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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.





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.

Gursharan Singh Tatla

professorgstatla@gmail.com www.eazynotes.com1

Gursharan Singh Tatla

professorgstatla@gmail.com

Instruction Set of 8085

yAn instruction is a binary pattern designed inside a microprocessor to perform a specific function. yThe entire group of instructions that a microprocessor supports is called Instruction Set. y8085 has 246instructions. yEach instruction is represented by an 8-bit binary value. yThese 8-bits of binary value is called Op-Codeor

Instruction Byte.

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Gursharan Singh Tatla

professorgstatla@gmail.com

Classification of Instruction Set

yData Transfer Instruction yArithmetic Instructions yLogical Instructions yBranching Instructions yControl Instructions

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professorgstatla@gmail.com

Data Transfer Instructions

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Gursharan Singh Tatla

professorgstatla@gmail.com yThese instructions move data between registers, or between memory and registers. yThese instructions copy data from source to destination. yWhile copying, the contents of source are not modified.

Data Transfer Instructions

OpcodeOperandDescription

MOVRd, Rs

M, Rs Rd, M

Copy from source to destination.

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Gursharan Singh Tatla

professorgstatla@gmail.com yThis instruction copies the contents of the source register into the destination register. yThe contents of the source register are not altered. yIf one of the operands is a memory location, its location is specified by the contents of the HL registers. yExample:MOV B, C or MOV B, M

Data Transfer Instructions

OpcodeOperandDescription

MVIRd,Data

M, Data

Move immediate 8-bit

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe 8-bit data is stored in the destination register or memory. yIf the operand is a memory location, its location is specified by the contents of the H-L registers. yExample:MVI B, 57H or MVI M, 57H

Data Transfer Instructions

OpcodeOperandDescription

LDA16-bit addressLoadAccumulator

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of a memory location, specified by a 16- bit address in the operand, are copied to the accumulator. yThe contents of the source are not altered. yExample:LDA 2034H

Data Transfer Instructions

OpcodeOperandDescription

LDAXB/D Register

Pair

Load accumulator indirect

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of the designated register pair point to a memory location. yThis instruction copies the contents of that memory location into the accumulator. yThe contents of either the register pair or the memory location are not altered. yExample:LDAX B

Data Transfer Instructions

OpcodeOperandDescription

LXIReg.pair, 16-bit

data

Load register pair immediate

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Gursharan Singh Tatla

professorgstatla@gmail.com yThis instruction loads 16-bit data in the register pair. yExample:LXI H, 2034 H

Data Transfer Instructions

OpcodeOperandDescription

LHLD16-bit addressLoad H-L registers direct

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Gursharan Singh Tatla

professorgstatla@gmail.com yThis instruction copies the contents of memory location pointed out by 16-bit address into register L. yIt copies the contents of next memory location into register H. yExample:LHLD 2040 H

Data Transfer Instructions

OpcodeOperandDescription

STA16-bit addressStore accumulator direct

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of accumulator are copied into the memory location specified by the operand. yExample:STA 2500 H

Data Transfer Instructions

OpcodeOperandDescription

STAXReg. pairStore accumulator indirect

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professorgstatla@gmail.com yThe contents of accumulator are copied into the memory location specified by the contents of the register pair. yExample:STAX B

Data Transfer Instructions

OpcodeOperandDescription

SHLD16-bit addressStore H-L registers direct

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of register L are stored into memory location specified by the 16-bit address. yThe contents of register H are stored into the next memory location. yExample:SHLD 2550 H

Data Transfer Instructions

OpcodeOperandDescription

XCHGNoneExchange H-L with D-E

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of register H are exchanged with the contents of register D. yThe contents of register L are exchanged with the contents of register E. yExample:XCHG

Data Transfer Instructions

OpcodeOperandDescription

SPHLNoneCopy H-L pair to the Stack Pointer (SP)

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Gursharan Singh Tatla

professorgstatla@gmail.com yThis instruction loads the contents of H-L pair into SP. yExample:SPHL

