Data Transfer Instructions: Data Transfer Instructions defines the data transfer operation. What are instruction sets? 2. The instruction that is used to transfer the data from source operand to destination operand is a) data copy/transfer instruction b) branch instruction c) arithmetic/logical instruction d) string instruction View Answer Data Transfer Instructions. Internal Block Diagram of 80286 12.

80286. String Instructions. Coa 1.

Presentation Summary : Instruction Set. As shown in the Fig. ¾125k transistors, HMOS III technology. 8086 has more than 20,000 instructions.21-Nov-2010 ohmshankar.ece@act.edu.in 2

UNIT-1 INTRODUCTION TO 8086 ECE DEPARTMENT MICROPROCESSORS AND MICROCONTROLLERS Page 2 iv) ADDRESS BUS: The address bus consists of 16, 20, 24, or more parallel signal lines. Instruction Set of 8086 An instruction is a binary pattern designed inside a microprocessor to perform a specific function. The entire execution state of the 80286 (consisting of 24 registers) is defined upon completion of this instruction.

Next Page. The 8086 provides many arithmetic operations: addition, subtraction, negation,multiplication and comparing two values.ADD :The add instruction adds the contents of the source operand to the destinationoperand.Eg. Also for: 80287. The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. ¾Two mode of operations. ADC see ADD ADD opcode + $10, and xx010xxx (ModR/M byte) for $80-$83 ADD r/m8, reg8 $00 ADD r/m16, reg16 $01 ADD reg8, r/m8 $02 ADD reg16, r/m16 $03 ADD AL, imm8 $04 ADD AX, imm16 $05 … Instructions that are used to transfer data/ address in to registers, memory locations and I/O ports. Complete 8086 Instruction Set. The instruction requires 190 clocks with no wait states. 13. Microprocessor & Assembly Language. Instruction set of 8086 microprocessor. These flags are conditional/status flags. Program Execution Transfer Instructions (Branch & Loop Instructions) Processor Control Instructions. It has a powerful instruction set and it is capable to providing multiplication and division operations directly. Instructions That Are Used To Transfer Data/ PPT. 1. 6.8 shows the instruction formats for 1 to 6 bytes instructions. Microprocessors and Microcontrollers Prof. Krishna Kumar Indian Institute of Science Bangalore •Flag Register of 80386: The Flag register of 80386 is a 32 bit register.Out of the 32 bits, Intel has reserved bits D18 to D31, D5 and D3, while D1 is always set at 1.Two extra new flags are added to the 80286 flag to derive the flag register of 80386. ¾Improves both hardware and software. Operation Operands Opcode. Status and control register. Instruction pointer. The descriptor cache registers for the ES, DS, SS, CS, TR, and LDT are directly loaded from this area. Then, it sends the result in binary form to the output port. Dear Readers, Welcome to 8086 Microprocessor Objective Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of 8086 Microprocessor MCQs.These objective type 8086 Microprocessor Questions are very important for campus placement … 80286 Microprocessor. Best 8086 Microprocessor Objective Questions and Answers. On these lines the CPU sends out the address of the memory location that is to be written to or read from.