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VHDL - MOD function synthesis

 
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Old 09-23-2003, 12:29 PM   #1
Default MOD function synthesis


Hi folks,

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

rgds,
praveen


praveen
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Old 09-24-2003, 01:45 AM   #2
Allan Herriman
 
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Default Re: MOD function synthesis
On 23 Sep 2003 04:29:09 -0700, (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.

Regards,
Allan.


Allan Herriman
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