How to include custom onchip memory block into the Linker section mappings ?

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You need to edit your IP's *_hw.tcl file with a text editor. Find the section describing the Avalon Slave interface for your memory component, that should be like this:

# 
#  connection point iname
#  
add_interface iname avalon end

(where iname is the name of your avalon interface)

And add a parameter in the list:

set_interface_property iname isMemoryDevice true

replacing iname with the name of your interface.

Then regenerate the QSys project and recompile.

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Hehe !!! Worked

This is exactly what I want

I can now select my peripheral in linker script pulldown menu. Trivial thing is ,In settings.html file attribute name is empty.

Thank you