genvar

Verilog Reserved Word: genvar

Purpose

The genvar reserved word is used as the index control variable by generate for loops.  The genvar variable is restricted to a positive or 0 value.  Negative values, X, and Z values cannot be assigned to a genvar variable.

Syntax

generate
genvar i;
for (i = 0; i < = 7; i = i + 1)
 begin: i
   adder8 add (sum [(i * 8) + : 8], co [i + 1],
                 a [(i * 8) + : 8], b [(i * 8) + : 8], ci );
 end
endgenerate