Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!husc6!cfa!kjk
From: kjk@PacBell.COM (Ken Keirnan)
Newsgroups: comp.lang.postscript
Subject: Re: Setting emulation mode through software on a nec LC-890
Message-ID: <1524@cfa.cfa.harvard.EDU>
Date: 20 Apr 89 21:57:48 GMT
References: <1240@cmtl01.UUCP>
Sender: news@cfa.harvard.EDU
Reply-To: kjk@PacBell.COM (Ken Keirnan)
Organization: Pacific * Bell, San Ramon, CA
Lines: 38

In article <1240@cmtl01.UUCP> mdorion@cmtl01.UUCP (Mario Dorion) writes:
>
>Hi!
>
>I happen to have a SilentWriter LC 890 which is a full postscript laser

[ text deleted ]

>Is there a way from HP or Diablo emulation mode to 'escape' into postscript so
>that I can change the mode back???

The sequence you are looking for is "ESC-DEL-0" (ASCII Escape, Delete, Zero)
from the HP or the Diablo emulations.  This should be followed after a second
or two delay by a CTRL-D (ASCII EOT).  This will return to the PostScript
batch mode (mode 0).

>As a side issue, the first part of my postscript program/script sets up the
>system so that I can make permanent changes to the settings. Once I have set the
>mode to whatever I wanted,  how do I tell it to 'put the write protect back
>on' ???

Actually, you do not need to use "exitserver" to change emulation modes.
It is sufficient to use:

	statusdict begin <MODE> setsoftwareiomode end

followed by a short delay and a CTRL-D (EOT).  Note that when changing between
emulation modes, the CTRL-D is required before the new mode becomes effective.

When you *do* need to use exitserver to permanently set data, the magic
CTRL-D (PostScript end-of-job indicator) will return you to the PostScript
server (the "protected" mode as you call it).

Ken Keirnan
-- 

Ken Keirnan - Pacific Bell - {att,bellcore,sun,ames,pyramid}!pacbell!pbhyf!kjk
  San Ramon, California	                    kjk@pbhyf.PacBell.COM