Question

1. In real-address mode, convert the following segment offset address to a linear address: 0950:0100

2. In real-address mode, convert the following segment offset address to a linear address: 0CD1:02E0

3. What is the duration of a single clock cycle (in nanoseconds) in a 3.4 GHz

4. A hard disk rotates at 4200 RPM (rotations per minute). What is the time of one rotation in milliseconds?

5. Which Intel processor was the first member of the IA-32 family?

6. Which Intel processor first introduced superscalar execution?

7. Name all 32-bit general-purpose registers

8. Name all six CPU status flags in the Intel processor

9. Which flag is set when an arithmetic or logical instruction produces a negative result?

10. What is the range of addressable memory in protected mode?

Answer 1

1. Linear address for the Segment:Offset pair can be computed by inserting a zero at the end of the Segment value (same as multiplying by 16 ) and then adding the Offset value.

ie, 0950 is the segment value ,Inserting a zero at the end of this value.

Therefor, It becomes 09500 then add offset value

09500+100=09600

=09600(hex)

2. 0CD1:02E0

0CD1=segment value

02E0=offset value

= 0CD10+2E0(0 is inserted at the end of segment value then add with offset value)

=CFF0(hex)

3. Given, Frequency=3.4GHz

Therefor, Clock cycle = 1 / frequency

=1 / (3.4×10⁹) sec

= 0.294 ns.

4.  Time of one rotation = 1 / 4200 min

= 0.0002380952 min

=0.0002380952 *60 sec

=0.014285sec

=0.014285*1000 msec

=14.285msec

5.  386

6. x86

7.EAX,ECX,EBP,ESI,EBX,ESP,EDX

8. Sign flag

Overflow flag

Zero flag

Parity flag

Auxiliary carry flag

Carry flag

9. Sign flag

10. ​​​​​​​till 4GB