>I don't have NT 3.51 to test, but try this:
>
>Go to Control Panel, choose ports. I believe you can set the address ranges for each port there. It seems that you have now overlapping zones for both LPTs.
>
>Vlad
>
>>In Windows NT 3.51 I am having trouble with an EZ135 parallel port drive attached to LPT1 (I/O address 378) interfering with a printer on LPT2 (I/O address 278). When the EZ135 PP drive is not connected the printer on LPT2 works just fine.
>>
>>In Event Viewer I get the following error messages and event details:
>>
>>Source: Parport, EventID: 22
>>
>>Details:
>>A conflict has been detected between two drivers which claimed two overlapping Io port regions. Driver Parport, with device <\Device\ParallelPort0.Translated>, claimed an IO port range with starting address in data address 0x28 and 0x2c, and length in data address 0x30.
>>
>>Source: Parport, EventID: 22
>>
>>Details:
>>A conflict has been detected between two drivers which claimed two overlapping Io port regions. Driver epathdx, with device <\Device\ScsiPort1.Translated>, claimed an IO port range with starting address in data address 0x28 and 0x2c, and length in data address 0x30.
>>
>>Source: Parport, EventID: 5
>>
>>Details:
>>The hardware addresses for are already in use by another device.
>>
>>Source: Parport, EventID: 21
>>
>>Details:
>>Unable to get device object pointer for port object.
>>
>>My system is a 486 DX4 100 Mhz, (AMI BIOS, Not PNP and ports are not configurable from the BIOS), with 40 Mb RAM, two ECP parallel ports.
>>
>>
>>David Kolb

Paul:

In NT 3.51 going to Control Panel and Ports only gives information about the serial ports.