Path: utzoo!utgpu!watserv1!watmath!att!cbnewsc!vgopal
From: vgopal@cbnewsc.ATT.COM (venu.p.gopal)
Newsgroups: comp.lang.postscript
Subject: Re: Real bottleneck 1200 bps on LaserWriter NTII
Summary: Another solution that may work for you
Message-ID: <12917@cbnewsc.ATT.COM>
Date: 18 Jan 90 00:28:51 GMT
References: <17648@rpp386.cactus.org>
Reply-To: vgopal@cbnewsc.ATT.COM
Organization: AT&T
Lines: 28

!> The programs we use write to the LPT1 port and it is redirected the normal
!> way  using: MODE LPT1:=COM2:.
!> 
!> The LaserWriter NTII owners manual says the serial port should be 
!> configured: MODE COM2:9600,N,8,1,P to work at all. This is the way
!> my AST TurboLaser/PS manual tells me to configure the port.
!> 
!> The same programs write perfectly with both serial and parallel ports
!> with my AST TurboLaser/PS, here I use mostly the parallel interface,
!> but I have tested the programs and procedures I have tried on the
!> LaserWriter NTII with the serial interface and they work ok.
!
!I'd be willing to bet that the following is the problem:
!MS-DOS machines don't work with XON/XOFF protocol using normal dos redirections.
!The problem is that Microsoft DOS, doesn't have the intellegence to know what
!it is doing.  It can't input from a paralell port.  There are 2 solutions.
!the first one is install AST superspool and let it handle the redirection.
!This program is a spooler that can be told about XON/XOFF.  The second
!thing is to makesure that your computer printer cable is wired for DTR/DSR.
!The cable that I use and appears to work for a QMS-ps810 is symetrical.
!What you do to one end, you do to another

If you can save the postscript output from your program into a file,
you can use a utility I wrote called COMSEND to send it to the printer
using XON/XOFF protocol.  If there is sufficient interest, I'll post
it to comp.lang.postscript.

Venu P. Gopal   UUCP: ..!att!ihuxy!vgopal   Internet: vgopal@ihuxy.att.com