Basic Types of CPU

Question 1

According to Instruction Set Architecture:

Answer 1

1. Accumulator-based
2. General Purpose Register Type
3. Stack Machine

Question 2

1-operand CPU

Answer 2

Accumulator-based

Question 3

Where intermediate arithmetic and logic results are stored.

Answer 3

Accumulator-based

Question 4

What are the different registers in the Accumulator-based CPU?

Answer 4

A, PC, X, SP, Flags register

Question 5

What is the equivalent accumulator-based data transfer of this code?
y = x

Answer 5

load x
store y

Question 6

What is the equivalent accumulator-based of this code?
z = b + c

Answer 6

load b
add c
store z

Question 7

What is the equivalent accumulator-based of this code?
z = (b-c) * d

Answer 7

load b
sub c
mul d
store z

Question 8

The most common type of CPU, Intel 80x86 is of this type but with enhanced/modified features.

Answer 8

General Purpose Register (GPR Type)

Question 9

Other GPR-type CPUs such as _______:________ registers cannot be divided into higher and lower bytes

Answer 9

PDP-11: 16 bit

Question 10

In PDP-11, ___ is used as PC and ___ serves as SP

Answer 10

R7, R6

Question 11

Any computer system that has no general purpose register and simply uses the stack for computations falls on this category

Answer 11

Stack Machine

Question 12

What are the registers in a stack machine?

Answer 12

PC
X (serves as memory address register for operands)
Flags

Question 13

In Stack Machine, arithemetic expressions should first be translated to ________ form to easily write a program for a stack

Answer 13

postfix