My parallel port cannot work on win2000 and new pc

I was troubled by the reading/writing from parallel port on win2000 for a long time. I had made my programs work on win2000/OLD PC, but i failed with the same programs on win2000/new PC. I tried with the method from the forum, that is, install accessHW and other method from my colleagues. Allways failed. I have to return to an old pc, it work! I think not only win2000/winxp will influence parallel port work, but also pc hardware. My new PC is Dell's GX260SMT with p4 2.4G. Dell's FAE told me that i can not install win98 on the pc due to some limitation of mainboard. Who met the smae issue as mine? How to fix it? Thanks for any help.

I typically stay away from Dell PC's. I always have problems with them..
I'm surprised to read that a new PC doesn't support Win-98. Have you / can you try Win-NT 4?
I can't understand why Win2K would be different with a newer PC. The OS assigns the base address of the parallel port to a typical value of 0378h. This is for LPT1.
My question would be: Are you having problems with LPT1 or do you have a PCI-based Parallel Port (to add ports)? If so, you cannot change the base address with Win-2K or Win-XP which assigns a PCI base address to the port.
Can you provide more details as what exactly changes between the 2 PC's. Other than the motherboard and typical hardware (of course).
How is the parallel port configured?
What are you doing
with it, etc?
Any information that can help figure out a solution.
Regards,
JLV

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