Honored Contributor
Honored Contributorcan anybody help me? thanks in advance!
using cable "usb-blaster [usb-0]", device 1, instance 0x00
pausing target processor: ok
reading system id at address 0x00102098: verified
downloading 00800020 ( 0%)
downloading 00810000 (89%)
downloaded 72kb in 0.9s (80.0kb/s)
verifying 00800020 ( 0%)
verify failed between address 0x800020 and 0x80ffff
leaving target processor paused
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--- Quote End --- There are so many reasons for the Verify fail, that is why it is so popular. Here are a few that I have seen 1. Bad memory interface, physical board problem 2. Timing issue with memory 3. Lack of non-volatile memory. This confuses processor. If you have problems with downloading programs from the IDE, I suggest to try reconfigure your FPGA with a "simple" test design that is a sub-set of your design. For example to isolate if your problem is SDRAM or SRAM, try to use/add onchip_memory to run hello world from. If the onchip_memory program runs, but loading the program to SDRAM/sram still fails, I would take a closer look at the memory timing or phase setting.
