delay measurement with modelsim

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dhanasingaraja

New Member

• Feb 20, 2012

• #1

Hi,

I wanna measure delay of a ripple carry adder from modelsim simulation.program works fine.I can see the output waveforms also.but i can't find any delay between inputs and output even with zoom view also.i have attached my output screenshot


pls..... help me

 

Sceadwian

Banned

• Feb 20, 2012

• #2

There is no attachment, you'll also need to post the schematic along with the trace.

 

D

dhanasingaraja

New Member

• Feb 20, 2012

• #3

this is my output wavewform

 

Sceadwian

Banned

• Feb 21, 2012

• #4

That waveform is useless without a schematic. And if this is a simulator then you won't see a delay, most simulators use behavioral models for logic gates not simulated silicon, you'd have to get the delay from the datasheet of the actual hardware you'll be using.

 

crutschow

Well-Known Member

Most Helpful Member

• Feb 22, 2012

• #5

You need a Spice type simulator to show circuit delays.