8086 Addressing Modes - Microprocessors Questions and Answers - Sanfoundry

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Microprocessors Multiple Choice Questions | MCQs | Quiz

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Get Started • Machine Language Formats (http://www.sanfoundry.com/microprocessors-mcqs-machine-language-instruction-formats/) • 8086 Addressing Modes (http://www.sanfoundry.com/microprocessors-mcqs-addressing-modes-8086/) • 8086/8088 Instruction Set-1 (http://www.sanfoundry.com/microprocessors-mcqs-instruction-set-8086-8088-1/) • 8086/8088 Instruction Set-2 (http://www.sanfoundry.com/microprocessors-interview-questions-answers/) • 8086/8088 Instruction Set-3 (http://www.sanfoundry.com/microprocessors-questions-answers-freshers/) • Assembler Directives (http://www.sanfoundry.com/microprocessors-mcqs-assembler-directives-operators/) • Instructions Do's & Don'ts (http://www.sanfoundry.com/microprocessors-technical-interview-questions-answers/) • Assembler Programming (http://www.sanfoundry.com/microprocessors-mcqs-programming-with-assembler/) • Stack (http://www.sanfoundry.com/microprocessors-mcqs-stack/) • 8086/8088 Stack Structure (http://www.sanfoundry.com/microprocessors-mcqs-stack-structure-8086-8088/) • Interrupt Service Routines (http://www.sanfoundry.com/microprocessors-mcqs-interrupts-interrupt-service-routines/) • 8086/8088 Interrupt Cycle (http://www.sanfoundry.com/microprocessors-mcqs-interrupt-cycle-8086-8088/) • Non Maskable Interrupt (http://www.sanfoundry.com/microprocessors-mcqs-non-maskable-interrupt-maskable-interrupt-intr/) • Interrupt Programming (http://www.sanfoundry.com/microprocessors-interview-questions-answers-freshers/) • Macros (http://www.sanfoundry.com/microprocessors-mcqs-macros/) • Timings & Delays (http://www.sanfoundry.com/microprocessors-mcqs-timings-and-delays/) • Semiconductor Interfacing (http://www.sanfoundry.com/microprocessors-mcqs-semiconductor-memory-interfacing/) • Dynamic RAM Interfacing (http://www.sanfoundry.com/microprocessors-mcqs-dynamic-ram-interfacing/) • Interfacing I/O Ports (http://www.sanfoundry.com/microprocessors-mcqs-interfacing-io-ports/) • PIO 8255 (http://www.sanfoundry.com/microprocessors-mcqs-pio-8255-programmable-input-output-port/) • 8255 Operation Modes (http://www.sanfoundry.com/microprocessors-mcqs-modes-operation-8255/) • Analog - Digital Converters (http://www.sanfoundry.com/microprocessors-puzzles/) • Stepper Motor Interfacing (http://www.sanfoundry.com/microprocessors-questions-answers-experienced/) • 8254 Interval Timer (http://www.sanfoundry.com/microprocessors-mcqs-programmable-interval-timer-8254/) • 8259A Interrupt Controller (http://www.sanfoundry.com/microprocessors-mcqs-programmable-interrupt-controller-8259a/) • 8279 Keyboard Controller (http://www.sanfoundry.com/microprocessors-mcqs-keyboard-display-controller-8279/) • 8251 USART (http://www.sanfoundry.com/microprocessors-mcqs-programmable-communication-interface-8251-usart/) • 8257 DMA Controller (http://www.sanfoundry.com/microprocessors-mcqs-dma-controller-8257/) • DMA Transfer & Operations (http://www.sanfoundry.com/microprocessors-mcqs-dma-transfers-operations/) • 8237 DMA Interface - 1 (http://www.sanfoundry.com/microprocessors-mcqs-programmable-dma-interface-8237-1/) • 8237 DMA Interface - 2 (http://www.sanfoundry.com/microprocessors-question-papers/) • High Storage Capacity (http://www.sanfoundry.com/microprocessors-mcqs-high-storage-capacity-memory-devices/) • Interconnection Topologies (http://www.sanfoundry.com/microprocessors-mcqs-interconnection-topologies/) • Software Aspects (http://www.sanfoundry.com/microprocessors-mcqs-software-aspects-multimicroprocessor-systems/) • Numeric Processor 8087 - 1 (http://www.sanfoundry.com/microprocessors-mcqs-numeric-processor-8087-1/) • Numeric Processor 8087 - 2 (http://www.sanfoundry.com/tough-microprocessors-interview-questions-answers/) • 8089 I/O Processor (http://www.sanfoundry.com/microprocessors-mcqs-io-processor-8089/) • Bus Arbitration & Control (http://www.sanfoundry.com/microprocessors-mcqs-bus-arbitration-control/) • Tightly Coupled Systems (http://www.sanfoundry.com/microprocessors-mcqs-tightly-coupled-loosely-coupled-systems/) • Multi Microprocessor (http://www.sanfoundry.com/microprocessors-mcqs-design-pc-based-multimicroprocessor-system/) • 80286 Salient Features (http://www.sanfoundry.com/microprocessors-mcqs-salient-features-80286/) • 80286 Internal Architecture (http://www.sanfoundry.com/microprocessors-mcqs-internal-architecture-80286/) • 80286 Signal Descriptions (http://www.sanfoundry.com/microprocessors-mcqs-signal-descriptions-80286/) • Real Addressing Mode (http://www.sanfoundry.com/microprocessors-mcqs-real-addressing-mode/) • PVAM - 1 (http://www.sanfoundry.com/microprocessors-mcqs-protected-virtual-address-mode-pvam-1/) • PVAM - 2 (http://www.sanfoundry.com/advanced-microprocessors-questions-answers/) • Privilege (http://www.sanfoundry.com/microprocessors-mcqs-privilege/)

