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read 5V signal on parport0

Hey ya

We have connected a LCD with a T6963C-controller to par0 (devboard 82,
2.4.20) and we are writing a driver for this LCD. Is it safe to read the
busyflags of the LCD? I mean the parport is 3.3V and the display outputs
5V. Is there any risk of breaking something?

Regards Henke