Combinational Logic and Verilog
XORs and XNORs
XOR
XOR gates
Cascading XOR gates
Parity Generation
74x280 9-bit odd/even parity generator
Verilog for 9-input parity checker
Structural Verilog for 74x280 parity checker
Parity generation and checking for a 8-bit-wide memory
Error-correcting circuit for a 7-bit Hamming Code Exors for parity see next slide
Error-correcting circuit for a 7-bit Hamming Code
Behavioral Verilog for Hamming error correction This is the same code as in last slide
Tree and Iterative circuits
Fig XORs in comparators
Big OR functions
Iterative combinational Circuits
Iterative Comparators
Iterative comparator of equality
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
12-bit comparator using 74x85 Iterative circuit
Verilog for 74x85 Five versions of Verilog comparator
Verilog comparator
Verilog Comparator
74x682 8-bit comparator EQ and Greater
74x682 8-bit comparator
Arithmetic Conditions (predicates) derived from 74x682 outputs