Identifying port addresses in Red Hat

Bondfire · 02-06-2005, 07:29 PM

Hi,

Can any1 tell me how to identify various port addresses (parallel , serial, ps2 ports) in Red Hat?..Is there any similar feature like Window's Device Manager to do this?

Thanks

Bondfire

michaelk · 02-06-2005, 07:58 PM

This might do it.
cat /proc/ioports

Bondfire · 02-06-2005, 09:17 PM

Tnx for your reply...

Just 1 more question..how can i know which is address for the parallel port?

I get a whole list of addresses togther with names like dma,pic1,ide1,fpu......the ps2 port is ok since it correspoonds with "keyboard" and the serial port with "serial" but i don't know how to identify the parallel port.

Yr help pliz

Bondfire

scott2004 · 02-06-2005, 09:47 PM

Your parallel port is probably lp0 or if you have two, lp0 and lp1. Linux often start counting at 0.

Cheers,
Scott

Bondfire · 02-06-2005, 09:54 PM

Hi..

there is no lp0 or lp1...but i for sure have a parallel port...

Neways..i'll try 0x0378 for that is most frequently the address and see if it works

Thanks

Bondfire

scott2004 · 02-06-2005, 10:07 PM

What are you trying to do that you need to reference your parallel port?

lp0 is what my version of linux (FC3) uses to reference the parallel port for printing. May not be relevant ot you, though.

I would also look under /dev (e.g., ls /dev for a listing of installed and available devices.

Scott

Bondfire · 02-06-2005, 10:10 PM

I'll be reading data from the ps2 port and writing data to the parallel port...but i've yet to see whether Kylix3 allows this or not

Bondfire

DaHammer · 02-06-2005, 10:50 PM

Device assignment for the parallel ports depends on what type of device is connected to it. It's not like serial ports where ttyS0 is always COM1 no matter what's actually connected to it. Read Documentation/devices.txt in the kernel source tree for details on the various assignments.

Bondfire · 02-07-2005, 02:04 PM

Thanks...i'll check that out.

By the way, any1 has any idea whether Kylix allows hardware access?

Bondfire