UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Visitor florentp
Visitor
1,288 Views
Registered: ‎08-05-2015

JTAG device detection error : negative overflow

Jump to solution

Hi,

 

I have a problem to detect JTAG device with Vivado 2016.2 under windows X

Using impact is correctly working (device detection and programmation are OK).

This means hardware , jtag connexion and USB driver are OK.

JTAG speed is also OK

 

But Vivado hardware manager don't see 7k325t device (nor 2 over CPLD on JTAG chain).

open_hw_target is connected

count device display is 3 and is correct

but refresh_hw_device return empty chain and following error :

bad_numeric_conversion: negative overflow

same test with other computer under linux give same results.

 

any idea about this problem ?

thank's

 

florentp/FlP

0 Kudos
1 Solution

Accepted Solutions
Highlighted
Visitor e.charre
Visitor
1,657 Views
Registered: ‎02-06-2010

Re: JTAG device detection error : negative overflow

Jump to solution

Hi,

 

Yes, it's ok with vivado 2016.4

we will use this version instead of 2016.2

Thank's

 

FlP

View solution in original post

0 Kudos
6 Replies
Xilinx Employee
Xilinx Employee
1,278 Views
Registered: ‎08-01-2008

Re: JTAG device detection error : negative overflow

Jump to solution

can you uninstall and reinstall the cable driver by following the commands

 

  1. In a command prompt browse to your "C:\Xilinx\<version>\ISE_DS\ISE\bin\nt64" directory on 64-bit installs or "C:\Xilinx\<version>\ISE_DS\ISE\bin\nt" on 32-bit installs.
     
  2. To uninstall type the command:
    wdreg -compat -inf %cd%\windrvr6.inf uninstall
     
  3. To reinstall type the command:
    wdreg -compat -inf %cd%\windrvr6.inf install
Thanks and Regards
Balkrishan
--------------------------------------------------------------------------------------------
Please mark the post as an answer "Accept as solution" in case it helped resolve your query.
Give kudos in case a post in case it guided to the solution.
0 Kudos
Visitor florentp
Visitor
1,273 Views
Registered: ‎08-05-2015

Re: JTAG device detection error : negative overflow

Jump to solution

Hi,

 

I sent the command and result is same.

 

unplugged jtag cable

cd xilinx/vivado/2016.2/data/xicom/cable_drivers/nt64

wdreg -compat -inf  windrvr6.inf uninstall

wdreg -compat -inf windrvr6.inf install

 

log uninstall & install is OK completed successfully

plug jtag cable, detect 3 device on jtag chain but report bad numeric conversion (empty chain)

 

florentp

0 Kudos
Xilinx Employee
Xilinx Employee
1,230 Views
Registered: ‎01-10-2012

Re: JTAG device detection error : negative overflow

Jump to solution

Hi @florentp

 

Is your issue resolved? If NOT, then can you let us know how many devices and what devices are in your JTAG chain?

Is it possible that you have devices in JTAG chain not supported in Vivado? If so can you manually add the device info 

so that Vivado is able to detect.

 

https://www.xilinx.com/support/answers/61312.html

 

 

0 Kudos
Visitor florentp
Visitor
1,224 Views
Registered: ‎08-05-2015

Re: JTAG device detection error : negative overflow

Jump to solution

Hi,

 

Mannually add device seems a good idea which is not yet working :- )

Few test gives following results :

jtag device detection is ok under vivado 2014 (see picture in attachement)

devices are:

xc6vlx130t

xc2c64a

xc7k325t

These jtag devices are not detected under vivado 2016.2, so, as you say, I try to manually add device info in jtag_chain.csv file,

but launching c:\xilinx\vivado\2016.2\bin>hw_server -e "set device-info-file jtag_chain.csv"

and using url TSS-CPCI-AF379 (given by previous command) in open new target gives same results.

 

idcode,mask,irlen,name
i,i,i,s
0x8424a093,0xffffffff,10,1st
0x06e5d093,0xffffffff,8,2nd
0x43651093,0xffffffff,6,3rd

 

Thank's Florent PORTELATINE / FlP

vivado2014.1_chaine_jtag.png
jtag_undetected.jpg
0 Kudos
Moderator
Moderator
1,210 Views
Registered: ‎06-05-2013

Re: JTAG device detection error : negative overflow

Jump to solution
Hi Florent,

It is possible to try with 2016.3 or later. It was an issue with 2016.1 & 2016.2. If not then you can try the same with 2015.4 which should work for you.
Thanks
Harshit
-------------------------------------------------------------------------
Don’t forget to reply, kudo, and accept as solution.
-------------------------------------------------------------------------
0 Kudos
Highlighted
Visitor e.charre
Visitor
1,658 Views
Registered: ‎02-06-2010

Re: JTAG device detection error : negative overflow

Jump to solution

Hi,

 

Yes, it's ok with vivado 2016.4

we will use this version instead of 2016.2

Thank's

 

FlP

View solution in original post

0 Kudos