Windows NT Parallel Ports Do Not Use InterruptsLast reviewed: November 4, 1997Article ID: Q103411 |
The information in this article applies to:
SUMMARYIn Windows NT, parallel ports do not use any hardware interrupt request lines (IRQs). The Windows NT parallel port driver is thread-based, and the port is polled at background priority. This eliminates a number of potential hardware conflicts with other devices that might want to use IRQ 7 or 5, that used to be the parallel port interrupts.
MORE INFORMATIONIf you have applications that run very slow due to large print jobs, you can reduce the thread priority of the port print function by adding the following registry entry: WARNING: Using the Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
Windows NT 3.51
Windows NT 4.0
Keywords : ntprint NTSrvWkst kbprint Version : WinNT:3.1,3.5,4.0 Platform : winnt |
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