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Altera_Forum
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17 years ago

unable to scan device chain. cann't scan jtag chain

Hi, I am using Nios II Embedded Evaluation Kit (Cyclone III - EP3C25F324C6NES). Though it is having direct programming capability through the Usb cable. I like to test the Program...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

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Hi,

I have the Cyclone III FPGA Starter Board Reference Manula (Dated : - October 2007) I think this is the new manula available.

In that manula it was mentioned to add the Jumper to JP8 to work eith JTAG, Even though I added the Jumper even then the same error continues....

Please see below for the specifoed point from the document ...

"

JP8 : Adding the shunt enables configuration of the Cyclone III device

using the JTAG header and an external USB-Blaster. When the

shunt is not in place, the embedded USB-Blaster circuitry must

be used to configure the Cyclone III device. (The board ships

without the JTAG header populated.) "

Now what to do ???

Thanks,

Srinath.

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Did you try the embedded USB-Blaster ? In my understanding you have only to connect your PC with the USB port on the board. Is that working ? At least this should work, because this is according to the manual the default board configuration.