README Driver File Contents (HPGL2PS.EXE)

There are two filters in this package that are based on the Roland
plotter command set.

1. DXY: A simple command set that is used with all DXY plotters

2. RD-GL: This command set is a superset of the HP (Hewlett Packard)
   graphics language however it is compatable with the 7475A command
   set. In fact this version of the hpgl2ps filter has been rewritten
   using the 7475A command hand book.

Not all the commands of DXY or RD-GL (HPGL) are implemented (approx 95%
are) and those commands that are not are skipped and a warning given.
It is very easy to add to this filter if a particular unimplemented
command is desired.

If you wish to implement a command go to the relevant portion in the
command switch "dxycom.c" or "hpglcom.c" and call an appropriate user
written procedure.  (You will need a good knowledge of writing
PostScript programs). Also don't forget to put the procedure name in
the Makefile.

The filters call the procedure "getopt" that is used to interpret
command line options and arguments and is normally available on 4.3 bsd
and Sys V Unix. For those sites running 4.1 or 4.2 it may be available
as a local library and must be written into the Makefile.

IF YOU DONT HAVE GETOPT YOU WILL HAVE REWRITE THE CODE THAT INTERPRETS
COMMAND LINE OPTIONS AND ARGUMENTS.

A procedure called "rint" is called in "dxycom.c" and "linetype.c"
if you dont have this call in your maths library then the following
C code will have to be written.

Call the following rint.c (put "rint.o" in the Makefile).

/*-----------Start rint.c------------------*/

int rint(f) double f; 
{return (int)(f + ((f>0) ? 0.5 : -0.5));}

/*------------ End rint.c------------------*/

NOTE 1: The PostScript macros are written into a C procedure to allow
each filter to be a single stand alone program. These macros can easily
be incorporated into other filter programs.

NOTE 2: I have written some test procedures for the testing of each
filter they are "test1.hpgl" for hpgl2ps and "test1.dxy" for dxy2ps.

Don McCormick.

Download Driver Pack

How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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