OPCODES TABLE OF INTEL 8085 Opcodes of Intel 8085 in
OPCODES TABLE OF INTEL 8085. Opcodes of Intel 8085 in Alphabetical Order. Sr. No. Mnemonics Operand. Opcode. Bytes. 1. ACI Data. CE. 2. 2. ADC A. 8F. 1. 3. ADC
INSTRUCTION SET OF 8085
An instruction is a binary pattern designed inside a microprocessor Example: CMC. Page 54. Logical Instructions. Opcode. Operand. Description. STC. None.
Instruction Set
Three-word or 3-byte instructions. In the 8085 "byte" and "word" are synonymous because it is an 8-bit microprocessor. However
8085 Microprocessor Instruction Set
Instruction set of 8085A consists of one two and three byte instructions. ◇ 1.One Byte Instruction. FORMAT. For example: MOV B
8085 INSTRUCTION SET
set the instruction adds 6 to the high-order four bits. Example: DAA. Page 7. 8085 Instruction Set. Page 7. BRANCHING INSTRUCTIONS. Opcode Operand. Description.
8085 Instruction Set.pdf
This group of instructions transfers data to and from registers and memory. Condition flags are not affected by any instruction in this group. MOV r1 r2. (r1).
Unit-II Instruction Set and Programs for Intel 8085 • Following major
20 Oct 2020 • The opcode specifies the address of the register(s) in ... • The instruction set of a microprocessor is the collection of the instructions.
8085 Microprocessor Question Bank
The unconditional jump instruction enables the programmer to set up continuous loops. Opcode. Operand. Description. JMP. 16-bit. Jump. • This is a 3-byte
Multiple Choice Questions 1. Intel 8085 is a ______ bit
The microprocessor 8085 has _____ basic instructions and _____ opcodes. a Consider the following set of 8085 instruction. MVI A82H. ORA A. JP DSPLY. XRA A.
instruction-set-of-8085.pdf
registers (C E
OPCODES TABLE OF INTEL 8085 Opcodes of Intel 8085 in
Page 1 of 6. OPCODES TABLE OF INTEL 8085. Opcodes of Intel 8085 in Alphabetical Order. Sr. No. Mnemonics Operand. Opcode. Bytes. 1. ACI Data.
Appendix A: 8085 Instruction Set by Opcode
IN port. DB. OUT port. D3. Page 6. 228. Microelectronics and Microprocessor-based Systems. Stack and Machine Control Group. Thisgroup ofinstructionsmaintains
INSTRUCTION SET OF 8085
The entire group of instructions that a microprocessor supports is called Instruction Set. Data Transfer Instructions. Opcode. Operand. Description.
8085 Microprocessor Instruction Set
immediate data into B register. MP & MC APPLICATIONS. Lecture 4 – 8085 Microprocessor Instruction Set. Opcode. Opcode Operand
8085 INSTRUCTION SET
8085 INSTRUCTION SET. INSTRUCTION DETAILS. DATA TRANSFER INSTRUCTIONS. Opcode Operand. Description. Copy from source to destination.
AVR Instruction Set Manual
Atmel-0856L-AVR-Instruction-Set-Manual_Other-11/2016 The AVR® Enhanced RISC microcontroller supports powerful and efficient ... 16-bit Opcode:.
8085 Opcode Sheet
B. D. H. SP. C. NC. Z. NZ. MOV. B. C. D. E. H. L. M. A. LXI. 1. 11. 21. 31. JMP. C3. DA D2 CA C2. B. 40. 41. 42. 43. 44. 45. 46. 47. INX. 3. 13. 23.
ECS 50 8086 Instruction Set Opcodes Operation Operands Opcode
8086 Instruction Set Opcodes. Operation Operands. Opcode. ADC see ADD. ADD opcode + $10 and xx010xxx (ModR/M byte) for $80-$83.
