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How many bytes are present in 8085 instructions?

How many bytes are present in 8085 instructions?

In 8085, the length is measured in terms of “byte” rather then “word” because 8085 microprocessor has 8-bit data bus. Three types of instruction are: 1-byte instruction, 2-byte instruction, and 3-byte instruction. In 1-byte instruction, the opcode and the operand of an instruction are represented in one byte.

What are the five types of instruction set in 8085 microprocessor?

Instruction Set of Intel 8085 Microprocessor

  • Data Transfer Group.
  • Arithmetic Group.
  • Logical Group.
  • Branch Control Group.
  • I/O and Machine Control Group.

What can be the maximum size of an instruction in 8085?

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8085 has address bus of 16 bit, so it can index 2^16B . So 8085 support maximum of 64KB. Intel 8085 microprocessor has 16 bit address space so its 16 address lines will be used to reference the memory. A total of 2^16 memory location can be referenced with the help of the 16 address lines.

How many bytes instruction HLT has?

HLT instruction in 8085

Mnemonics, Operand Opcode(in HEX) Bytes
HLT 76 1

What is 3 byte instruction in microprocessor?

Three-byte instruction is the type of instruction in which the first 8 bits indicates the opcode and the next two bytes specify the 16-bit address. The low-order address is represented in second byte and the high-order address is represented in the third byte.

What is the example of three byte instruction?

Three-byte instructions – The second byte is the low-order operand and the third byte is the high-order operand. If a 16-bit numeral is present in the instruction then that instruction will be of three-byte. Here, the numeral may be a data or an address. for example, in LXI H,3500H and STA 2500H, etc.

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What are the followings instructions contains of an 8086?

Arithmetic Instructions

Instruction Description
ADC Adds specified operands and the carry status (i.e. carry of the previous stage).
SUB Subtract immediate data from accumulator, memory or register.
SBB Subtract immediate data with borrow from accumulator, memory or register.
MUL Unsigned 8-bit or 16-bit multiplication.

What is HLT instruction in 8085 Processor Mcq?

end of program. HLT opcode in 8085 microprocessor means end of program. stack pointer.