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Writing Windows WDM Device DriversIn the Device Manager, select the Parallel port (LPT1) driver. First, remember which resources the LPT1 driver uses. Now remove the Parallel port driver from this profile. Simply disabling the driver is not good enough, as a disabled driver still keeps its resource assignments. Do not restart yet. Now install a WdmIo device in the Other devices category as usual. You will have to reboot for the WdmIo device to be activated. I found that removing the Parallel port driver may mean that the parallel port was disabled in the BIOS setup. As you do the last reboot, you should go into your BIOS setup and reenable the LPT1 port again. If you ever reboot and choose the "Original Configuration" hardware profile, you will find that the WdmIo device has been removed from the WdmIo profile. You will have to reinstall it and reboot. Sigh. If you use WdmIo to talk to some of your own custom hardware, you will almost certainly not need to go through all of the previous shenanigans. Similarly, for a one off test of WdmIo talking to a parallel port, you should be able to install it without using different hardware profiles ...» | Код для вставки книги в блог HTML
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