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Altera_Forum's avatar
Altera_Forum
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13 years ago

uncontrolled SDRAM content change

Hi, I use a code which checks external SDRAM () by writing 0xAAAA and 0x5555 patterns. But the code always return an error code! When I check step by step SDRAM content with NIOSII IDE I can ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I don't think it is a cache issue because I only access SDRAM with the IOWR and IORD commands. The code is very simple and never access to SDRAM by another way.

And even no access to SDRAM, a lot of memory cells content are changed at every step (using F5 step with debug) and that have no sense for me!

I will try using pointers