Hi Andi I used a serial to USB converter to do the same, all that was needed was the drivers that came with the device and it worked. Only weird thing I noticed was with the serial it installed extra COM ports all the the way up to COM12 each time I changed USB port. This means that you should have a setup screen to select the LPT port in case it works the same way and the user plugs the device into an extra USB slot - My thoughts are that it will increment the LPT port number.
Andre David J Taylor wrote: > andi wrote: > >> Hi I'm new in interface programming, I usually used port address $378 >> to access the parallel port LPT1, how if I'm using a usb to parallel >> converter (in case most current laptop doesn't provide the LPT port >> anymore, so I have to use such converter)? Do I have to use different >> address to access the LPT through USB? >> >> Thanx. >> > > Providing you use the right address, no change is required, I believe. > Operating systems such as Windows 2000 or XP will prevent direct port > access unless a driver like UserPort is used: > > http://www.embeddedtronics.com/design&ideas.html > > David > > > __________________________________________________ > Delphi-Talk mailing list -> Delphi-Talk@elists.org > http://www.elists.org/mailman/listinfo/delphi-talk > __________________________________________________ Delphi-Talk mailing list -> Delphi-Talk@elists.org http://www.elists.org/mailman/listinfo/delphi-talk
