
 userd rev.1.0, 97-09-28

  Copyright 1997 Andreas H. Mueller under the laws of the Gnu Public Licence.
  Read COPYING for details.


  Installation is pretty simple: Run 'make config' and after this 'make' or
 'make install' to get the binary installed in /usr/sbin.

 Config options: address	  :  The base address of the lp-port you want
				    to use, usually 0x3bc, 0x378 or 0x278.
				     The default is 0x378. (The 0x stands for
				    the hexadecimal notation --
				    VERY IMPORTANT!)
		 update-delay	  :  The delay between display-updates. Decrease
				    this, if the display is flashing too much.
				     The (good) default is 10 milliseconds.
		 realtime priority:  If set to 0, the task will not have real-
				    time priority. If set to >0, it will get
				    the time it needs, even if this crashes the
				    system. Use this only if you know what you
				    are doing.
				     The default is 0.

  To connect a display to a printerport, you just need the double display and
 some cable, the plug for the port and the display itself, with shared kathode,
 2 digits and the pinout.

  The printerport is numbered as follows, if you look at it:
	______________________________________________
	\					     /
	 \  13 12 11 10  9  8  7  6  5  4  3  2  1  /
	  \					   /
	   \  25 24 23 22 21 20 19 18 17 16 15 14 /
	    \____________________________________/

  The pinout of the display, when you look at the pins:


	 _________
	| ___a___ |
	| |	| |  K is the shared kathode, the two pins are usually internal
	| f	b |  connected. All you have to do now is to connect the pins
	| |	| |  of the port-plug and the pins of the display as follows:
	| |__g__| |
	| |	| |
	| e	c |	a - 2	e - 6	K1 - 14   K1 means the cathode of the
	| |	| |	b - 3	f - 7	K2 - 16   right display, K2 means the
	| |__d__| |	c - 4	g - 8		  cathode of the left display.
	|_________|	d - 5	i - 9
	  This 2x

	Note that you can't use two single displays, since you MUST HAVE one
	double-display (14-segment) with one connection-set for both displays!
	Note K1 and K2 (pinout-description of the display).
 
	Be safe dong this - a short between two pins mey reult in a destroyed
	printerport. According to this, DO NOT USE ON-BOARD ports, as a damage
	of the port may result in a defective chipset!

	Jepp, that's it. Enjoy it, hate it or whatever.

	Andreas Mueller, Sept. 1997.
	(cameron@rupert.stochastik.rwth-aachen.de)

