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Altera_Forum
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14 years ago

using ALTASMI_PARALLEL and EPCS controller in one project

Hi, I would like to use the ALTASMI_PARALLEL and the EPCS Serial Flash controller with QSYS use in one project. But when I compile the fitter does give an error: asmi:asmi_inst|asmi_altasmi_...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Found a solution!

Thanks to a Altera SR I've been able to implement the ALT_ASMI parallel module together with the EPCS controller of the NiosII.

I will shortly describe how I achieved this:

1. Export EPCS interface from NiosII to toplevel

2. Hack the ALT_ASMI_PARALLEL module, disconnect the stratixiii_asmiblock and connect the EPCS signals to the toplevel

3. Instantiate stratixiii_asmiblock in the project

4. Make a multiplexer that switches between the NiosII and the ASMI parallel module, you can use the busy signal of ASMI parallel. Make sure that not both modules are accessing the flash at the same time.