what would be the output of assign if input is x

[SSINGHAL]

Hi,


I need some information:-

assign a = (b) ? 1'b1:1'b0;

What will be the output of this :

1) if b =1'bx ;

2) if b = 1'bz;

Regards,
SSINGHAL

 

[poluekt]

In both cases a=1'bx.

 

[tariq786]

poluekt how would you prove the case when b = 1'bz

please explain

 

[FvM]

how would you prove the case when b = 1'bz

It's exactly specified in Table 5-21—Ambiguous condition results for conditional operator of IEEE Std 1364-2005.

 

[dave_59]

Table 11-20 in the current version the 1800-2009 LRM.