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Old 09-23-2003, 12:29 PM
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Default MOD function synthesis

Hi folks,

could any one suggest me what is the hardware taken for
implementing a MOD function in VHDL.

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Old 09-24-2003, 01:45 AM
Allan Herriman
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Default Re: MOD function synthesis

On 23 Sep 2003 04:29:09 -0700, [email protected] (praveen) wrote:

>Hi folks,
> could any one suggest me what is the hardware taken for
>implementing a MOD function in VHDL.

a <= b mod c

If c is a power of 2 (= 2 ** N), a will get the lower N bits of b,
with the upper bits zeroed.
IOW, there is no logic generated, just connections.

Most synthesis tools will issue an error if c is not static, or not a
power of 2.

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