ALU with write back

CEDAR Logic Circuit, 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 8 required are as follows FUNCTION NAME OPCODE OUTPUT ADDA 0x03 A + operand SUBA 0x05 A – operand ANDA 0x02 A AND operand ORA 0x06 A OR operand EORA 0x07 A XOR operand LDAA (immediate) 0x0A load A with # LDAA (direct) 0x0E load A with memory STAA 0x0D 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 When testing this you will want to have a 4 bit hex keypad for the opcode and one for the operand. However, when you submit, I do not need or want the keypads, so get rid of them prior to submission. OUTPUTS S0-S3 - NONE C3 - Attach to LED