fpga memory check

[srm@viewpointusa.com]

I suspect that I have bad RAM on a FPGA board.  is there a utility or code that I can run to verify RAM on R-series card?

BTW, the reason i suspect the board is, errors in operation for routines that use memory  follow the board in question.

thanks in advance

Stu

[Brinoceros]

Hi Stu,

We don't have any standard tool for such a check.  What kind of errors are you seeing?  Maybe with more information we can try to troubleshoot this.

Regards, 

[srm@viewpointusa.com]

The code I am running is similar to the FPGA PID code.  it uses memory instead of shift registers to preserve previous data to allow for multi-channel use.  It would be similar to saying, I am using the FPGA PID tool for 4 channel PID and the third channel is not returning correct information but the other three are.  The identical bit-file on two other cards works correctly.

[Brinoceros]

Well, there is no "tool" that we use, but you could certainly write your own.  Just make some direct read/write tests and see if you can confirm your suspicions.  There are more troubleshooting type questions I could start to ask (are they the same cards?  you Say what your VI is "similar" to doing, but what is it really doing?  are there actually 4 I/O channels because maybe it is an ADC or something else? etc..) if you want to go down that road.  However, you may want to give NI a call and do this troubleshooting on the phone if you suspect it will end in sending a board in for repair.

Message Edited by Brian_A on 10-13-2008 09:30 AM