Appendix A: 8085 Instruction Set by Opcode 225 No te: Two possible cycle times, for example, 6/12, indicates that the number of instruction cycles involved is
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Appendix A: 8085 Instruction Set by Opcode
Appendix A: 8085 Instruction Set by Opcode 225 No te: Two possible cycle times, for example, 6/12, indicates that the number of instruction cycles involved is
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AppendixA:
2238085Instruction
Set byOpcode Theinformationin thisappendixisreproducedby kindpermissionofthe Intel Corporation.Thesymbolsandabbreviationsused are listed below.Symbol
A B,C,D E,H,L F M byte dbIe addr port r,rl,r2 rp PC CY P AC Z SMeaning
Accumulator
} One of theinternalregistersRepresentsthe flag register
The 16-bitmemoryaddresscurrentlyheld by the register pair HandLAn 8-bit dataquantity
A 16-bit
(twobyte)dataquantityA 16-bit address
An 8-bit I/Oportaddress
One ofthe registers A, B, C,D, E,H,LOneofthe following register pairs
Brepresentsthe register pair
BandCDrepresentsthe register pairDandE
Hrepresentsthe register pairHandL
PSWrepresentsthe register pair A andF
SPrepresentsthe 16-bit stackpointer
The 16-bitprogramcounter
Carry flag
Parityflag
Auxiliarycarry flag
Zero flag
Sign flag
224MicroelectronicsandMicroprocessor-basedSystems
DataTransferGroup
Theseinstructionstransferdata betweenregisters andmemory.Flags-noneaffectedbyinstructionsin thisgroup.
MoveA,A 7F
B,A47 C,A4FA,B 78B,B40C,B48
A,C79B,C41C,C49
MaV A,D7A MaV B,D42 MaV C,D4A A,E7BB,E43C,E 4B
A,H7CB,H44C,H4C
A,L 7D
B,L45C,L 4D
A,M 7E
B,M46C,M 4E
D,A57E,ASFH,A67
D,B 50
E,B58H,B60
D,C51E,C59H,C61
MaV D,D52 MaV E,DSA MaV H,D62 D,E53E,E5BH,E63
D,H54E,H5CH,H64
D,L55E,L5DH,L65
D,M56E,M5EH,M66
MoveImmediate
L,A 6F
M,A77A,byte3E
L,B 68
M,B70B,byte06
L,C69M,C71C,byteOE
MaV L,D6A MaV M,D72MYID,byte16
L,E6BM,E73E,byte
IEL,H6CM,H74H,byte26
L,L6DM,L75L,byte2E
L,M 6E
M,byte36
LoadImmediate(Reg.pair)Load/StoreAdirect
{ B,db!, 01LDAXBOA
LXID,dble
11LDAXDlA
H,dble21STAXB02
SP,dble
31STAXD12
Load/StoreAdirectLoad/StoreHLdirect
LDA addr
3ALHLDaddr2A
STAaddr32
SHLDaddr22
AppendixA: 8085InstructionSetbyOpcode225
Exchange HL with DE
XCHG EBDataManipulationGroup -Arithmetic
Instructionsin this groupperformarithmeticoperationson data inthe registers and thememory. Add* A 87A8FB
80B 88
C 81C89ADD
D 82ADCD 8A
E 83E8BH
84H 8C
L85L8D
M86M8E
Subtract*
A 97A9FB
90B 98
C91C 99
SUB D 92SBBD9A
E 93 E9B H94H 9C
L95L9D
M96M9E
Add/SubtractImmediate*Double LengthAdd***
ADI byteC6
DAD 09ACIbyteCE19
SUI byte
D629SBI byte
DESP 39
Increment/Decrement**
A 3CA3D B04B 05
C OCCOD INRD14DCRD 15
E lC E 10H 24H 25
L2CL2D
M34M35
226MicroelectronicsandMicroprocessor-basedSystems
Increment/DecrementRegister Pair****
U 03 Hp OBINX13DCXIB
232B 33
3B
Complement
AU**Decimal Adjust A*
DAA 27CMA2F
Complement/SetCY***
CMC 3F
STC37ArithmeticImmediate*
AD! byte C6
ACI byteCE
SUI byteD6
SBIbyteDE
Notes *All flags may beaffected. ** All flags exceptCARRY may be affected. ***Only CARRY FLAG affected. ****No flags affected.DataManipulationGroup - Logical
Instructionsin this group perform logicaloperationson data in the registers and the memory.AND*OR*Exclusive-OR*
A A7A B7AAF
BAOBBOBA8
CAlCBlC A9
ANADA2ORAD B2XRADAA
EA3E B3E AB
HA4HB4HAC
L ASLB5LAD
MA6MB6MAE
AppendixA: 8085 InstructionSetbyOpcode227
CMPCompare*
A B C D E H L MBF B8 B9 BA BB BC BDBERotate***
RLC 07
RRC OF
RAL 17
RAR IFLogicalImmediate*
ANIbyteE6
XRIbyteEE
ORI byteF6CPIbyteFE
Notes *All flags may beaffected. ***Only the CARRY flag may beaffected.Transfer
ofControlGrouporBranchGroupThis group
ofinstructionsalters the sequenceofprogram flow by testing the conditionflags.JumpCallReturn
IMPaddrC3CALLaddrCD RETC9
INZaddrC2CNZ addrC4 RNZCO
IZaddr CACZ addrCCRZ C8
INCaddr D2CNC addr D4 RNCDO
ICaddrDA CC addrDC RC D8
IPO addr E2
CPOaddrE4 RPO
EOJPE addr EA CPE addr ECRPE E8
IPaddrF2 CPaddrF4 RP FO
1MaddrFA CMaddrFC RM F8
JumpIndirect
PCHL E9
Input/OutputGroup
Thisgroup
ofinstructionsperformsI/Oinstructionsbetweentheaccumulatorand a specifiedport.INportDB
OUT portD3228Microelectronics andMicroprocessor-basedSystems
Stack and MachineControlGroup
Thisgroup
ofinstructionsmaintains the stack andinternalcontrol flags.Stackoperations
{L C5 {L CI PUSH D5POP D1 E5EI F5 FIXTHLE3SPHL F9
InterruptControlProcessorControl
EI FB NOP00DIF3HLT 76
RIM 20
SIM 30
Restart
0 C7 1CF 2 D7RST3DF
4E75 EF 6 F7 7 FF