"Roger Hamlett" wrote in

Yes.
I have used it (and the Porttalk package itself), for dozens of
different applications with no problems. Are you sure you are setting
the port address correctly, _and_ that the port is configured
correctly. Remember that on most modern machines, the port will be
configured in the CMOS to EPP, not SPP. The EPP mode, uses DMA, and
extra high I/O addresses, and may not work for a program designed to
talk to an SPP port. Hence you must set the port to SPP in the CMOS
(and allow XP to find it again with these new settings), before you
can use the port this way from an application. Also remember that the
I/O addresses are not allways the same. IBM laptops default to setting
the port on the old 'MDA' printer address, not the default LPT1
address. Again verify in the CMOS that the port is set to 0x378.

It uses ECP and does include the 0x378 address.
I'll have to check if it can use SPP.