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CS401 Assignment 01 Fall 2020 Solution / Discussion

CS401 Assignment 01 Fall 2020 Solution / Discussion

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CS401_Assignment_No_01_Solution_Fall_2020

CS401_Assignment_No_01_Solution_Fall_2020

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CS401 Assignment No.1 2020 Solution

Question No. 1: Calculate the physical address for the following set of segment offset pairs.
B2C0:FA12
Solution:
B2C0H * 10H + FA12H
C2612H

A100:12BE
Solution:

A100H * 10H + 12BEH
A22BEH

Question No. 2: Suppose Data Segment (DS) = 6FA4h and offset = 238Fh.

Calculate the lower and upper ranges for Data Segment.
Solution:
For Lower
Segment address * 10H + 0000H
6FA4h *10H
6FA40H

Upper range
Segment address * 10H + FFFFH
6FA4h * 10H
6FA40H + FFFFH
7FA3F4

Solution:
6FA4h : 238Fh
6FA4H * 10H + 238FH
71DCF4h

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Q 1. Calculate the physical address for the following set of segment offset pairs.

1. B2C0:FA12
2. A100:12BE

Note: Write all the intermediate steps in detail.                                             Marks (10)

Q 2. Suppose Data Segment (DS) = 6FA4h and offset = 238Fh.

1. Calculate the lower and upper ranges for Data Segment.

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CS401 Assignment 1 Solution:

Question No. 1:  Calculate the physical address for the following set of segment offset pairs.

a) B2C0:FA12

Solution:

B2C0H * 10H + FA12H

C2612H

b) A100:12BE

Solution:

A100H * 10H + 12BEH

A22BEH

Question No. 2: Suppose Data Segment (DS) = 6FA4h and offset = 238Fh.

a) Calculate the lower and upper ranges for Data Segment.

Solution:

For Lower

Segment address * 10H + 0000H

6FA4h *10H

6FA40H

Upper range

Segment address * 10H + FFFFH

6FA4h * 10H

6FA40H + FFFFH

7FA3F4

Solution:

6FA4h : 238Fh

6FA4H * 10H + 238FH

71DCF4h

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