Lecture Note On Microprocessor and Microcontroller Theory and
Complex Instruction Set Computer (CISC) processors. 2. 8085 MICROPROCESSOR ARCHITECTURE. The 8085 microprocessor is an 8-bit processor available as a 40-pin
instruction-set-of-8085.pdf
Instruction Set of 8085 The entire group of instructions that a microprocessor ... Data Transfer Instructions. Opcode. Operand. Description.
MICROPROCESSOR
& MICROCONTROLLERS053 EC 65
Unit 1 8085 MICROPROCESSOR
Lecture 1-4 : 8085 Microprocessor Instruction Set
By DICKSON NKONGO, MSc.
EECE Department
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Microprocessor & Microcontroller Applications
Lecture 1-4: Outline
8085 Instruction Set 2
8085 Instruction Format 1
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Classification of Instruction Set 3
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Lecture 1-4: 8085 Microprocessor Instruction Set
INSTRUCTION FORMATS
1 BYTE INSTRUCTION 2 BYTE INSTRUCTION 3 BYTE INSTRUCTION
MOV A,B --- 78H MVI B, 02 --- 06H 02 JMP 6200H ---C3H 00 62
MP & MC
Lecture 4 - 8085 Microprocessor Instruction Set
Instruction Formats
Instruction set of 8085A consists of one, two and three byte instructions.1 Byte Instruction
2Bytes Instruction
3 Bytes Instruction
The first byte is always the opcode; in two byte
instructions the second byte is usually data; in three byte instructions the last two byte present address or 16-bit dataMP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Instruction Formats
Instruction set of 8085A consists of one, two and three byte instructions.1.One Byte Instruction
FORMAT
For example: MOV B, C whose opcode is 41H which is one byte. This instruction copies the contents of C register in B register2. Two byte instruction:
FORMAT
For example: MVI B, 08H. The opcode for this instruction is06H and is always followed by a byte data (08H in this case).
This instruction is a two byte instruction which copies immediate data into B registerMP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Opcode
Opcode Operand
Instruction Formats
Instruction set of 8085A consists of one, two and three byte instructions.3. Three Byte Instruction
FORMAT:
For example: JMP 8200H. The opcode for this
instruction is C3H and is always followed by 16 bit address (8200H in this case). This instruction is a three byte which loads 16 bit address into program counterMP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Opcode Operand Operand
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Lecture 1-4: 8085 Microprocessor Instruction Set
INSTRUCTION SET
MOVEMENT
INSTRUCTIONS
MODIFICATION
INSTRUCTIONS
CONTROL
INSTRUCTIONS
GROUP-0
DATATRANSFER
GROUP 1
DATATRANSFER
GROUP 2
ARITHMETIC
& LOGICGROUP -3A
BRANCH
GROUP 3B I/O &
MACHINE
CONTROL
MVI,INR,DCR,LDA,
STA,RAR,CMC,
CMA,STC,DAA,
DAD,LDAX,SHLD,
INX,RIM ETC.,
MOVAND,ADD,
OR,XOR
etc.,JNZ,JNC,JC,
JZ etc.,
PROGRAM
CONTROL
HLT,ENABLE,
DISABLE,
INTRPROCESS
CONTROL
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
BYTE ORGANIZATION
GROUP - 0
0 0 R R R I0 I0 I0
0 1 R R R S S S
1 0 A1 S S S
1 1 Cb Cb Cb B0 B0 B0
GROUP - 1
GROUP - 2
GROUP - 3
A1 A1Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Code For Receiving And Sending Registers/Pairs
REGISTERS ADDRESS
CODE REGISTERS ADDRESS
CODEB 000 B C 00 C 001
