Re: [parisc-linux] Re: J5000 LCD heartbeat

[Stuart Brady <sdbrady@ntlworld.com>]

On Sun, Mar 20, 2005 at 09:03:57PM +0100, Thibaut VARENE wrote:
> it's not that simple.
> If you want to have it gone, add 
> @reboot echo "" > /proc/pdc/lcd
> in your root crontab :)

BTW, If anyone really wants scrolling, this script should do it.  It has
to use character 16 for spaces, which is a bit broken -- YMMV.

====================
#!/bin/bash

STR="Linux $(uname -r)   "
END=""

# Prevent the PDC from stripping leading spaces by
# using character 16 (octal 20) as a space...

STR="$(echo "$STR" | tr ' ' '\20')"

while(true); do
	echo "${STR}${END}" > /proc/pdc/lcd
	END="${END}${STR:0:1}"
	STR="${STR:1}"
	if [ -z "${STR:-}" ]; then
		STR="${END}"
		END=""
	fi
	sleep 0.25
done
====================

The character set is interesting:

1-8 for the disk/network/heartbeat symbols
32-127 are the standard ascii characters, except that:
   92 is a yen symbol
  126 is a left arrow
  127 is a right arrow
128-159 are unused
160-254 seem to be a mix of japanese, greek and accented roman letters
240 is an empty box
255 is a filled in square

Hope that helps,
-- 
Stuart Brady