Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!pasteur!ucbvax!hplabs!hp-pcd!hplsla!hpvcla!ignoffo
From: ignoffo@hpvcla.HP.COM (John Ignoffo)
Newsgroups: comp.sys.hp
Subject: Re: Display functions on the Rugged-Writer 480
Message-ID: <4340009@hpvcla.HP.COM>
Date: 23 Jun 88 17:15:42 GMT
References: <1679@tic.UUCP>
Organization: Hewlett Packard, Vancouver, WA
Lines: 35

>	Hi again.  I am doing some work programming a Rugged-Writer printer
>from HP and just found out that when you go to disable the display functions
>you always get a capital Z printed out.  Is there some way to get around this?
>Does anyone else out there use the Rugged-Writer?  

There is no way around the printing of the "Z"  at the end of Display 
Functions mode.  This is a debugging mode and not intended for document 
preparation.  I suggest that you look at Transparent Data mode as the way 
to display the normally non-printing characters.  It is described in the 
RW-480 Owner's Manual on pg. 4-39.


Tech Note on HP Display Functions Mode:
--------------------------------------
"Y" is the sequence to begin Display Functions mode.  While in this
mode, only  and Z cause the printer to do anything except print a
symbol(or space) for EVERY byte received!  

 will print a symbol (or space) and execute .  

"Z" is the sequence to end Display Functions mode, and in HP printers
that support Display Functions mode will always print before disabling 
Display Functions.  It is the only escape function that operates while in 
this mode.

The character that is printed for the  character is dependent on the
font and character set that is active at the time Display Functions mode 
is entered.  Some fonts print a small "EC", some a , some a , and a few: something else.


Hope this short tutorial helps.

John Ignoffo  
Hewlett-Packard Company