Provides support for your parallel ports LPT1, LPT2 and LPT3 on PCs with ISA or PCI buses.
This parameter change the transmission method from polling to interrupt. The interrupt method is faster but won't work on every system.
The used IRQ depends on the I/O address the LPT-port uses. IRQ 5 is used on LPT ports installed on the I/O address 278, IRQ 7 is used on LPT ports installed on the I/O address 378 or 3BC. To find out the I/O address of a LPT port use the Hardware-Manager.