With 8 bits for the opcode, 2X = 256 distinct opcodes are possible. In hexadecimal, the opcodes can be from 00H to FFH. Each opcode corresponds to an instruction. Thus theoretically, 256 instructions are possible in the instruction set of 8085.
|Title||:||The 8085 Microprocessor|
|Author||:||K. Udaya Kumar|
|Publisher||:||Pearson Education India - 2008|