The document discusses the instruction set of the 8085 microprocessor. It is classified into 5 types: data transfer instructions, arithmetic instructions, logical instructions, branch instructions, and control instructions. The 8085 instruction set contains a total of 246 instructions that are represented by 8-bit binary codes to instruct the microprocessor to perform specific tasks and operations in a user friendly way without needing to remember the opcode for each.

1. GANDHINAGAR INSTITUTE OF TECHNOLOGY
Computer Engineering Department
MAI (2150707)
Instruction Set Of 8085
Prepared By:
Harsh Kothari
(170120107066)
Guided By:
Prof. Raxit Jani

2. Instruction Set of 8085
 Binary pattern design inside a microprocessor.
 group of instructions that 8085 supports is 8085
instruction set.
 Total 246 instructions
 Represented by 8-bit binary code

3. Classification of Instruction set
They are classified in to Five types:
 Data Transfer Instructions.
 Arithmetic Instructions.
 Logical Instructions.
 Branch Instructions.
 Control Instructions.

5. Data Transfer Instruction
MOV SHLD
MVI XCHG
LDA SPHL
LDAX XTHL
LXI PUSH
LHLD POP
STA OUT
STAX IN

7. Arithmetic Instructions
ADD SBI
ADC INR
ADI INX
ACI DCR
DAD DCX
SUB DAA
SUI

9. Logical Instructions
CMP RLC
CPI RRC
ANA RAL
ANI RAR
XRA CMA
XRI CMC
ORA STC
ORI

11. Branch Instructions
JMP PCHL
JX RST
RET
Jump Carry Return Flags
JC CC RC CY=1
JNC CNC RNC CY=0
JP CP RP S=0
JM CM RM S=1
JZ CZ RZ Z=1
JNZ CNZ RNZ Z=0
JPE CPE REP P=1
JPO CPO RPO P=0

13. Control Instructions
NOP DI
HLT EI

14.  Instruction instruct the microprocessor to
perform specific task/operation.
 Instructions are beneficial as we don’t
need to remember the Opcode for each
operations.
 Thus it is more user friendly.