GPIB.DLL Functions - Question

[C. Kennedy]

Hello-
I am looking at an exehdr of GPIB.DLL (16-bit) and am wondering what the following functions are for and what their parameters are. Any help would be great!

ROUTE_VXISTUFF
RETRIEVE_COPYRIGHT
ROUTE_IBMESSAGE
ROUTE_IBMSG

Also - Does anyone have access to the GPIB.H file for 16-bit GPIB.DLL?

[DiegoF]

Hi,

What driver version is this? What OS?.

The driver installer should have installed the language interface files for the GPIB.dll. There are usually located in "Program files/National Instruments/NI-488.2/Languages". In this directory you'll find the necesary header files (ni488.h).

Also check the Programmer's reference manual for this driver version you have.

Finally, this functions may not be declared in the header file or appear on the user manual. In this case, these are undocumented functions. These are probably used by other NI applications.

DiegoF
National Instruments.

[C. Kennedy]

I have v. 2.7.1 for Windows 3.1.1 (yes, ancient I know). You see, I am working on intercepting the NI gpib.dll function calls so that I may convert data being sent to it from CIIL to SCPI, since it will not be possible to re-compile all the TPSs that currently create CIIL.

When doing an exehdr on the NI GPIB.DLL I found those few extra functions and cannot find any documentation on what they are. I have searched my computer for any header files that would give me a clue, but none were found. ni488.h was not found on my computer.

I am experiencing problems with NI 16bit interactive utility. When an ibonl 0 is sent it returns an error however when ibonl 1 sent, all is fine. If I intercept this call (route_2int with fncode of 1) and force an i
bonl 0 with ibonl 1, I still recieve an error, even though gpib.dll really got 1. It seems as if the utility is not even using the ibonl function from the gpib.dll. Quite strange. Thanks for any advice you can offer.

-C. Kennedy