• Protection (http://www.sanfoundry.com/microprocessors-mcqs-protection/) • Special Operations (http://www.sanfoundry.com/microprocessors-mcqs-special-operations/) • 80286 System Configuration (http://www.sanfoundry.com/microprocessors-interview-questions-answers-experienced/) • Bus Hold & HLDA (http://www.sanfoundry.com/microprocessors-questions-answers-test/) • Instruction Set Features - 1 (http://www.sanfoundry.com/microprocessors-mcqs-instruction-set-features-1/) • Instruction Set Features - 2 (http://www.sanfoundry.com/microprocessors-questions-answers-quiz/) • 80287 Math Coprocessor-1 (http://www.sanfoundry.com/microprocessors-mcqs-80287-math-coprocessor-1/) • 80287 Math Coprocessor-2 (http://www.sanfoundry.com/microprocessors-questions-answers-mcqs/) • 80386DX Salient Features (http://www.sanfoundry.com/microprocessors-mcqs-salient-features-80386dx/) • ↓ 80386 ↓ • Architecture & Signals (http://www.sanfoundry.com/microprocessors-mcqs-architecture-signal-descriptions-80386/) • Register Organisation - 1 (http://www.sanfoundry.com/microprocessors-mcqs-register-organisation-80386-1/) • Register Organisation - 2 (http://www.sanfoundry.com/microprocessors-multiple-choice-questions-answers/) • 80386 Data Types (http://www.sanfoundry.com/microprocessors-mcqs-addressing-modes-80386-data-types-80386/) • 80386 Real Address Mode (http://www.sanfoundry.com/microprocessors-mcqs-real-address-mode-80386-protected-mode-80386/) • Segmentation (http://www.sanfoundry.com/microprocessors-mcqs-segmentation/) • Paging (http://www.sanfoundry.com/microprocessors-mcqs-paging/) • 80387 Coprocessor (http://www.sanfoundry.com/microprocessors-mcqs-virtual-8086-mode-coprocessor-80387/) • 80386 Instruction Set (http://www.sanfoundry.com/microprocessors-mcqs-enhanced-instruction-set-80386/) • 80486DX Coprocessor (http://www.sanfoundry.com/microprocessors-mcqs-numeric-coprocessor-80486dx/) • 80586 (Pentium) Features (http://www.sanfoundry.com/microprocessors-questions-answers-online-test/) • System Architecture (http://www.sanfoundry.com/microprocessors-mcqs-system-architecture/) • Intel MMX Architecture (http://www.sanfoundry.com/tricky-microprocessors-questions-answers/) • MMX Data Types (http://www.sanfoundry.com/microprocessors-questions-answers-online-quiz/) • MMX Instruction Set (http://www.sanfoundry.com/microprocessors-mcqs-mmx-instruction-set/) • Pentium-Pro & Pentium2 - 1 (http://www.sanfoundry.com/microprocessors-mcqs-pentium-pro-pentium-2-1/) • Pentium-Pro & Pentium2 - 2 (http://www.sanfoundry.com/microprocessors-questions-bank/) • Pentium 4 Features - 1 (http://www.sanfoundry.com/microprocessors-mcqs-features-pentium-4-netburst-microarchitecture-pentium-4-1/) • Pentium 4 Features - 2 (http://www.sanfoundry.com/microprocessors-questions-answers-entrance-exams/) • Hyperthreading Technology (http://www.sanfoundry.com/tough-microprocessors-questions-answers/) • Pentium Hyperthreading (http://www.sanfoundry.com/microprocessors-mcqs-hyperthreading-pentium/) • Formal Verification (http://www.sanfoundry.com/microprocessors-basic-questions-answers/) • Hybrid Architecture - 1 (http://www.sanfoundry.com/microprocessors-mcqs-hybrid-architecture-risc-cisc-convergence-advantages-risc-design-issues-risc-processors-1/) • Hybrid Architecture - 2 (http://www.sanfoundry.com/microprocessors-problems/) • 8051 Architecture (http://www.sanfoundry.com/microprocessors-mcqs-architecture-8051/) • 8051 Register Set (http://www.sanfoundry.com/microprocessors-mcqs-register-set-8051/) • 8051 Interrupt & Stack - 1 (http://www.sanfoundry.com/microprocessors-mcqs-interrupt-stack-8051-1/) • 8051 Interrupt & Stack - 2 (http://www.sanfoundry.com/microprocessors-assessment-questions-answers/) • 8051 Addressing Modes (http://www.sanfoundry.com/microprocessors-mcqs-addressing-modes-8051/) • 8051 Instruction Set - 1 (http://www.sanfoundry.com/microprocessors-mcqs-8051-instruction-set-1/) • 8051 Instruction Set - 2 (http://www.sanfoundry.com/microprocessors-questions-answers-aptitude-test/) • 8051 Ports Interfacing - 1 (http://www.sanfoundry.com/microprocessors-mcqs-interfacing-8051-ports-1/) • 8051 Ports Interfacing - 2 (http://www.sanfoundry.com/microprocessors-questions-answers-campus-interviews/) • 8051 Interrupt Structure (http://www.sanfoundry.com/microprocessors-mcqs-interrupt-structure-8051/) • Serial Communication Unit (http://www.sanfoundry.com/microprocessors-mcqs-serial-communication-unit/) • Power Control Register (http://www.sanfoundry.com/microprocessors-mcqs-power-control-register/)

