Problem with direct I/O in Linux

[alotti]

Hi,
I'trying to read a value form a direct I/O with this instruction:
lsb% = INP(address)
but if address is higher than 1023 the result is a SEGMENTATION FAULT (with address lower everything work fine).
Can anyone help me?

Andrea

[TJF]

I guess you need privilegues to access these adresses.