In 8085 Instruction set, logical type there is one complement instruction with the mnemonic CMA. It actually stands for “CoMplement the Accumulator”. It performs1's complement operation on the current contents of Accumulator, and the result is stored back in the Accumulator replacing its previous contents. It is to be noted ... Read More

In 8085 Instruction set, there are a set of jump instructions, which can transfer program control to a certain memory location. So after these branching mnemonics, we shall have to mention 16-bit target address of the location. These jump instructions can be divided into two categories– Unconditional jump instructions andConditional jump ... Read More

In 8085 Instruction set, we are having one mnemonic JZ a16, which stands for “Jump Zero” and “a16” stands for any 16-bit address. This instruction is used to jump to the address a16 as provided in the instruction. But as it is a conditional jump so it will happen if ... Read More

In 8085 Instruction set, we are having one mnemonic JPE a16,  which stands for “Jump if Parity Even” and “a16” stands for any 16-bit address. This instruction is used to jump to the address a16 as provided in the instruction. But as it is a conditional jump so it will ... Read More

In 8085 Instruction set, depending upon one of the flag bit values (excluding AC flag bit), the conditional call instructions will branch to a subroutine. The branch takes place based on the value of Cy flag, Z flag, P flag, or S flag. There is no call instruction based on ... Read More

In 8085 Instruction set, CZ is a mnemonic, which stands for “Call if Zero”. This instruction is used to branch to the subroutine whose 16-bit address is provided in the instruction, only if the Z flag value is 1. If Z flag value is 0, program flow continues in the ... Read More

In 8085 Instruction set, depending upon one of the flag bit values (excluding AC flag bit), the conditional return instructions will branch the control to the next instruction of the call statement by popping out two return address Bytes (High-Byte and Low-Byte) from the top of the stack. The branch ... Read More

In 8085 Instruction set, RZis a mnemonic, which stands for “Return if Zero”. This instruction is used to return to the main program, only if the Z flag value is 1. If Z flag value is 0, program flow continues in the subroutine sequentially. It is a 1-Byte instruction.Mnemonics, OperandOpcode(in ... Read More

In 8085 Instruction set, RM is a mnemonic, which stands for “Return if Minus”. This instruction is used to return to the main program, only if S flag value is 1. If S flag value is 0, program flow continues in the subroutine sequentially. It is a 1-Byte instruction.Mnemonics, OperandOpcode(in ... Read More

In 8085 Instruction set, for 16-bit addition, there is one instruction available that is DAD rp instruction. It is a 1-Byte instruction. With this instruction, with the content of the HL register pair, the contents of the mentioned register pair will get added and the result thus produced will be ... Read More