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Honored Contributor
Honored ContributorSRAM Addressing in QSYS
Hello I'm using a DE2-115 board with 2 MB SRAM (Address width 20. Data width 16). I used Qsys "Generic tri state controller" to attach the memory to the NIOS processor. Problem: How to acc...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- finally I foud the answare my self: set address width to 21 in generic tri state controller and detach the less significant bit (bit 0) from the sram addr bus. --- Quote End --- address width in generic tri state controller is the byte address arrange of SRAM, not the address bus width. Typically, SRAM has two bits byte-enable input, that's to say, the address bus width + log2(byte-enable width) is the address width of byte. Therefore, do not connect MLB of the address from generic tri state controller to any wire, let it free.
