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Altera_Forum
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16 years ago

Memory Test fails whith 256-MB DDR2

When using the SDRAM DDR2 with 64-bit data bus width, the memtest fails! And the failure occurs only in specific locations (spans of 0x10): --- Quote Start --- ERROR: DDR2 was not filled...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I seem to recall that the design uses a reduced number of row addresses to reduce the SDRAM span (it's too large to hook up to the Nios II instruction master). That memory device should have it's own presets so you may want to go into the SDRAM controller and re-apply the preset to make sure the parameterization is correct.