Instruction set of 8085 geeksforgeeks

8085 is pronounced as "eighty-eighty-five" microprocessor. It is an 8-bit microprocessor designed by Intel in 1977 using NMOS technology. It has the following configuration − 8-bit data bus 16-bit address bus, which can address upto 64KB A 16-bit program counter A 16-bit stack pointer Six 8-bit registers arranged in pairs: BC, DE, HL Instruction. Description. MOV. Moves data from register to register, register to memory, memory to register, memory to accumulator, accumulator to memory, etc. LDS. Loads a word from the specified memory locations into specified register. It also loads a word from the next two memory locations into DS register. LES. Arithmetic Instructions are the instructions which perform basic arithmetic operations such as addition, subtraction and a few more. In 8085 microprocessor, the destination operand is generally the accumulator. In 8085 microprocessor, the destination operand is generally the accumulator. Logical instructions in 8085 microprocessor. Logical instructions are the instructions which perform basic logical operations such as AND, OR, etc. In 8085 microprocessor, the destination operand is always the accumulator. Here logical operation works on a bitwise level. Following is the table showing the list of logical instructions: Instruction Set • Prof. Rajesh R.K. • Assistant Professor, • Department of MCA • Mohandas College of Engineering & Technology, Thiruvananthapuram, Kerala. 2. Instruction • An instruction is a binary pattern designed inside a microprocessor to perform a specific function. • 8085 has 246 instructions. • Each instruction is Problem - Write an assembly language program in 8085 microprocessor to sort a given list of n numbers using Bubble Sort. Example - Assumption - Size of list is stored at 2040H and list of numbers from 2041H onwards. Algorithm - Load size of list in C register and set D register to be 0 Decrement C as for n elements n-1 comparisons occur Definition: 8085 is an 8-bit microprocessor as it operates on 8 bits at a time and is created with N-MOS technology.This microprocessor exhibits some unique characteristics and this is the reason it still holds popularity among the microprocessors.. Basically, 8085 was the first commercially successful microprocessor by Intel.As some of the architectural drawbacks associated with 8080 was also 8085 program to multiply two 8 bit numbers using logical instructions; 8085 program to find sum of digits of 8 bit number; Instruction Set used in simplified instructional Computer (SIC) 25, Oct 18. Instruction Set used in SIC/XE. Please use ide.geeksforgeeks.org, Electronics Hub - Tech Reviews | Guides & How-to | Latest Trends In 8085 Instruction set, there is one mnemonic XCHG, which stands for eXCHanGe. This is an instruction to exchange contents of HL register pair with DE register pair. This instruction uses implied addressing mode. As it is1-Byte instruction, so It occupies only 1-Byte in the memory. After execution of this instruction, the content between H and Algorithm - Push the value of PSW in-memory stack with the help of PUSH instruction Pop the value of the Flag register and store it in register H with help of POP instruction Move the value of register L in register C [ H -> ACCUMULATOR VALUE, L-> FLAG REGISTER VALUE] Move the value of register B in register L Instruction word size The 8085 instruction set is classified into the following three groups accordi