Mecer Parallel 2 Port Pci card 4018T cant detect (Lpt) addresses ?

[Shako]

Hi im currently working on a program to write to an eeprom via parallel port.

The program works ok when there is built in parallel port, But with the Pci Parallel Port  the following code does not work.

Im use Cvi 9.0.

int GetPrinterAddr (int PortNo)
{
 int iport;
 unsigned int wAddr;
 
 //GetCtrlVal (MainPnl, MAINPANEL_PORT_NUMBER, &Printer);
 wAddr=0x0408+(--PortNo*2);
 iport=0;
 ReadFromPhysicalMemory (wAddr, &iport, 2);
 
 return(iport);
}

PLease Help.

[Shako]

All i need is some why to find the lpt 1,2,3 Base Addresses in xp.

I do have direct access to the ports But because its a pci parallel card and on xp i cant get the address from the bios.

Urgently need help !!

[Dennis_Knutson]

Since you are using CVI, you should post to that board.

[BCho]

Hey Shako,

Dennis is right in saying that there is a CVI board that might more relevant for your questions. In terms of accessing your pci parallel device, do you have to address the pci port and then the lines you wish to use? Their may be information in the manual for your device that would be useful for determining how to address its pins using C. Also, there is a thread regarding communicating with the parallel pins in CVI using the NI VISA driver that you may find useful: Read/Write Parallel Port

Hope this helps.

-Ben

[Shako]

Thanks for the help.

I will do some more research on your suggestion Ben.