SIMULATION ALU with write back 9

SIMULATION #9 ALU with write back There is one major change for this lab. You no longer need an output LED Display. The outputs will be stored back into A. This creates a timing issue that you will need to handle. A WB (write back) register is suggested. Have your clock be a single pulse generator that you control so you can see what occurs at each step. The Opcode for the 6 required functions (8 total) are as follows FUNCTION NAME OPCODE OUTPUT ADDA 0x02 A = A + operand SUBA 0x06 A = A – operand ANDA 0x04 A = A AND operand ORA 0x01 A = A OR operand EORA 0x07 A = A XOR operand LDAA (immediate) 0x09 load A with # LDAA (direct) 0x0A load A with memory STAA 0x0C store A to memory The full adder should have the following inputs and outputs. INPUTS Opcode - Attach to a 4-bit hex keypad Operand - Attach to a 4-bit hex keypad OUTPUTS S0-S3 - NONE C3 - Attach to LED