Chapter 2-2

Question 1

allows the microprocessor to address only the first 1M byte of memory space

Answer 1

Real Mode Operation

Question 2

What do you call the the first 1M byte of memory?

Answer 2

Real Memory, Conventional Memory, or DOS Memory system

Question 3

The 80286 and above operate in either the ____ or ____ mode

Answer 3

real; protected

Question 4

located within one of the segment registers, defines the beginning address of any 64K-byte memory segment.

Answer 4

Segment Address

Question 5

selects any location within
the 64K byte memory segment.

Answer 5

Offset Address

Question 6

Length of segments in the real mode

Answer 6

64KB

Question 7

Other term for offset address

Answer 7

displacement

Question 8

In the real mode, what is internally appended on the rightmost end of each segment register?

Answer 8

0H

Question 9

What do you call a 16-byte boundary?

Answer 9

Paragraph

Question 10

Is found by adding 0H to the end of the segment register

Answer 10

starting address

Question 11

Is found by adding FFFFH to the beginning address

Answer 11

ending address

Question 12

What is This area of memory (0FFFF0H–
10FFEFH) referred to as?

Answer 12

High Memory

Question 13

is always added to the starting address of the segment to locate the data.

Answer 13

offset address

Question 14

How many bits should the offset address be?

Answer 14

16-bit

Question 15

indicates the first available area of memory above the drivers and other TPA program

Answer 15

free-pointer

Question 16

automatically handles the program loading

Answer 16

Program Loader

Question 17

is one that can be placed into any area of memory and executed without change.

Answer 17

Relocatable Program

Question 18

are data that can be placed in any area of memory and used without any change to the program.

Answer 18

Relocatable Data

Question 19

Sample: If 2000H is the segment register, what is the starting address and ending address?

Answer 19

20000H and 2FFFFH

Question 20

Sample: If 4000H is the segment register and the offset address is the sum of F000H and 3000H, what is the generated address?

Answer 20

42000H