An instruction is a command to the microprocessor to perform a given task on specified data. Each instruction has two parts:
One is task to be performed,called the operation code (opcode).
Second is the data to be operated on, called the operand. It can be specified in various ways,it may include 8bit/16bit data, an internal register, a memory location , or 8bit/16bit address. In some instructions, the operand is implicit.
The 8085 instruction set is classified into three groups according to Word size.
They are-
1. One word / 1 byte instructions
2. Ttwo word / 2byte instructions
3. Three word / 3byte instructions
There is no exit instruction in the 8085. Do you mean return, as in from a function or interrupt? If so, the instruction is RET.
Not in the 8085.
There are 74 instructions in the 8085 microprocessor.
MUL is not an 8085 instruction.
The 8085 instruction set is classified into three groups according to its Word size. They are 1. One word /1 byte instructions 2. Two word / 2 byte instructions 3. Three word / 3 byte instructions
CALL, requiring 18 clock cycles.
There are 74 instructions in the 8085 microprocessor.
The NOP instruction is a no-operation instruction. It does nothing to the state of the machine, except to use some time. In the case of the 8085, it uses four clock cycles plus however many wait states are need to access the NOP instruction from memory.
There are no instructions in the 8085 that execute in only one clock pulse. The minimum number of clock cycles is four; three for instruction fetch and one for instruction decode/execute.
stores next instructions
The 8085 is an 8 bit processor, so its word length is 8 bits.
Push instruction pushes two byte of data on the top of the stack.