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Kun_Digital_Design's avatar
Kun_Digital_Design
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3 years ago

Failure for initialization ROM memory by using $readmemh task

Hi, I initialized my ROM memory (instr_mem) by using the $readmemh task. The ROM was successfully complied and simulated, but the waveform show 32'hxxxxxxxx in instr_mem. It seems the 'instr_mem' ...
RichardT_altera's avatar
RichardT_altera
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3 years ago

The $readmemh does work with Quartus. I suspecting design coding style.

Could you try to integrate the Quartus ROM template in your design?

Right click on any design file -> Insert template -> Verilog/VHDL -> RAMs and ROMs -> Dual Port ROM.


Kun_Digital_Design's avatar
Kun_Digital_Design
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3 years ago

Hi,

I have integrated a Quartus dual port ram template in my design. It still doesn't work. I used the RTL simulation to generate the waveform. The waveform of ram instantiation still shows 32'bxxxxxxxxxxxxxxxx.

I attached the design .qar file to this post.