Main Index
Xircom Pocket Ethernet III Adapter  (PE3)

IRQ Level

It defines the interrupt request line that the adapter will use to interrupt the system.

LPT1:	7

LPT2:	5

I/O Port Address

It defines the I/O base address that the adapter will use.

LPT1:	3BC or 378

LPT2: 	278

Before installing the adapter and driver you must determine the I/O port number and interrupt level used by your parallel port.  The easiest method to find out the I/O port is to use the Windows NT utility WINMSD.  Start WINMSD and push the "Devices" button.  Double click the "\Device\ParallelN" entry in listbox, where N is 0 for LPT1, 1 for LPT2, etc.  The port will be displayed in the last window.  Usually interrupt 7 is used for port 378 and port 3BC, interrupt 5 is used for port 278.

LPT1 on most computers is port 378 and interrupt 7.  However, on COMPAQ systems LPT1 is port 3BC and interrupt 7.

It is not necessary to disable the Parallel driver.  The network drivers load first and the parallel port driver will be disabled automatically if a XIRCOM adapter is found.

The XIRCOM adapter must be attached prior to starting Windows NT and can't be removed until Windows NT is shut down.

If you wish to use the parallel port for printing, the XIRCOM adapter must be removed prior to starting Windows NT.