Unsupported Verilog Language Constructs

Foundation Express does not support the following Verilog constructs.

• Unsupported definitions and declarations
  
  
• Unsupported statements
  
  
• Unsupported operators
  
  
• Unsupported gate-level constructs
  
  
• Unsupported miscellaneous constructs
  
  

Constructs added to the Verilog Simulator in versions after Verilog 1.6 might not be supported.

If you use an unsupported construct in a Verilog description, Foundation Express issues a syntax error such as the following.

event is not supported

Unsupported Definitions and Declaration

Foundation Express does not support the following Verilog constructs.

• Primitive definition
  
  
• Time declaration
  
  
• Event declaration
  
  
• Triand, trior, tri1, tri0, and trireg net types
  
  
• Ranges and arrays for integers
  
  

Unsupported Statements

Foundation Express does not support the following Verilog constructs.

• Defparam statement
  
  
• Initial statement
  
  
• Repeat statement
  
  
• Delay control
  
  
• Event control
  
  
• Wait statement
  
  
• Fork statement
  
  
• Deassign statement
  
  
• Force statement
  
  
• Release statement
  
  
• Assignment statement with a variable used as a bit-select on the left side of the equal sign
  
  

Unsupported Operators

Foundation Express does not support the following Verilog constructs.

• Case equality and inequality operators (=== and !==)
  
  
• Division and modulus operators for variables
  
  

Unsupported Gate-Level Constructs

Foundation Express does not support the following Verilog gate-level constructs.

• nmos
  
  
• pmos
  
  
• cmos
  
  
• rnmos
  
  
• rpmos
  
  
• rcmos,
  
  
• pullup
  
  
• pulldown
  
  
• tranif0
  
  
• tranif1
  
  
• rtran
  
  
• rtranif0
  
  
• rtranif1
  
  

Unsupported Miscellaneous Constructs

Foundation Express does not support hierarchical names within a module.