Ch 17: Secondary Storage and Device Drivers

Comprehensive capstone module covering cylinder-head-sector addressing, low-level disk sector reading/writing via INT 13h, boot sector layout, and assembling character device drivers.

183 Questions183 MCQs0 Short Questions0 Long Questions

🎯 Exam Practice Papers

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.

Showing 11 – 20 of 183 Questions

Page 2 of 19

Q11

📝 Short Q📘 CS401📑 Lec 17🏷️ Role of Integer DIV Instruction in Number PrintingEasy🔁⭐💡📄🎓VU🏛️VU

What is the primary role of the DIV instruction in the number-to-ASCII printing algorithm, and how are the integer quotient and remainder utilized?

💻 assembly Snippet

mov dx, 0
mov ax, 253
mov bx, 10
div bx

Q12

❓ MCQ📘 CS401📑 Lec 17🏷️ LIFO Stack Purpose in Number PrintingEasy🔁⭐💡📄🎓VU🏛️VU

Why is the LIFO system stack used during number-to-ASCII conversion before printing digits to the screen?

A.To reverse the order of extracted digits so they print from left to right
B.To speed up integer division operations performed by the CPU
C.To store attribute bytes alongside the quotient automatically
D.To prevent division-by-zero hardware interrupts

Q13

📝 Short Q📘 CS401📑 Lec 17🏷️ DIV Instruction Register Configurations (8-bit vs 16-bit Divisors)Medium🔁⭐💡📄🎓VU🏛️VU

Explain the two operational forms of the unsigned DIV instruction in 8088 assembly language, specifying the implied dividend, quotient, and remainder registers for 8-bit and 16-bit divisors.

💻 assembly Snippet

div bl
div bx

Q14

📝 Short Q📘 CS401📑 Lec 17🏷️ Divide Overflow Error and Type 0 Interrupt MechanicsMedium🔁⭐💡📄🎓VU🏛️VU

What causes a Divide Overflow Error (Type 0 Interrupt) during the execution of a DIV instruction in 8088 assembly language, and how does the CPU respond?

💻 assembly Snippet

mov ax, 1000
mov bl, 2
div bl

Q15

❓ MCQ📘 CS401📑 Lec 17🏷️ DIV Instruction Operand Destination RegistersEasy🔁⭐💡📄🎓VU🏛️VU

When executing the instruction 'DIV BX' in 16-bit 8088 assembly language, where are the implied dividend, quotient, and remainder stored?

💻 assembly Snippet

div bx

A.Dividend in AX, Quotient in AL, Remainder in AH
B.Dividend in DX:AX, Quotient in AX, Remainder in DX
C.Dividend in DX:AX, Quotient in DX, Remainder in AX
D.Dividend in BX, Quotient in AX, Remainder in DX

Q16

📝 Short Q📘 CS401📑 Lec 17🏷️ 2D Screen Memory Offset Calculation and MUL InstructionMedium🔁⭐💡📄🎓VU🏛️VU

Explain how a two-dimensional screen coordinate (Row, Column) is mapped to a linear memory offset in standard 80x25 text mode video memory, and demonstrate how the 8088 MUL instruction is applied in this calculation.

💻 assembly Snippet

mov al, row
mov bl, 80
mul bl

Q17

📝 Short Q📘 CS401📑 Lec 17🏷️ Unsigned MUL Instruction MechanicsEasy🔁⭐💡📄🎓VU🏛️VU

Explain the mechanics of the unsigned MUL instruction in 8088 assembly language for both 8-bit and 16-bit operands, detailing implicit registers and double-length product storage.

💻 assembly Snippet

mul bl
mul bx

Q18

📝 Short Q📘 CS401📑 Lec 17🏷️ String Processing Instructions and Hardware REP PrefixMedium🔁⭐💡📄🎓VU🏛️VU

What are string (block processing) instructions in 8088 assembly language? State how many primitive string instructions exist and explain the function of the hardware REP prefix.

💻 assembly Snippet

rep stosw

Q19

📝 Short Q📘 CS401📑 Lec 17🏷️ Primitive String Instructions and MOVS Memory-to-Memory ExceptionMedium🔁⭐💡📄🎓VU🏛️VU

List the five primitive string instructions in 8088 assembly language. Explain why MOVS is an exception to the general x86 memory-to-memory movement rule and how string instructions with the REP prefix improve performance.

💻 assembly Snippet

rep movsb

Q20

📝 Short Q📘 CS401📑 Lec 17🏷️ String Instruction Pointer and Register Conventions (DS:SI, ES:DI)Medium🔁⭐💡📄🎓VU🏛️VU

Explain the pointer and register conventions used by 8088 string instructions, specifically detailing DS:SI, ES:DI, AL/AX, and segment override rules.

💻 assembly Snippet

lodsb
stosb

Ch 17: Secondary Storage and Device Drivers

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

CS401 - Computer Architecture and Assembly Language Programming Examination Practice

Mid Term Examination

Final Term Examination

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