Important to know: Windows saves these settings separately for every USB socket. Therefore, if you change the socket where you plug the USB2LPT, you must repeat this setting change.
Alternatively, you can activate the serial number to be visible as USB descriptor. In this case, settings are bound to the serial number.
Now advance by clicking on tab „Statistics“, and let stay this property sheet open and visible. So you have an idea how and when USB2LPT works.
Connect your hardware to the 25 pin SubD receptacle of USB2LPT converter, start your software, and observe the counters. Best action is counting at “READ/WRITE_PORT_UCHAR redirection”. You may disable debug register usage in the previous property page to increase system stability.
Unlike shown in these property sheet pages, redirection via debug register is not implemented in the 64-bit version of the driver. As a 64-bit Windows version requires 64-bit drivers, the 64-bit version is automatically installed and used. The only chance to use the (fully functional) 32-bit driver on a 64-bit system is in a Virtual Machine.
This device and driver should work on Windows Server 2003, 2008, and in virtual environments. However, as I cannot test all scenarios, it’s unsupported by me.
The driver is now fully multiprocessor (SMP) safe. This includes equality of debug register states among the different processors.
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