Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Verify Failed

Hello everybody. I'm having problems with a custom board. Using Quartus 4.2 and NIOS1.1 everything works fine. I decided to move to Quartus 5.01 and NIOS II 5.01 and the same projects ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

luisalba,

I have had a similar problem. I believe it has to do with my trace lengths on my JTAG lines. We have a couple of custom boards now, the last 2 I have interfaced with the USB cable and latest versions of Quartus.

With one of our boards, shorter trace lengths, I have no problems at all. With the other, I run into problems when trying to load large programs into SDRAM. Although, my flash programmer works just fine. I can also write to the FPGA without a hitch, as well as the configuration device. I only have problems loading programs to SDRAM.

For this project try using your old ByteBlasterMV. This is a slower device and works just fine for me.

When you lay out your next board, give those JTAG lines a little more attention.

Doug