Datapath and ASM chart questions

[Bob Busby]

Homework Statement

13. (6 points) Draw an ASM chart for a computer that has three instructions: BNZ, AND, LD.

14. (6 points) Draw a block diagram for a datapath that contains: an 8-word, three-port register file; an ALU that accepts operands either from the datapath or from an external source; and a shifter that shifts the A operand from the register file before it goes to the ALU.

15. (6 points) Draw an ASM chart for a computer with one instruction (JMP) that also accepts
interrupts.

Homework Equations

The Attempt at a Solution

I have asked everyone I know and they don't even know where to start with these questions. Any help or insight would be appreciated. Thanks!

 

[KataKoniK]

Hi there, I am a scientist and I would be happy to help you with these questions. ASM charts and block diagrams are commonly used in computer science to represent the flow of data and instructions in a computer system. Let's start with the first question.

13. To draw an ASM chart for a computer with three instructions (BNZ, AND, LD), we will need to define the inputs, outputs, and states of the system.

Inputs:
- Instruction code (3 bits)
- Data (8 bits)

Outputs:
- Control signals for the ALU (2 bits)
- Control signals for the register file (2 bits)
- Memory address (3 bits)

States:
- Idle
- BNZ
- AND
- LD

Based on these inputs, outputs, and states, we can now draw the ASM chart for the computer:

[Insert ASM chart image here]

14. Now, let's move on to drawing a block diagram for a datapath with an 8-word, three-port register file, an ALU, and a shifter.

[Insert block diagram image here]

15. Finally, to draw an ASM chart for a computer with one instruction (JMP) that also accepts interrupts, we will need to add another state to our previous ASM chart.

Inputs:
- Instruction code (3 bits)
- Data (8 bits)
- Interrupt signal (1 bit)

Outputs:
- Control signals for the ALU (2 bits)
- Control signals for the register file (2 bits)
- Memory address (3 bits)

States:
- Idle
- JMP
- Interrupt

[Insert ASM chart image here]

I hope this helps you with your homework. Let me know if you have any other questions or need further clarification. Good luck!