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

Errors and Error DetectionWhen bits are transmitted over the computer network, they are subject to get corrupted due to interference and network problems. The corrupted bits leads to spurious data being received by the receiver and are called errors.Error detection techniques are responsible for checking whether an error has occurred ... Read More

In this section, we will see the basic architecture of the Motorola M6800 Microprocessor, and different registers to write programs into it.To write programs we have to care about the registers and some instructions to access them during program execution. So from this diagram, we can see that there are two ... Read More

The Intel 8085 is an 8-bit microprocessor produced by Intel and introduced in 1976. It is a software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features. When the 8085desires to receive 8-bit information, it receives it on ... Read More