BLOCKING AND NON BLOCKING ASSIGNMENTS

BLOCKING ASSIGNMENTS:
--->The assignment must complete before the line is executed.
--->Operator is = use in blocking assignment.

NON BLOCKING ASSIGNMENTS:
--->The right hand side is evaluated immediately.
---->Operator is<=
always @(posedge clk)
 begin 
word[15:8] <= word[ 7:0]; 
word[ 7:0] <= word[15:8];
 end



FOR MORE REFERENCE CLICK HERE