[comp.sys.hp] HPGL to 7221 filter

vmrad@deneb.ucdavis.edu (0048;0000004328;500;737;56;) (01/25/89)

I am interested in using an old HP7221 plotter.  There are quite a few
of these plotters still around, but no one seems to support them now
that HPGL is the universal HP plotter command language.  If anyone
has a HPGL to 7221 filter program or any other help, like a C language
driver for the HP7221, I would appreciate hearing about it.

Thanks.


Bernard Littau

VM Radiological Sciences          Telephone: (916) 752-0184
School of Veterinary Medicine     Internet:  vmrad@ucdavis.edu
University of California          BITNET:    vmrad@ucdavis
Davis, CA 95616                   UUCP: {ucbvax,lll-crg,sdcsvax}!ucdavis!vmrad

rjn@hpfcdc.HP.COM (Bob Niland) (01/26/89)

re: "I am interested in using an old HP7221 plotter."

> There are quite a few of these plotters still around, but no one seems to
> support them now that HPGL is the universal HP plotter command language.  If
> anyone has a HPGL to 7221 filter program or any other help, like a C
> language driver for the HP7221, I would appreciate hearing about it.

No need for a filter - there is a 4-ROM kit still available that will
convert your 7221A/B/C/S from "compact binary language" to HP-GL.  This
effectively makes it into a 7220A/C/T.

The kit is HP part number 07221-00020, and has a U.S.list price of $75.00.
Contact your local HP Sales Office.

Regards,                                              Hewlett-Packard
Bob Niland                                            3404 East Harmony Road
ARPA: rjn%hpfcrjn@hplabs.HP.COM                       Fort Collins
UUCP: [hplabs|hpu*!hpfcse]!hpfcla!rjn                 CO          80525-9599

bmp@hpcupt1.HP.COM (Brian M. Perkin) (01/27/89)

Ages ago, we sold a package of fortran routines that
talked the packed binary language for the 7221. It
was called plot-21 and was written in some dialect
of fortran-iv. San Diego division sold it at that time,
I believe. I doubt that it is still on a price list,
but it might be worth a call. We shipped source
code, with the product, so you might be able
to rip out the code you need and discard the rest.

Brian Perkin
Hewlett-Packard
Data and Languages Division
hpda!bmp

walter@hpclwjm.HP.COM (Walter Murray) (02/01/89)

> It was called plot-21 and was written in some dialect
> of fortran-iv.

> Brian Perkin

The original HP-PLOT/21 used features of HP FORTRAN/3000.
Around 1980, when I supported it, I rewrote it entirely
in standard FORTRAN, using a highly portable subset of
of the 1966 ANSI standard.  It is designed to be compiled
and run on a wide variety of architectures.

It's a 2-D graphics package consisting of 77 user-callable
routines.  It supports only the 7221 family of plotters.

I don't know whether it's still sold/supported.  If interested,
check with the San Diego Division.  Contact me if you have
trouble finding a lead.

Walter Murray
HP, Data & Languages Division
Phone (408) 447-6129
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