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Altera_Forum
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15 years ago

how to perform large number(128bit) division

Hi all, I'm designing a system using simple LPM divider, it works fine below 64 bits number, but when the number is larger than 64 bits, it gives me an error stating that LPM cannot support mor...
Altera_Forum's avatar
Altera_Forum
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15 years ago

You can write your own function using a serial approach for 'long divide'. It will take up to 128 clocks (and a few) to calculate the result. It will use reasonably few rersources compared to a direct combinatorial approach.

If you need speed that you have to pipeline every stage which will be a lot more work.