Enhancing Data Path M 4-bit Reg X A L U

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Presentation transcript:

Enhancing Data Path M 4-bit Reg X A L U We can add a memory and a register file to data path as shown Data from ALU can be written in reg file, memory, and registers Data from reg file and mem unit can be selected for register input A L U 4-bit Reg M X LD1 M2 M1 LD2 OpCode enable Keyboard Mem Unit Mem Addr WM EM File Reg Addr WR ER

Addition for multiply M 4-bit X A L U For multiplication, we add a shift unit and and M-reg M-reg can be loaded with output of ALU and copied on bus Shift unit can shift operand one bit left or right with or without M-register contents Mem Unit Mem Addr WM EM Reg File Reg Addr WR ER A L U 4-bit M X LD1 M2 M1 LD2 OpCode Input enable M- LDM

Complete Block diagram Mem Unit Mem Addr WM EM Reg File Reg Addr WR ER A L U 4-bit M X LD1 M2 M1 LD2 OpCode Input enable M- LDM