Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 139)

8O. Utility Programs II. SOFTWARE GUIDES - 8. Driver488/DRV
II-124 Personal488 User’s Manual, Rev. 3.0
saves internal system information including the interrupt vectors, the device driver chain, and the free
memory pointer. This information, along with the specified comment, is saved for use by
REMDRVR .
The MARKDRVR command is then followed by the commands needed to install the TSR programs.
When using Driver488/DRV, these would be the DRVR488 commands. When these commands have
completed, Driver488/DRV is installed and ready for use.
When Driver488/DRV is no longer needed, it can be removed by using the REMDRVR command:
C: >REMDRVR
REMDRVR prints out the comment that was saved by MARKDRVR and then uses the information that
MARKDRVR saved to restore the system to the state it had before MARKDRVR had been executed. This
removes Driver488/DRV and any other TSR programs that had been loaded in the interim and recovers
their memory for reuse.
If several different TSR programs are being used, then it might be appropriate to use MARKDRVR more
than once. Then, when REMDRVR is used, it will only remove the TSR programs that were installed
after the last MARKDRVR command. Each time REMDRVR is used, it will remove one more “layer” of
TSR programs. The comment saved by MARKDRVR can help keep track of which TSR programs are
removed at each step.
Note that the most recently installed programs are always removed first. It is not possible to remove a
program until all the more recently installed programs have been removed.
When working with Power488, it is good practice to create a DRIVER.BAT file that includes the
DRVR488 commands as described above. Then a MARKDRVR command, such as MARKDRVR
Driver488 can be added to the beginning of the DRIVER.BAT file. Then, Driver488/DRV can be
installed by typing DRIVER and removed by typing REMDRVR . Driver488/DRV can thus be installed
and removed as desired, without rebooting the computer.
Moving Files from an IEEE 488 (HP-IB) Controller to a PC
Included on the Driver488/DRV release disk is a utility program that allows files to be transferred from
any IEEE controller to the PC in which Driver488/DRV resides. This utility program configures the
PC as a Peripheral on the IEEE network, much like a standard IEEE 488 printer. Any controller
capable of sending information to an IEEE 488 printer, including controllers like the HP 9000 series
computers, can send any type of data to the PC.
Once launched to the PC, the file transfer utility allows the operator to redirect the incoming data either
to the PC screen, a PC disk file, or a printer attached to the PC.
PRNTEMUL Files
In the \UTILS subdirectory of the Driver488/DRV diskette, there are 2 files:
•
PRNTEMUL.EXE : This file is the MS-DOS executable version of the program. This is all that you
will need to emulate an IEEE 488 printer on a PC/AT or PS/2 computer.
•
PRNTEMUL.C : This is the C source code of the PRNTEMUL.EXE program. It uses a C subroutine
interface of Driver488/DRV, which is located in the \SUBAPI directory of the main
Driver488/DRV directory.
Configuration of the IEEE Interface for PRNTEMUL
The PRNTEMUL program requires the Driver488/DRV to be configured as a Peripheral (same as an
IEEE printer). Make sure that the IEEE interface is configured at a unique IEEE address.
Once Driver488/DRV is configured properly, reboot the computer and connect your PC/AT to your
IEEE controller.