Slide 76 of 93
Notes:
This implementation of the 8-bit register uses the 'STABLE attribute to determine if the input satisfies the setup time requirement of the register. If the setup requirement is not met, the body of the IF statement will not execute, and the value on a will not be assigned to b.
Note that although the process checks that clk and enable are ‘1’ to store the data, it does not does not consider the possibility that clk may have transitioned to ‘1’ from either ‘X’ or ‘Z’.
