1. Combinational Logic and Verilog

2. XORs and XNORs

3. XOR

4. XOR gates

5. Cascading XOR gates

6. Parity Generation

7. 74x280 9-bit odd/even parity generator

8. Verilog for 9-input parity checker

9. Structural Verilog for 74x280 parity checker

10. Parity generation and checking for a 8-bit-wide memory

11. Error-correcting circuit for a 7-bit Hamming Code Exors for parity see next slide

12. Error-correcting circuit for a 7-bit Hamming Code

13. Behavioral Verilog for Hamming error correction This is the same code as in last slide

14. Tree and Iterative circuits

15. Fig.6.74. XORs in comparators

16. Big OR functions

17. Iterative combinational Circuits

18. Iterative Comparators

19. Iterative comparator of equality

20. 74x85 4-bit comparator Output of A greater than B Output of A less than B output of A equal B 4-bit of A and 4-bit of B Input of A less than B Input of A equal B Input of A greater than B

21. 12-bit comparator using 74x85 Iterative circuit

22. Verilog for 74x85 Five versions of Verilog comparator

23. Verilog comparator

26. Verilog Comparator

27. 74x682 8-bit comparator EQ and Greater

28. 74x682 8-bit comparator

29. Arithmetic Conditions (predicates) derived from 74x682 outputs