Parallel Port Tester

Thanks I will try to get my head around how to make changes to the Axis UI

www.google.com/search?source=hp&ei=uUzDX...a7DFcQ4dUDCAU&uact=5
First 3 results have everything.

Thanks - will have a good look at those soon.

This is my version of parallel port tester for dual-port setup.

In my case, I have one LPT port onboard (address 0x278) and the second is on PCI card reported as:

Sorry I never got back on this . I later discovered that there was an internal patch cable failure (one pin was open) connecting the adapter card to the connector on the rear of the chassis. Cable had worked fine for years and suddenly failed intermittently at first. Pulled my hair out on this one - I would replace the board with a new one without also changing the patch cable. Duh! The original board was working fine.

I hope you can bear with me. I spent hours just trying to load Linuxcnc and went round in circle due to my own stubbornness however will now ask quicker.
I modified line1 by replacing 0x378 with 0xdcb which I think is my parallel port address. When i run ptest I get
"halrun -I -f ptest.hal
Refusing to run as root without fallback UID specified
To run under a debugger with I/O, use e.g.,
sudo env RTAPI_UID=`id -u` RTAPI_FIFO_PATH=$HOME/.rtapi_fifo gdb /usr/bin/rtapi_app
ptest.hal:1: waitpid failed /usr/bin/rtapi_app hal_parport
ptest.hal:1: /usr/bin/rtapi_app exited without becoming ready
ptest.hal:1: insmod for hal_parport failed, returned -1
halcmd: exit
Refusing to run as root without fallback UID specified
To run under a debugger with I/O, use e.g.,
sudo env RTAPI_UID=`id -u` RTAPI_FIFO_PATH=$HOME/.rtapi_fifo gdb /usr/bin/rtapi_app

Is there something elseI need to change. Thanks in advance