Best Reference Books Microprocessor Books (http://www.sanfoundry.com/best-reference-books-microprocessors-microcontrollers/)

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Microprocessors Questions and Answers – Addressing Modes of 8086 This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Addressing Modes of 8086”. 1. The instruction, MOV AX, 0005H belongs to the address mode a) register b) direct c) immediate d) register relative View Answer Answer: c Explanation: In Immediate addressing mode, immediate data is a part of instruction and appears in the form of successive byte or bytes.

2. The instruction, MOV AX, 1234H is an example of a) register addressing mode b) direct addressing mode c) immediate addressing mode d) based indexed addressing mode View Answer

Answer: c Explanation: Since immediate data is present in the instruction.

3. The instruction, MOV AX, [2500H] is an example of a) immediate addressing mode b) direct addressing mode c) indirect addressing mode d) register addressing mode View Answer Answer: b Explanation: Since the address is directly specified in the instruction as a part of it.

4. If the data is present in a register and it is referred using the particular register, then it is a) direct addressing mode b) register addressing mode c) indexed addressing mode d) immediate addressing mode View Answer Answer: b Explanation: Since register is used to refer the address.

5. The instruction, MOV AX,[BX] is an example of a) direct addressing mode b) register addressing mode c) register relative addressing mode d) register indirect addressing mode View Answer Answer: d Explanation: Since the register used to refer the address is accessed indirectly.

6. If the offset of the operand is stored in one of the index registers, then it is a) based indexed addressing mode b) relative based indexed addressing mode c) indexed addressing mode d) none of the mentioned View Answer Answer: c Explanation: In indexed addressing mode, the offset of operand is stored and in the rest of them, address is stored.

7. The addressing mode that is used in unconditional branch instructions is a) intrasegment direct addressing mode b) intrasegment indirect addressing mode c) intrasegment direct and indirect addressing mode d) intersegment direct addressing mode View Answer Answer: b Explanation: In intrasegment indirect mode, the branch address is found as the content of a register or a memory location.

8. If the location to which the control is to be transferred lies in a different segment other than the current one, then the mode is called a) intrasegment mode b) intersegment direct mode c) intersegment indirect mode d) intersegment direct and indirect mode View Answer Answer: d Explanation: In intersegment mode, the control to be transferred lies in a different segment.

9. The instruction, JMP 5000H:2000H; is an example of a) intrasegment direct mode b) intrasegment indirect mode

c) intersegment direct mode d) intersegment indirect mode View Answer Answer: c Explanation: Since in intersegment direct mode, the address to which the control is to be transferred is in a different segment.

10. The contents of a base register are added to the contents of index register in a) indexed addressing mode b) based indexed addressing mode c) relative based indexed addressing mode d) based indexed and relative based indexed addressing mode View Answer Answer: d Explanation: The effective address is formed by adding the contents of both base and index registers to a default segment.

Sanfoundry Global Education & Learning Series – Microprocessors. Here’s the list of Best Reference Books in Microprocessors. (http://www.sanfoundry.com/best-reference-books-microprocessors/) To practice all areas of Microprocessors, here is complete set of 1000+ Multiple Choice Questions and Answers (http://www.sanfoundry.com/microprocessors-questionsanswers/). « Prev Page - Microprocessors Questions and Answers – Machine Language Instruction Formats (http://www.sanfoundry.com/microprocessors-mcqs-machine-languageinstruction-formats/) » Next Page - Microprocessors Questions and Answers – Instruction Set of 8086/8088 – 1 (http://www.sanfoundry.com/microprocessors-mcqs-instruction-set-8086-8088-1/)

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