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Labview 7.1 Analog Output is incorrect, computer crashes and output often quits generating

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Trying to set up an older NT pc with Labview 7.1 using an AT-MIO-16x card...everything is loaded, I can load NI-DAQ 6.1 examples, and the DAQ Configuration utility MOSTLY works correctly.

In the config utility, I can set all the correct settings, however I get the dreaded "The device is not responding to the first IRQ setting" for any acceptable IRQ numbers I choose, like 5, 7,9,10,11 or 15. Others simply aren't available, and all that are, generate that same message.  However I can run the test panels and get analog output, for example, just fine, tested with an LED.

 

So I moved up to loading an example VI, the function generator...It sort of works, but crashes easily, or stops generating altogether if I hit the stop button and restart, and its output looks nothing like one of the square, sinusoid, sawtooth, etc, shapes, watching on a scope, it is just banging hard high then low, sometimes spitting out a burst of sinusoid for half a second or so.

 

I suspect this is all related back to the IRQ issue, I have searched all the knowledge bases, come up with nothing that fixes this.  Thought maybe somebody could lend some insight.  Labview really is more stable than this right?

 

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I still work with 7.1 and it's hard to crash. Some people on lava praise it because it was one of the most stable releases.

You could try with DAQmx (check which version still support LV 7.1).

Sine and high/low on your scope -> check the sine. If it's 50(60) Hz, something is wrong on the elecronics side.

 

Felix

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Thanks for the quick reply.  I am using an ISA slot MIO board, so I am forced to stick with NI-DAQ 6.1, which should be fine.

I found a knowledge bas article indicating possible PCI/ISA slot IRQ conflicts, but I already changed my BIOS to reserve the 5 IRQ for the ISA slot.  Tried it both ways actually and it made no difference.   Need to kick around the NT OS and figure out if there is a conflict there somewhere.

 

I thought I had this all licked, I formatted the C drive, installed NT fresh, am using the machine only for Labview, and share the PC slots with 2 cards, an ISA video monitor  card and 10/100 network PCI card.  THough I never used the setup yet, so don't know if there is some other problem limiting my progress....will keep looking.

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Solution
Accepted by topic author kichman

Well I tried a bunch of things and found success. Looks like my MIO board is kaputt.  Good thing I have 3 of the buggers. The second one set up fine in config, and runs decent for the couple example daq VIs I tried.

Onward, and thanks so much for responding.

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