What are the types of instruction sets in 8085 microprocessor?
The 8085 instruction set is classified into 3 categories by considering the length of the 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.
What is an instruction set in microprocessor?
An instruction set is a group of commands for a CPU in machine language. The term can refer to all possible instructions for a CPU or a subset of instructions to enhance its performance in certain situations.
How many instructions are there in 8085 instruction set?
– The 8085 uses a total of 246 bit patterns to form its instruction set. – These 246 patterns represent only 74 instructions.
How the instructions of 8085 be classified explain the each group instructions with example?
These instructions can be classified into the following five functional categories: data transfer (copy) operations, arithmetic operations, logical operations, branching operations, and machine-control operations.
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 is an instruction in 8085?
An instruction is a binary pattern designed inside a microprocessor to perform a specific function. The entire group of instructions that a microprocessor supports is called Instruction Set. 8085 has 246 instructions. Each instruction is represented by an 8-bit binary value.
What are the types of instructions set in 8085 explain the arithmetic instructions of 8085?
8085 Arithmetic Instructions
| Opcode | Operand | Meaning |
|---|---|---|
| DAD | Reg. pair | Add the register pair to H and L registers |
| SUB | R M | Subtract the register or the memory from the accumulator |
| SBB | R M | Subtract the source and borrow from the accumulator |
| SUI | 8-bit data | Subtract the immediate from the accumulator |
How the 8085 instructions are classified Discuss 8085 instruction set classification with at least two examples of each?
Instruction Set Classification of 8085 Microprocessor
| Opcode | Operand | Meaning |
|---|---|---|
| ACI | 8-bit data | Add the immediate to the Accumulator with carry |
| LXI | Reg. pair, 16bit data | Load the register pair immediate |
| DAD | Reg. pair | Add the register pair to H and L registers |
| SUB | R M | Subtract the register or the memory from the Accumulator |
What is the instruction format of 8085?
The 8085 instruction set is classified into the following three groups according to word size: ü One-word or 1-byte instructions ü Two-word or 2-byte instructions ü Three-word or 3-byte instructions
What is the instructionformat in 8085?
The 8085 instruction set is classified into the following three groups according to word size: In the 8085, “byte” and “word” are synonymous because it is an 8-bit microprocessor. However, instructions are commonly referred to in terms of bytes rather than words.
What are the different addressing modes in 8085?
The addressing modes of 8085 microprocessor can be classified into five. They are immediate addressing, register addressing, direct addressing, indirect addressing, and implied addressing. All 8085 addressing modes are described below. Before that what is an addressing mode in a microprocessor.
What is the programming model of 8085?
Programming Model of 8085: The programming model of 8085 consist of an 8-bit accumulator, one flag register, 6 general 8-bit purpose registers , and two 16-bit special purpose registers . These registers are critically required when programming a 8085 processor. The different register in the programming model are explained below: