Mapping Multi-I/O Card to "Legacy" ports ?

Oct 03, 2006 4 Replies
A

Hi,



I have a PC on which the on-board parallel port has blown. I have bought a Netmos NM9835 based multi I/O card. This chipset supports the remapping of it's ports to "legacy" port addresses, but the standard driver disks only have a DOS utility for doing so. I have searched for a utility that can do this under Windows 2000, but without any success. Most of the programming and debugging dongles are only supported using a parallel ports at a so called legacy port addresses. From the NM9835 datasheet it looks like if one can get a Multi-I/O card that uses this IC together with an external EEPROM that can be reconfigured using the DOS utility, then such a card will be seen by Windows as being a "legacy" card. The NM9835 supports the loading of configuration values from an external EEPROM at powerup. Unfortunately all the NM9835 cards I could find does not have such an external configuration EEPROM.



Regards Anton Erasmus


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M

In terms of monetary outlay *and* your time invested, wouldn't it have been cheaper to simply buy a new (or even used) motherboard?

Regards,

Mark McDougall, Engineer Virtual Logic Pty Ltd, 21-25 King St, Rockdale, 2216 Ph: +612-9599-3255 Fax: +612-9599-3266
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N

Did you Disable the Bad on board Ports? Disable it in the BIOS Then try to reconfigure the new card in System.

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C

Probably not. At the rate proper parallel ports are disappearing from new machines, that card has a good chance of transferring to future machines.

Some informative links:
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A

Yes, the M/B ports have been disabled. Using the DOS remap utility after booting into DOS from a floppy works fine. Checking the functionality of the ports using old DOS utilities works fine for the legacy addresses. Under windows the port work when I drive a printer, but for programming CPLDs or MCUs, it must be mapped to the legacy port addresses. The "Change Settings" under Device Manager in the resources tab is greyed out.

Regards Anton Erasmus

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