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Device chain error - works then fails

Altera_Forum
Honored Contributor II
‎06-04-2016 07:05 AM
1,029 Views

Hey Folks 

 

I recently started using a nano dev board and once I got up and running, all was well for the first week or so, however recently I have started having some problems when I program the FPGA with my code. The code I have at this point is a simple two digit counter/timer (7 seg display) that resets after 1 minute. 

 

The programmer updates the chip, and the counter works, but as can bee observed it this pic, the progress bar stalls at about 60% (sometimes 66%,this time 69%), and then it fails. 

 

http://www.alteraforum.com/forum/attachment.php?attachmentid=12322&stc=1  

I suspect, given the counter is working at this point, there is a 'check' of some sort that is failing. Once this occurs, I am unable to use the autodetect function and I get the error 'Unable to scan device chain'. 

 

I'm using OSX on a parallels VM with Win10. No changes have been made (knowingly - maybe W10 had an update that had an impact??). Like I mentioned though, everything worked as expected initially. 

 

Hoping someone can help point to a resolution... 

Cheers
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