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how to check delay in interrrupts?

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samiksha

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i'm designing an interrupt controller in verilog. the problem i'm facing is when our first interrupt acknowledgement (inta)signal comes, we'll write data on data bus. when 2nd inta comes another data shud be written nd similarly for the third inta. nw the point is how to check three pulses coming on the same signal inta. nd giving different output to data bus on three consecutive inta.
waiting for ur answers
thanku
 

You can easily check it in simulation...
Do you want to check it on hardware...?
If you want to do so use a digital storage Oscope.
 

hum,i'm not really understand your question.

you wan to check the inta input pulse? the interrupt pulse should feed in from external, so you should apply the interrupt signal to your interrupt controller. so i think there is no worry about the interrupt input signal and you can simply see the signal using oscilloscope.
 

just use a 2-bit counter to count the external interrupt. Then you will know which data should be placed on the bus.
 

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