TinyMicro datapath X62350

Design the datapath of the TinyMicro. The datapath should be parametrizable with the width of the data (DWIDTH) and the width of the memory address (AWIDTH). Use the default values shown in the specification.

Specification

module datapath (Data_Address, ReadData, WriteData, Const, EnA, EnB, Op,
                 MemConst, MemAlu, Zero, Positive, clk, rst);
    parameter DWIDTH=6;
    parameter AWIDTH=4;
    output [AWIDTH-1:0] Data_Address;
    input [DWIDTH-1:0] ReadData;
    output [DWIDTH-1:0] WriteData;
    input [DWIDTH-1:0] Const;
    input [1:0] Op;
    input EnA, EnB, MemConst, MemAlu, clk, rst;
    output Zero, Positive;

Input

• ReadData is the data coming from memory.

• Const is the constant coming from the control unit and encoded in the instruction register.

• Op is the ALU operation.

• EnA and EnB are the enable signals of registers RA and RB.

• MemConst is the signal that selects between ReadData (0) and Const (1).

• MemAlu is the signal that selects the value to be written to the registers between data coming from memory/constant (0) or from the ALU (1).

• clk is the clock signal of the circuit.

• rst is the reset signal of the circuit.

Output

• Data_Address is the memory address.

• WriteData is the data to be written into memory.

• Zero indicates whether the value stored in RA is zero.

• Positive indicates whether the value stored in RA is positive.