Why it occur overflow??
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I modeled simulink for hdl coder conversion and i used a fixed point tool box. But it occur overflow like a below figure. You can see the below figure, fixed point tool has simulation result from 0 minimum to 32.958984375 maximum value. But i applyed data fixdt(0,16,9). It can cover sufficient range from 0 to 32.958984375. But it occured overflow when i run for pressing button of 'simulate with embedded types'. So i applied it on a trial about range fixdt(0,20,10) (I thinked that it very sufficient range). However, it more increased overflow. why it occur overflow??
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Kiran Kintali
il 10 Lug 2020
The overflow behavior is based on what kinds of operations are happening on the variable. Is it in a feedback look like a for-loop where there error is accumulating and causing overflows etc., Please share your code (design and testbench) if possible for better guidance. It would hard to diagnose from just a screenshot.
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Kiran Kintali
il 10 Lug 2020
Hi Ki, bmp file is missing; it will be hard to figure out ranges without a proper testbench. Thanks
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