APPLICATION NOTE #140
 USING THE QMS-PS 800 WITH XYWRITE III PLUS
 Rev. 01


 The QMS-PS 800 and QMS-PS 800 II, products of QMS, Inc., are 
300-dot-per-inch laser printers that respond to PostScript (a page 
description language developed by Adobe Systems Inc.) This 
application note explains how you can set up a PC (Printer Control) 
table or use the PI (Printer Insert) command to change the printer's 
method of feeding paper or to switch paper trays.


 USING THE MANUAL PAPER FEED SLOT
 The manual paper feed slot is useful if you want to print an  
envelope, a transparency, or other such items. To switch from 
cassette paper feed (the default state) to the manual paper feed, you 
use the following PostScript command:

       )s statusdict/manualfeed true put(

 XyWrite provides two ways to send PostScript commands to the printer: 
the PI (Printer Insert) command and the PC (Printer Control) command.

 To use the PI command:

 1.  Move the cursor to the place in the document where you want to 
activate
     manual paper feed.

 2.  Enter the PI command, along with the PostScript command for 
manual feed:

       Type:  F5pi )s statusdict/manualfeed true put( <CR>

     Result: When you TYPE your document, the code to switch to manual 
feed is
     sent to the printer. The printer remains in the manual feed state 
until it
     receives a code to change to the cassette feed state or until you 
power
     the printer off and on.

 To restore printing to the printer's cassette paper feed:

 1.  Move the cursor to the place in the document where you want to 
reactivate
     cassette feed.

 2.  Enter the PI command, along with the PostScript command for 
cassette feed:

       Type:  F5pi )s statusdict/manualfeed false put(<CR>

 If you regularly switch from one method of paper feeding to another, 
you may want to set up a PC (Printer Control) table in your printer 
file. The PC table eliminates the need to remember the PostScript 
command and also reduces the  risk of making a typographical error 
when issuing the command.

 To set up a PC table:

 1.  Call your printer file to the screen. For example:

       Type:  F5call 3post.prn<CR>

 2.  Move the cursor to the section of the printer file that contains 
the
     default commands (e.g., DF PL, DF FD, etc.).

 3.  Enter the PC table. (See Note #1.)

       Type:  PC:2
       Type:  )s statusdict/manualfeed true put(
       Type:  )s statusdict/manualfeed false put(

 4.  Store and load the printer file.

 5.  Call your document to the screen.

 6.  Enter the appropriate PC command. The numbers in the PC command 
refer to
     lines in the PC table. To switch to manual feed:

       Type:  F5pc 1<CR>

     To restore cassette feed:

       Type:  F5pc 2<CR>


 CHANGING PAPER CASSETTES
 The QMS-PS 800 II has two paper cassettes.  The lower cassette, which 
the printer uses by default, is tray 1; the upper cassette is tray 2.

 To switch to the upper tray, issue the PI command to send the  
correct PostScript  codes  to the printer.

     Type:  F5pi  )s statusdict begin 2 setpapertray end( <CR>

 To reinstate tray 1 as  the default, issue the following  PI command:

     Type:  F5pi  )s statusdict begin 1 setpapertray end( <CR>

 As with all printer instructions, you can include the codes to change 
 paper  cassettes in a PC table in your printer file.  The  table 
would  look  like  this  (see Note #1):

   PC:2
   )s statusdict begin 1 setpapertray end(
   )s statusdict begin 2 setpapertray end(

 After you enter this table, store and load the printer file. You can 
now  change paper trays by issuing the PC command.

 To activate paper tray 2, move the cursor to the appropriate spot in 
your document and:

   Type:  F5pc 2<CR>

 To restore paper tray 1 as the default:

   Type:  F5pc 1<CR>


 Note #1  Editing a PC Table. A printer file can contain only one PC 
table, but that PC table can contain any number of lines. If your 
printer file already has a PC table, you can add the control strings 
described in this application note to it. Be sure to change the top 
line of the PC table to include the number of lines you add. Then 
determine the line numbers for the new control strings so that you 
specify the correct values in the PC command.