Data Transfer Instructions

OpcodeOperandDescription

XTHLNoneExchange HȂL with top of stack

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of L register are exchanged with the location pointed out by the contents of the SP. yThe contents of H register are exchanged with the next location (SP + 1). yExample:XTHL

Data Transfer Instructions

OpcodeOperandDescription

PCHLNoneLoad program counter with H-L contents

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of registers H and L are copied into the program counter (PC). yThe contents of H are placed as the high-order byte and the contents of L as the low-order byte. yExample:PCHL

Data Transfer Instructions

OpcodeOperandDescription

PUSHReg. pairPush register pair onto stack

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of register pair are copied onto stack. ySP is decremented and the contents of high-order registers (B, D, H, A) are copied into stack. ySP is again decremented and the contents of low-order registers (C, E, L, Flags) are copied into stack. yExample:PUSH B

Data Transfer Instructions

OpcodeOperandDescription

POPReg. pairPop stack to register pair

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of top of stack are copied into register pair. yThe contents of location pointed out by SP are copied to the low-order register (C, E, L, Flags). ySP is incremented and the contents of location are copied to the high-order register (B, D, H, A). yExample:POP H

Data Transfer Instructions

OpcodeOperandDescription

OUT8-bit port

address

Copy data from accumulator to a port with 8-

bit address

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of accumulator are copied into the I/O port. yExample:OUT 78 H

Data Transfer Instructions

OpcodeOperandDescription

IN8-bit port

address

Copy data to accumulator from a port with 8-

bit address

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of I/O port are copied into accumulator. yExample:IN 8C H

Arithmetic Instructions

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Gursharan Singh Tatla

professorgstatla@gmail.com yThese instructions perform the operations like: yAddition ySubtract yIncrement yDecrement

Addition

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Gursharan Singh Tatla

professorgstatla@gmail.com yAny 8-bit number, or the contents of register, or the contents of memory location can be added to the contents of accumulator. yThe result (sum) is stored in the accumulator. yNo two other 8-bit registers can be added directly. yExample:The contents of register B cannot be added directly to the contents of register C.

Subtraction

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Gursharan Singh Tatla

professorgstatla@gmail.com yAny 8-bit number, or the contents of register, or the contents of memory location can be subtracted from the contents of accumulator. yThe result is stored in the accumulator. form. yNo two other 8-bit registers can be subtracted directly.

Increment / Decrement

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe 8-bit contents of a register or a memory location can be incremented or decremented by 1. yThe 16-bit contents of a register pair can be incremented or decremented by 1. yIncrement or decrement can be performed on any register or a memory location.

Arithmetic Instructions

OpcodeOperandDescription

ADDR M

Add register or memory to accumulator

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of register or memory are added to the contents of accumulator. yThe result is stored in accumulator. yIf the operand is memory location, its address is specified by H-L pair. yAll flags are modified to reflect the result of the addition. yExample:ADD B or ADD M

Arithmetic Instructions

OpcodeOperandDescription

ADCR M

Add register or memory to accumulator with

carry

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe contents of register or memory and Carry Flag (CY) are added to the contents of accumulator. yThe result is stored in accumulator. yIf the operand is memory location, its address is specified by H-L pair. yAll flags are modified to reflect the result of the addition. yExample:ADC B or ADC M

Arithmetic Instructions

OpcodeOperandDescription

ADI8-bit dataAdd immediate to accumulator

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe 8-bit data is added to the contents of accumulator. yThe result is stored in accumulator. yAll flags are modified to reflect the result of the addition. yExample:ADI 45 H

Arithmetic Instructions

OpcodeOperandDescription

ACI8-bit dataAdd immediate to accumulator with carry

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe 8-bit data and the Carry Flag (CY) are added to the contents of accumulator. yThe result is stored in accumulator. yAll flags are modified to reflect the result of the addition. yExample:ACI 45 H

Arithmetic Instructions

OpcodeOperandDescription

DADReg. pairAdd register pair to H-L pair

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Gursharan Singh Tatla

professorgstatla@gmail.com yThe 16-bit contents of the register pair are added to the contents of H-L pair. yThe result is stored in H-L pair.quotesdbs_dbs14.pdfusesText_20
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