Ch 02: 16-Bit Segmented Memory Model & Addressing Modes

Deep dive into 16-bit real mode memory segmentation (CS, DS, SS, ES), pointer/index registers (SP, BP, SI, DI), and calculating effective physical addresses across memory boundaries.

395 Questions395 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 111 – 120 of 395 Questions

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Q111

❓ MCQ📘 CS401📑 Lec 2🏷️ Stack Operations and POP MechanicsEasy🔁⭐💡📄🎓VU🏛️VU

When a value is popped from a downward-growing (decrementing) stack in 8088 assembly language, how is the Stack Pointer (SP) updated relative to retrieving the item?

💻 assembly Snippet

pop ax

A.Copied from the stack first, then SP is incremented
B.SP is incremented first, then copied from the stack
C.SP is decremented first, then copied from the stack
D.Copied from the stack first, then SP is decremented

Q112

❓ MCQ📘 CS401📑 Lec 2🏷️ Stack Operations and PUSH MechanicsEasy🔁⭐💡📄🎓VU🏛️VU

When a value is pushed onto a downward-growing (decrementing) stack in the 8088 CPU, how is the Stack Pointer (SP) updated relative to copying the item?

💻 assembly Snippet

push ax

A.First decremented, then copied onto the stack
B.First incremented, then copied onto the stack
C.Copied onto the stack, then incremented
D.Copied onto the stack, then decremented

Q113

📝 Short Q📘 CS401📑 Lec 2🏷️ MOV Instruction Syntax and OperandsEasy🔁⭐📄🎓VU🏛️VU

Write valid 8088 assembly language instructions to perform each of the following data transfer tasks: 1. Copy BL into CL 2. Copy DX into AX 3. Store 0x12 into AL 4. Store 0x1234 into AX 5. Store 0xFFFF into AX

💻 assembly Snippet

mov cl, bl
mov ax, dx
mov al, 0x12
mov ax, 0x1234
mov ax, 0xFFFF

Q114

❓ MCQ📘 CS401📑 Lec 2🏷️ NASM Data Definition DirectivesEasy🔁⭐📄🎓VU🏛️VU

Which NASM pseudo-instruction directive is used to reserve or define an 8-bit byte memory variable?

💻 assembly Snippet

var1: db 10

A.db
B.dw
C.dn
D.dd

Q115

❓ MCQ📘 CS401📑 Lec 2🏷️ Assembly Instruction Syntax and OperandsEasy⭐📄🎓VU🏛️VU

In the 8088 assembly instruction 'mov ax, 5', the numeric value '5' serves as the ________ operand.

💻 assembly Snippet

mov ax, 5

A.source
B.destination
C.memory
D.register

Q116

📝 Short Q📘 CS401📑 Lec 2🏷️ Direct Memory Addressing ModeEasy🔁⭐📄🎓VU🏛️VU

Write a valid 8088 assembly language instruction to copy the word contents of the memory location at offset 0x0025 in the current data segment into register AX.

💻 assembly Snippet

mov ax, [0x0025]

Q117

📝 Short Q📘 CS401📑 Lec 2🏷️ Data Declaration and Intrinsic TypesEasy🔁⭐💡📄🎓VU🏛️VU

Explain how data is declared in 8088 assembly language and contrast basic assembly memory allocation types (BYTE and WORD) with high-level language data types.

💻 assembly Snippet

num1: db 10
num2: dw 1000

Q118

📝 Short Q📘 CS401📑 Lec 2🏷️ Direct Addressing Mode and Symbol Table ResolutionMedium🔁⭐💡📄🎓VU🏛️VU

Explain the mechanism of Direct Addressing Mode in 8088 assembly language and describe how the assembler utilizes the symbol table to resolve memory offset addresses.

💻 assembly Snippet

mov ax, [num1]

Q119

🧠 Long Problem📘 CS401📑 Lec 2🏷️ Size Mismatch Errors and Type SynchronizationHard⭐💡📄🎓VU🏛️VU

Differentiate between syntax errors and size mismatch logic errors in assembly language, detailing the programmer's responsibility regarding operand size alignment.

💻 assembly Snippet

num1: db 5
mov ax, [num1]

Q120

📝 Short Q📘 CS401📑 Lec 2🏷️ Register Indirect Addressing ModeMedium🔁⭐💡📄🎓VU🏛️VU

Describe Register Indirect Addressing Mode in 8088 assembly language, specifying which base and index registers can hold memory offset addresses.

💻 assembly Snippet

mov bx, array
mov ax, [bx]

Ch 02: 16-Bit Segmented Memory Model & Addressing Modes

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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