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- MICRO CADAM HPGL.SYS DRIVER
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- October 17, 1988
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- Hewlett Packard Graphics Language Driver
-
- INTRODUCTION:
- Note: The following information pertains to the HPGL.SYS driver
- dated 9/7/88 with a filesize of 2701, and its successors.
-
- This driver can be used to create Hewlett Packard Graphic
- Language (HPGL) plot files or direct HPGL output to a valid DOS
- device names. HPGL plot files are acceptable input to many
- desktop publishing systems, such as Aldus' Pagemaker and Xerox's
- Ventura Publisher. HPGL plot files can also be plotted on MICRO
- CADAM supported plotters which accept the HPGL format. By
- utilizing plot files, customers have the ability to make use of
- dedicated plot workstations, third-party spooling or plot
- buffering programs, or network plot capabilities. These plot
- files could also be beneficial for plot service companies.
- Additionally, they facilitate electronic data exchange between
- companies where the receiving company is allowed the resulting
- hardcopy, but it is not desirable for them to have the actual,
- modifiable electronic form of the drawing. Plotting HPGL direct
- to a parallel port frees up the workstation many times faster
- than plotting via serial port communications. The JDL-850 GL+
- plotter/printer is one device which has the ability to accept
- parallel HPGL input.
-
- The HPGL.SYS driver is installed in the config.sys file in the
- root directory of the workstation's c: drive by using the
- following statement:
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- device=c:\mcadam\hpgl.sys
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- The HPGL.SYS driver should be the only output device driver
- installed in the config.sys file. For more information on
- installation please refer to the MICRO CADAM Installation Guide.
-
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- DRIVER SPECIFIC INFORMATION:
- The HPGL.SYS driver recognizes the following environmental
- variables:
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- SET PAPER_SIZE=wxh
-
- Where w is the width of the paper in whole number of inches and h
- is the height of the paper in whole number of inches. For best
- results w and h should correspond to the width and height values
- of a particular MICRO CADAM model's plot data.
-
-
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- SET UNITS=mm
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- This changes the PAPER_SIZE units from inches to millimeters.
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- SET PLOT_ID=xxxx
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- Where xxxx is the Hewlett Packard model number of the targeted
- plotter. Valid PLOT_ID's are 7440, 7470, 7475, 7550, 7580, and
- 7586. The resulting plot files are not restricted to these model
- plotters as the Hewlett Packard plotters are divided into
- families by number of available plotter pens, size of media
- supported, location of the origin, etc.
-
- If PLOT_ID is set equal to 7586, the driver recognizes the
- additional environmental variable:
-
- SET NFRAMES=x
-
- Where x is the number of 45 inch long frames desired. Using
- NFRAMES provides the capability to do long plots or multiple
- frame plots. Techniques used to achieve long plots result in
- loss of resolution of the plot which is proportional to the
- number of NFRAMES. Therefore the smallest number of frames
- required to fit the entire drawing should be used.
-
- SET FLAGGING=x
-
- This enables XON/XOFF protocol during file transfers to the
- plotter. This is useful for systems that do not support the
- default protocol which is direct control. Systems with UNIX or
- XENIX based file servers is one case where this ability may be
- beneficial.
-
- Any of the environmental variables discussed above may be added
- to the autoexec.bat file in the root directory of the
- workstation's c: drive or may be entered at any time from the DOS
- prompt. Typing SET followed by the ENTER key will display all
- current DOS environment settings.
- OPERATION FOR CREATING HPGL PLOT FILES:
- 1. Create your MICRO CADAM drawing as usual.
-
- 2. Place plot data on the drawing.
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- 3. Log off MICRO CADAM.
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- 4. Now key in plot to bring up the MICRO CADAM plotting program.
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- 5. Key in the group, user in which the desired drawing resides.
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- 6. Call and select the desired drawing or key in the drawing
- name.
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- 7. Wait until the plot screen returns.
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- 8. Log off the plotting program.
-
- 9. Check your current directory for a file with a name in the
- following format:
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- pltfile.n
-
- Where n is a number, ie. 1,2,3 etc. Each time you run the plot
- program with HPGL driver, the file number is incremented by one.
-
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- OPERATION FOR REDIRECTION OF HPGL OUPUT
- Use the additional DOS environmental variable
-
- SET HPGL=filename
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- to direct the HPGL output to any valid DOS filename including DOS
- device names, such as LPT1, LPT2, LPT3, COM1, COM2. All the
- aforementioned environmental variables are still valid in this
- mode.
-