Curtis,
You are right, these files (in HPENV.SYS) are for the
HP2680/HP2688 type of printers. They used a language called DCL (I
think). Different parts of the files are downloaded to those printers
with FDEVICECONTROL calls. These are totally unusable with LaserJet
printers. If you really want the documentation, they were listed along
with the different character sets (in CHARSET.SYS) in the IFS/3000
manual (Interactive Formatting System) part number 36580-90001. The last
edition I have is dated 9/84.
Hope this helps
John Zoltak
North American Mfg Co
> -----Original Message-----
> From: Curtis Larsen [SMTP:[log in to unmask]]
> Sent: Wednesday, October 21, 1998 4:06 PM
> To: [log in to unmask]
> Subject: [HP3000-L] Using Environment Files (or "The Prints of
> Darkness")
>
> I too have been pretty frustrated with the lack of available
> documentation on "HPENV" files, and what each does, so I never used
> 'em -- I just wrote my own environment files when I had to.
>
> I don't know what results everyone else got when trying these "HPENV"
> files out -- experimentation is a key to learning, ya know -- but they
> all caused my LJs to have fits. The only ones that work are the
> [log in to unmask] files. (I heard later that all the HPENV-coded files
> were strictly for the 2680, but I do no tknow if that's true.)
>
> When using "FCOPY FROM=<filename>;TO=;HEX;CHAR" (the poor man's file
> dump utility), I found that the PCL@ files included only the basic
> expected control sequences needed, while the "HPENV" files included
> all sorts of goofy stuff that WOULD cause an LJ fits. (And did. Do.)
> Notice the EOF too -- much bigger on all the "HPENV" files than on
> the PCL files.
>
> Where did HP ever document these "HPENV" files?
> (While I'm whining, I might as well ask where the good TTUTIL
> examples are too.)
>
> FWIW, the following work fine for me on IP-connected LaserJets
>
> PCLLP.HPENV.SYS = 132-column landscape (line printer mode)
> PCLLPD.HPENV.SYS = Ditto, with duplexing
>
> PCLELITE.HPENV.SYS = 80-column portrait (basic LJ output)
> PCLELITD.HPENV.SYS = Ditto, with duplexing
>
>
>
> A note about the recent PDL/Postscript thread -- Something Nice to
> port to MPE might be the Linux "netpbm" set of utilities, which would
> allow conversion of any graphics/print format to another. This
> distribution has over a hundred little command-line programs in it
> that either convert a particular format to, or from, a Portable Bitmap
> Package, as well as manipulate the graphics files while in the
> portable format -- doing cropping, re-sizing, etc. I don't know if
> the source for this distribution is available, but something so handy
> could be Very Nice Indeed for HP3000s.
>
>
>
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