Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Avalon -> Dual Port RAM -> custom hardware interface

Hi All, I am creating a custom memory mapped device and need to create an 8k byte block of dual port RAM with write-only access from NIOS, and read-only access from the custom hardware side. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Creating what you want is as simple as the attached - a VHDL 'interface' that contains the mapping from Avalon signals to RAM signals. Use the component generator to build a _hw.tcl and export the ram_xx signals as a conduit. You can then instantiate the RAM and the control logic on the other port of the RAM outside the SOPC/Qsys system.

Cheers,

Dave