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Altera_Forum
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16 years ago

Programming a custom board without flash memory

I have a custom board (Stratix-II with an EP2S90F1020C3). Right now the functionallity is only described in HDL and it's working fine. However, the board does NOT have any flash memory. Now I w...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

the actual problem was that the FPGA configuration has been deleted right after the downloading the sof file. as I mentioned, it's a custom board and I had to set "reserve unsed PINs" to "As input tri-stated". Now the configuration remains in the FPGA and I can download my NIOS software.

However now I have another problem which probably results of the reset signal which is connected to vcc. I will try the suggested solution and use a reset generator. Hope it will work ;-)

And I still have this warning that the JTAG clock is unknow. I guess this only concerns the timing analysis though ..

-- Thanks a lot guys :-)

If there are any other (simpler) soultions than the reset generator for the reset problem I would appreciate :-)

edit: here's the current error message I get, probably as a result of the reset problem ..

--- Quote Start ---

Using cable "USB-Blaster [USB-0]", device 3, instance 0x00

Pausing target processor: not responding.

Resetting and trying again: FAILED

Leaving target processor paused

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