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DescriptionQ757
Q757DesignDVASIC interview problem

Decode Z wildcards without hiding X

TechniquesDesignSystemVerilogCase statementsX propagation
DifficultyEasy
TopicRTL Design
LanguageSystemVerilog
Format4 choices
01

Problem

A command decoder may use Z or ? bits as wildcards in its case items, but an unknown X on the selector must not silently match a valid command. Which construct fits that requirement?

02

Answer choices (4)