Mansoura University
Faculty of Computers and Information
Department of Information Technology
Second Semester- 2021–2022
[IT425P] Microprocessors Applications
Grade: Fourth Year (IT)
Dr. Wael Ali
REVIEW QUESTIONS
• Complete each of the following statements:
1. The part of memory space used to store the instructions of a
program is …..
2. The part of memory space used to store the data used by the
program is …..
3. The part of memory space used to store temporarily data is …..
4. The physical address for CS=2000H & IP=1000H is ..... 2
REVIEW QUESTIONS (CONT.)
5. The physical address for memory address 0100:1234H is .....
6. The physical address for SS = 1234H, SP = 0100H is .....
7. If CS=24F6H & IP=634AH, then the logical address will be
….., the physical address will be ….., the lower range of the
code segment will be ….. and the upper range of the code
segment will be …..
3
REVIEW QUESTIONS (CONT.)
8. Assume the memory locations of DS:6826 contains 48H and
that DS:6827 contains 22H then the content of BX after the
execution of the instruction MOV BX,[6826] is …..
9. If SS=0C00H & SP=FF00H, the number of words of data
that are currently held in the stack is ….. knowing that
SP=0000H at the start of the program. 4
REVIEW QUESTIONS (CONT.)
10. If AX=0000, BX=0010, CX=0020, DX=3034, CS=1200,
DS=1000, ES=1030, SS=1060, BP=0040, SP=0400,
DI=0060, SI=0050, IP=0100, then the start and end
address of each segment is ….., ….., ….., ….., and the
physical address of the next instruction is ….. 5
REVIEW QUESTIONS (CONT.)
11. If AX=3245H, BX=5632H, CX=672BH, CS=2000H,
SI=62F4H, find the result of each line of the following
program: ( the memory map is shown below).
– MOV DS,AX …..
– MOV SI,100H …..
– MOV BX,04H …..
6
REVIEW QUESTIONS (CONT.)
• Which of the following instructions are valid, correct
errors if any:
1. MOV BL, CX.
2. In the Flag register, if TF=0 then the MP operates in the
single step mode.
3. MOV [BX], [DI]. 7
REVIEW QUESTIONS (CONT.)
4. Since there are four segments in the processor so the
size of each one is calculated by dividing the total
memory by four.
5. The stack is a FIFO memory.
6. MOV CS, SS. 8
REVIEW QUESTIONS (CONT.)
• Choose only one answer:
1. Main memory system divided into ….. parts.
a. two. b. three. c. four. d. All the above.
2. The first 1M byte of memory often called the …..
memory system.
a. real. b. conventional. c. DOS. d. All the above. 9
REVIEW QUESTIONS (CONT.)
3. ….. controls operation of the computer from the
keyboard when operated in the DOS mode.
a. COMMAND.COM. b. MSDOS.SYS. c. IO.SYS.
d. All the above. e. None of the above.
10
Thank you for your attention!
Questions, ideas & suggestions.
