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8086 Instruction Set Overview

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Questions and Answers

Which type of instructions are included in the 8086 instruction set?

8085 instructions and additional string instructions

Only string instructions

8085 instructions and new operations such as multiplication and division (correct)

Only 8085 instructions

How many different instructions are there in the 8086 instruction set?

Approximately 117 (correct)

About 500

Less than 100

Exactly 300

Do the 8086 instructions allow memory to memory operations?

No, for any of the instructions

No, except for string instructions (correct)

Yes, for all instructions

Yes, but only for specific instructions

In what section of the text are the addressing modes of the 8086 discussed?

<p>Section 3.2</p> Signup and view all the answers

How can the data addressing modes of a processor be classified?

<p>By data addressing modes and program memory addressing modes</p> Signup and view all the answers

Study Notes

8086 Instruction Set

The 8086 instruction set includes arithmetic, logical, control flow, and data transfer instructions.

Instruction Set Characteristics

There are 71 different instructions in the 8086 instruction set.

Memory Operations

The 8086 instructions do not allow memory-to-memory operations, requiring data to be moved through registers.

Text Organization

The addressing modes of the 8086 are discussed in the section on addressing modes.

Data Addressing Modes

Data addressing modes can be classified into register, immediate, and memory addressing modes.

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Description

Test your knowledge of the 8086 instruction set which includes equivalents of the 8085 instructions and many new ones. Topics include signed/unsigned multiplication and division, bit manipulation instructions, string instructions, interrupt instructions, and more.