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Objectives
We will learn how to design and build simple mini-CPU
Design an CPU for which must satisfy the following requirements:
- 5-bit addition.
- Multiply by 2 and divide by
2 (shift left/right operation).
- It must have 2 5-bit
registers that hold values for the calculator.
- It takes in a 8-bit value as
input (3-bit instruction set & 5-bit data).
- It gives out a 5-bit value
as result of the calculations.
- Each instruction will happen
during one clock cycle.
Detail Requirements:
- 000 XXXXX - clear the two
registers (output 0000).
- 001 XXXXX - put XXXXX value
into register 1.
- 010 XXXXX - put XXXXX value
into register 2.
- 011 XXXXX - take previous
result & store into register 2.
- 100 XXXXX - add register 1
& register 2 values (output result).
- 101 XXXXX - multiply
register 2 value by 2 (output result).
- 110 XXXXX - divide register
2 value by 2 (output result).
- 111 XXXXX - masking (ANDing) register 1 and register 2.
Note: You are required to use bus for this lab. For
Simulation, do the following steps:
- Clear the two registers
- Put some value into regsiter
1
- Put some value into register
2
- Add the 2 numbers together
- Take the previous result and
put into register 2
- Multiply register 2 by 2
- Divide register 2 by 2
- (DO THIS THREE TIMES WITH
DIFFERENT VALUES EACH TIME)
Grading: Show your circuit design & demonstrate your
simulation result to the TA or professor at office hours during week 10.
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