MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -A one-byte instruction includes a opcode and a operand in the same byte. Operand(s) are internal registers and are in the instruction in form of codes. If there is no numeral present in the instruction then that instruction will be of one-byte, for example, MOV C, A, RAL, and ADD B, etc.

Detailed explanation-2: -The PIC instruction set refers to the set of instructions that Microchip Technology PIC or dsPIC microcontroller supports. The instructions are usually programmed into the Flash memory of the processor, and automatically executed by the microcontroller on startup.

Detailed explanation-3: -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.

Detailed explanation-4: -Data Processing Operations: – Copy data between registers. – Manipulate data in a single register. – Arithmetic operations. – Logic operations. Program Sequence Control Operations: – Unconditional Jump. – Conditional Jump. – Call. – Control.