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Altera_Forum's avatar
Altera_Forum
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14 years ago

running program in SRAM doesn't work

Hi all, I am running my C program in NiosII and I need to print out the result on the console. There are a 512KB SRAM and an 8MB SDRAM on the board. The program works fine with the SDRAM. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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i have change the system frecuency(100mhz to 50mhz because the SRAM high-speed access time is 10ns)then i dont have error in the TcL test. MOreover i change the jtag_uart IRQ(0 to 16) and after all of this the downloading and verifying is completed but the programs doesnt seem work, there arent messages on the nios console.

why is the nios program downloaded and verified changing IRQ?

what happens with the console?

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Any time I've run into this situation where the ELF file downloads and verifies properly, but there is no output to the Nios II Console, it has been due to a timing issue with the Quartus design.

If you haven't already, you should run TimeQuest from within Quartus II and constrain the clocks. Create an SDC file from this, then re-compile your Quartus project. Be sure to include the newly created SDC file in your project before re-compiling. Don't forget to program your FPGA with the new SOF before running the software.