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Altera_Forum's avatar
Altera_Forum
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14 years ago

Help!!!!! SDRAM interface Cyclone III.

I have a poject with SDRAM. I can create a interface with 128 MB SDRAM (BOTTOM or TOP). but, i don't know how to use full 256 MB SDRAM (BOTTOM and TOP). I use SOPC Builder to create system. Can you h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If it doesn't work then YES, something is wrong. But there could be many issues. Memory controller not working, wrong reset levels, bad memory chip connections, etc... Place On-Chip RAM in the design and start Nios from there. Upload memory checking software and run memory tests.