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List the various instruction set and architecture of 8085 microprocessor.




List the various instruction set and architecture of 8085 microprocessor.

Instruction Set :

Data Transfer Group : The data transfer group of instruction include following instructions :
  1. MOV Rd, Rs
  2. MOV R, M and MOV M, R
  3. MVI R, data
  4. MVI M, data
  5. LXI Rp, 16 bit data.
Arithmetic Operation Group : The arithmetic group of instruction include following instructions :
  1. ADD R
  2. ADD M
  3. ADC R
  4. ADC M
  5. ADI data
Logical Group : The logical group of instructions include following instructions :
  • ANA R
  • ANA M
  • ANI data
  • ORA R
  • ORA M
Branch Group :

1. Jump instructions
  • JMP address
  • Conditional jump instructions
  • PCHL
2. Call and return instructions
  • CALL address
  • conditional jump instructions
  • conditional Ret instructions
  • RET
3. Restart instructions
  • RST N
Stack and Machine Control Group : The stach machine control group of instruction include following instructions :
1. PUSH Rp  2. POP Rp   3. SPHL   4. XTHL 5.NOP

Architecture of 8085 microprocessor : We divide the architecture in different groups as follows :
1. Arithmetic and logical group.
2. Register group.
3. Interrupt control group.
4. Serial I/O control group.
5. Instruction register, decoder, timing and control group.
Functional block diagram of 8085A microprocessor

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