D 010 D E 01 E 011
H 100 H L 10 L 101
M 110 SP 11 A 111
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - ECE Dept.Information Operations (I0 I0 I0)
ADDRESS OPERATION
I0 I0 I0
0 0 0 NOT USED
0 0 1 IMMEDIATE OPERATION REGISTER PAIR
0 1 0 LOAD / STORE
0 1 1 INCREMENT/ DECREMENT REGISTER PAIR
1 0 0 INCREMENT SINGLE REGISTER
1 0 1 DECREMENT SINGLE REGISTER
1 1 0 IMMEDIATE OPERATION ON SINGLE
REGISTER
1 1 1 REGISTER SHIFTING
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Arithmetic And Logical Operations (A1 A1 A1)
ADDRESS OPERATION A1 A1 A1
0 0 0 ADD
0 0 1 ADD WITH CARRY (ADC)
0 1 0 SUBTRACT (SUB)
0 1 1 SUBTRACT WITH BORROW (SBB)
1 0 0 LOGICAL AND
1 0 1 EXCLUSIVE OR (X-OR)
1 1 0 LOGICAL OR (OR)
1 1 1 COMPARE
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Conditions Of Branch ( Cb Cb Cb)
ADDRESS OPERATION Cb Cb Cb
0 0 0 IF NOT ZERO (JNZ)
0 0 1 IF ZERO (JZ)
0 1 0 IF NO CARRY(JNC)
0 1 1 IF CARRY (JC)
1 0 0 IF ODD PARITY (JPO)
1 0 1 IF EVEN PARITY (JPE)
1 1 0 WAS IT POSITIVE (JP)
1 1 1 WAS IT NEGATIVE (JM)
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Branch Operations (BO BO BO)
ADDRESS OPERATION BO BO BO
0 0 0 CONDITIONAL RETURN
0 0 1 SIMPLE RETURN
0 1 0 CONDITIONAL JUMP
0 1 1 UNCONDITIONAL JUMP
1 0 0 CONDITIONAL CALL
1 0 1 SIMPLE CALL
1 1 0 SPECIAL A/L OPERATIONS
1 1 1 SPECIAL UNCONDITIONAL JUMPS
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.MVI B, BYTE
0 0 R R R I0 I0 I0
MOV B,C
ADD B0 0 0 0 0 1 1 0
0 1 R R R S S S
1 0 1 0 0 0 0 0
1 0 A1 A1 A1 S S S
1 0 0 0 0 0 0 0
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.Lecture 1-4: 8085 Microprocessor Instruction Set
Classification Of Instruction Set
There are 5 categories:
(1) Data Transfer Instruction, (2) Arithmetic Instructions, (3) Logical Instructions, (4) Branching Instructions, (5) Control Instructions,MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept. (1) Data Transfer InstructionsMOV Rd, Rs
MOV M, Rs
MOV Rd, M
This instruction copies the contents of the
source register into the destination register.The contents of the source register are not
altered.Example: MOV B,A or MOV M,B or MOV C,M
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.A 20 B 20
A FB 30 C
D EH 20 L 50
A 20 B
BEFORE EXECUTION AFTER EXECUTION
MOV B, A
A FB 30 C
D EH 20 L 50
A F B C D EH 20 L 50
A FB C 40
D EH 20 L 50
MOV M, B
MOV C, M
40 4030
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.MEMORY MEMORY
(2) Data Transfer InstructionsMVI R, Data(8-bit)
MVI M, Data(8-bit)
The 8-bit immediate data is stored in the
destination register (R) or memory (M), R is general purpose 8 bit register such as A, B, C, D,E, H and L.
Example: MVI B, 60H or MVI M, 40H
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept. A F B C D E H L A FB 60 C
D E H LAFTER EXECUTION BEFORE EXECUTION
MVI B,60H
40 HL=2050H
2051H204FH 204FH
HL=2050H
2051HMVI M,40H
BEFORE EXECUTION AFTER EXECUTION
MP & MC APPLICATIONS
Lecture 4 - 8085 Microprocessor Instruction Set
Mr. Dickson
Nkongo
, MSc.: SJUCET - EECE Dept.MEMORY MEMORY
(3) Data Transfer InstructionsLDA 16-bit address
The contents of a memory location, specified by
a 16-bit address in the operand, are copied to the accumulator (A).The contents of the source are not altered.
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