CS401 Assignment o1

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

a) B2C0:FA12        

Solution:

Segment address * 10 + offset address

B2C0H * 10H + FA12H     

C2612H

 

b) A100:12BE    

Solution:

    

Segment address * 10 + offset address

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

b) Compute the logical address, and the physical address.   

Solution: 

Logical address

6FA4h : 238Fh

Physical address

Segment address * 10 + offset address

6FA4H * 10H + 238FH

71DCF4h