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YNT: vrf WIN98 DLL (Parallel Port)

Question asked by VRFuser on Jul 15, 2008
Hi Clif,
I am using the same paralel port dll without any problems in XP.
As you know XP is different from 98 and user mode applications can not access IOs. You need a kernel mode device driver and thats what INPOUT32.dll does. So it should work without any problems in both OSs.
 
Are you sure that you are in administrator mode when running your code in XP? Because if not, you can not communicate with the port.
 
Zafer SAVAS
Senior Expert Test Engineer
Aselsan Inc.

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Kimden: Drew, Clifton
Gönderilmis: Çar 16.07.2008 06:19
Kime: VRF
Konu: [vrf] WIN98 DLL (Parallel Port)



All,

 

We recently upgraded our test systems from WIN98 to XP. The test program loads a custom WIN98 parallel port DLL to communicate with the device under test for configuration purposes. When making a call to the DLL VEE reports a system error. We thought this could possibly be addressed through the utilization of the inpout32.dll, but unfortunately this hasn’t helped.

 

I suspect the solution is to re-write the DLL or develop a wrapper. Appreciate your recommendations on what would be the simplest approach.

 

Respectfully,

Clif


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