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Altera_Forum's avatar
Altera_Forum
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14 years ago

How to access SRAM on CycloneIII dev kit - not via nios !

Hi, I've been searching the forums for quite some time, and couldn't find an answer to my problem. I'm trying to access the ssram on the CycloneIII Starter kit board. however, from the SSR...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I think you are writing 32bit data with byte addressing, then you write four times on the same physical address (e.g. 0,1,2,3 all are written to address 0, then 4,5,6,7 all to address 4 and so on). When using 32bit accesses, addresses must be multiples of 4.

I think you simply have to discard two lower bits of flash_ssram_a:

assign flash_ssram_a[10:2] = ram_cnt[9:1];