Organization of Intel 8085 Microprocessors                                                                                                  Print this page
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Instruction Set :

The complete instruction set of 8085 can be grouped in five different functional groups -
  1. Data Transfer group: Moves data between registers, or between memory location and registers, includes moves, loads, stores and exchanges.

  2. Arithmetic group: Adds, subtracts, increments , or decrements data in registers or memory .

  3. Logic group : AND’s , OR’s , XOR’s , compares , rotates , or complements data in registers or between memory and a register .

  4. Branch group : Initiates conditional or unconditional jumps , calls , returns , and restarts .

  5. Stack , I/O and machine control group : Includes instructions for maintaining the stack , reading from input ports , writing to output ports , setting and reading interrupt masks , and setting and clearing flags .
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