Answer: These are the instruction which can access the code memory. Below is small example for same. Description: MOVC moves a byte from Code Memory into the Accumulator. The Code Memory address from which the byte will be moved is calculated by summing the value of the Accumulator with either D In 8051 there are different ways in which you can address or use these instructions. These are called addressing modes. Immediate addressing mode. In this addressing mode, the data is specified in the instruction itself. The # symbol specifies the value being data. E.g. MOV A, #35H (Value 35 is moved in Accumulator). MOV A,ACC is not a valid Instruction. Bytes: Number of bytes required to encode the instruction. Cycles: Number of instruction cycles required to execute the instruction. Note that there are 12 oscillator cycles to one instruction cycle on a standard 8051. Encoding: Lists the byte encoding for the instruction. Description: MOVC moves a byte from Code Memory into the Accumulator. The Code Memory address from which the byte will be moved is calculated by summing the value of the Accumulator with either DPTR or the Program Counter (PC). not a documented instruction. The 8051 supports 255 instructions and OpCode 0xA5 is the single OpCode that is not THE 8051 INSTRUCTION SET All commands in alphabetic order: ACALL addr11 DIV AB LJMP addr16 RETI ADD A,