Chapter 5

Sequential Statements

Foundation Express interprets sequential statements, such as A:= 3, in the order in which they appear in code. VHDL sequential statements can appear only in processes and subprograms.

This chapter describes and illustrates the different types of sequential statements in the following sections.

• “Assignment Statements and Targets”
  
  
• “Variable Assignment Statements”
  
  
• “Signal Assignment Statements”
  
  
• “if Statements”
  
  
• “case Statements”
  
  
• “loop Statements”
  
  
• “next Statements”
  
  
• “exit Statements”
  
  
• “Subprograms”
  
  
• “return Statements”
  
  
• “wait Statements”
  
  
• “null Statements”