Cannot download code using JTAG interface in iMPACT

[SphinX]

iMPACT

Salam,

When i use iMPACT to download my code (top.bit) using JTAG interface, it says top.msk doesn't exist and stop the programming procedure ?

What is the *.msk file ?

I have synthesized and implement the design correctly.

Thanks

 

[echo47]

iMPACT

Beats me. Maybe you have readback enabled or something.

The iMPACT manual says:
MASK File: The mask (.msk) file indicates which bits are configuration bits and which ones are not. This file is needed to do a verify operation on a Virtex family device using the MultiLINX Cable. This file is generated during the implementation process (BitGen) if readback is enabled in the "Configuration Template".

The bitgen manual says:
msk: A binary file that contains the same configuration commands as a .bit file, but has mask data where the configuration data is. This data should NOT be used to configure the device. If a mask bit is 0, that bit should be verified against the bit stream data. If a mask bit is 1, that bit should not be verified. Produced when the -m option is specified.

The Development System Reference Guide says:
msk: File used to compare relevant bit locations when reading back configuration data contained in an operating Xilinx device.

 

[SphinX]

iMPACT

Salam great echo47,

The problem is solved when i unchecked the "Verify" option in the Program Option pop-up menu.

I have successfuly synthesised and program my first design

But i have noticed thing i don't know is it normal or not ?

In some times, when i enable the verify option it state that the programming is unsuccessfuly but it's not, the code works fine.

Why ?

Thanks for your help,
I will press "Helped me" for you

Bye

 

[echo47]

iMPACT

Thanks, I'm glad I could help!

Now for those occasional errors ... maybe check your JTAG signal quality with an oscilloscope. I had some trouble with poor quality digital signals in the small cable between the Parallel Cable IV unit and my FPGA board. I added some termination resistors and a better ground, and the problem disappeared.

 

[bamdad]

Re: iMPACT

As far as I know, you cannot verify in serial modes, is that true?