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  1. Xilinx - All Programmable
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  3. AR# 29864: 12.1 EDK - I cannot download bitstreams to the targeted FPGA, even though I can do this with iMPACT

AR# 29864

12.1 EDK - I cannot download bitstreams to the targeted FPGA, even though I can do this with iMPACT

Description

I can program the "download.bit" file into the FPGA using iMPACT.

However, when I select Download Bitstream in the XPS GUI, the following error occurs:
 

ERROR:iMPACT:583 - '<position_number>': The idcode read from the device does not match the idcode in the bsdl File.
INFO:iMPACT:1578 - '<position_number>': Device IDCODE : 00000000000000000000000000000000
INFO:iMPACT:1579 - '<position_number>': Expected IDCODE: 00000010101010010110000010010011

Solution

This error indicates that you did not specify the correct JTAG chain position number for the targeted FPGA.

To resolve this issue, open the "download.cmd" file and pinpoint the correct position number after "-p".

For example, if the targeted FPGA is the fourth chip on the JTAG chain, the statements in "download.cmd" should look similar to the following:
 

assignfile -p 4 -file implementation/download.bit
program -p 4

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
34609 12.x EDK - Master Answer Record List N/A N/A
AR# 29864
Date 03/24/2015
Status Active
Type General Article
Tools
  • EDK - 12.1