO
Note: WIN2000 system can support I/O or memory map.
