data error!help

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look at the picture,why CpuData is wrong,but RdBuf is right,

assign CpuData = ( CpuDataVld &HRCW_over_flag )? {8'h00,CpuDataOut} : 16'hzzzz ;

assign RdBuf = ( CpuDataVld &HRCW_over_flag )? CpuDataOut : 8'hzz ;

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Hi,

is your Signaltap capture clock synchronous to the data you try to capture ?

Kind regards

GPK

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Hi,

is your Signaltap capture clock synchronous to the data you try to capture ?

Kind regards

GPK

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Sorry ,

maybe I was a little too fast.

Is your picture a signaltap or a simulation output ? Can you zoom in so that it is possible to see all value ?

Kind regards

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Sorry ,

maybe I was a little too fast.

Is your picture a signaltap or a simulation output ? Can you zoom in so that it is possible to see all value ?

Kind regards

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Hi,

you mentioned that RdBuf is a "reg", but as far as I know you can't use "assign" for reg.

assign RdBuf = ( CpuDataVld &HRCW_over_flag )? CpuDataOut : 8'hzz ;

CpuData is a Toplevel port ? What is connected to this port ?

assign CpuData = ( CpuDataVld &HRCW_over_flag )? {8'h00,CpuDataOut} : 16'hzzzz ;

According to your assignment CpuData is only during CpuDataVld "1" = CpuDataOut. With

CpuDataVld "0" you switch back to "z". Maybe somebody is driving the port ?

Can you zoom in your traces, in orde to see what values are caaptured ?

Kind regards

GPK