Newsgroups: comp.sys.apollo
Path: utzoo!utgpu!cunews!ardavan
From: ardavan@ccs.carleton.ca (Ardavan Tajbakhsh)
Subject: sr 10.2 xon/xoff problem.
Message-ID: <1991Mar25.152157.25840@ccs.carleton.ca>
Organization: Carleton University, Ottawa, Canada
Date: Mon, 25 Mar 1991 15:21:57 GMT

 
     We have a Laserwriter II NT connected to a network of Apollos running    
  sr 10.2 (patch level PSK5) and we are using aegis print services. Everything
  is fine except when a large postscript file is sent to the printer.  The 
  printer acknowledges that it is receiving something, but doesn't generate
  any output.

     I suspected that because of the size of the file (150355 bytes), the printer
  tried to XOFF the line but failed.  I put a terminal in place of the Laserwriter, 
  verified that I was talking to it, sent the file and saw the output scrolling on
  the screen.  Typing <CTRL> <S> on the terminal had no effect.
 
     I know that I can probably get around the problem by using the Unix print
  daemon and associated software, but I'd like to understand what is happening
  rather than using a workaround.  Incidentally, here are the characteristics
  of the line connected to the Laserwriter:

Status of Line 2: 
Erase (character delete) character: 08 (hex)
Kill (line delete) character: 15 (hex)
End of file character: 1A (hex)
Quit character: 03 (hex)
Fault character: 1C (hex)
Suspend character: 1A (hex)
New line delay: 0 
Speed: 9600
Raw: TRUE,          Echo: FALSE,        Cvt_NL: FALSE
CvtRaw_NL: FALSE,   Host_Sync: FALSE,   Input_Sync: TRUE
RTS: TRUE,          DTR: TRUE,          DCD: FALSE
CTS: FALSE,         Quit_Enable: FALSE, Fault_Enable: FALSE
Susp_Enable: FALSE, DCD_Enable: FALSE,  CTS_enable: FALSE
BP_Enable: FALSE,   RTS_Enable: FALSE
Eight bits per character, Parity: None, One stop bit
Errors enabled: NONE
Polite: FALSE,      Wait for DCD: TRUE,       
 
 
                                       Ardavan <Ardavan@ccs.carleton.ca>