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rt_irq_gen.o waits for an input on the parallel port in polling mode. This polling-task is in a busy-wait loop until something occurred at the parallel-port, it will ''freeze'' your rtlinux box until something comes in or it is timed out. if you remove the timeout in rt_irq_gen.c then your rtlinux box will only stay ''alive'' as long as you run the lpt_irq program on your second linux box connecting it via a plip-cable.
Der Herr Hofrat
2002-03-08