How to load program to SSRAM

Altera_Forum · ‎04-11-2006

Hello !

I have a custom NIOS II system with STRATIX II and SSRAM.

I am doing this steps for load and start my system:

( All program sections placed in SSRAM)

1. Nios2 compilator create *.elf

2. I convert *.elf to *.bin with

"nios2-elf-objcopy.exe 1.elf -O binary --set-start 0 1.bin"

3. I init SSRAM with my *.bin

4. I reset NIOS.

In this case working only simple program ( printing constant string to LCD for example).

System crash when i writing C-code with variables.

How must I load *.elf to SSRAM correctly?

Thanks.

Sorry for my English

Altera_Forum · ‎04-15-2006

I'd start by trying out the Nios II IDE. Here's a document about how to use it (download/debug your code using it)

Altera_Forum · ‎04-17-2006

Hi Jools,

<div class='quotetop'>QUOTE </div>

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3. I init SSRAM with my *.bin[/b]

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How do you init SSRAM with *.bin?

I mean from which address.

And after initing SSRAM, how do you set your PC register?

In my system, my SDRAM_BASED = 0x1000000

Also,all my sectors exist in SDRAM

And I copy *.bin to SDRAM from address 0x1000020.

After booting, I set PC = 0x10001C8

Then everything work correctly.

Note:

exception sector occupied the following address:

FYI.

David