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Question 2

Design a very simple CPU that can access 64 bytes of memory, each byte being 8 bits wide. The CPU must do it by outputting a 6-bit address on its output pins A[5...0] and reading in the 8 bit value from memory on its inputs D[7...0].

AND

JMP

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AC AC+1

Answer the following question: Give reasons, why this is a fairly impractical CPU?

Assignment Help Answers with Step-by-Step Explanation:

4. Lack of Conditional Branching: The CPU lacks conditional branching instructions, which are essential for making decisions in programs. The only control flow instruction is JMP (unconditional jump), which makes it challenging to implement conditional statements like if-else or loops.

5. No Support for I/O: The CPU lacks instructions or hardware support for input and output operations, making it impossible to interact with external devices or perform useful tasks beyond pure arithmetic and logic operations.

10. Lack of Interrupts: The CPU does not support interrupt handling, which is crucial for multitasking and responding to external events in real-time systems.

while this CPU design may serve as a simple educational or conceptual exercise, it is far from practical for real-world computing tasks due to its extreme limitations in terms of memory, instruction set, data width, and overall functionality. Modern CPUs are highly complex and optimized for a wide range of applications, making them vastly superior in terms of performance and versatility.