[PDF] 6809 Instruction Set Instruction Mnemonic Addressing Mode

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6809 Instruction Set

Instruction

MnemonicAddressing Mode

Description

CC bit

ImmediateDirect

IndexedExtended

Inherent53210

Op~# Op~ #Op~#Op~#Op~#HNZVC ABX 3A3

1X = B+X (Unsigned)

ADC

ADCA89229942A94+

2+B953 A = A+M+C

ADCBC922D9

42E94+2+

F953

B = B+M+C

ADD

ADDA8B22

9B42AB4+2+BB5

3 A = A+M+++++

ADDBCB2

2 DB42

EB4+2+FB5 3 B = B+M+++++

ADDDC343D3

62E36+2+

F373

D = D+M:M+1 +++

+AND

ANDA842 2 94

42A4 4+ 2+ B4 5

3 A = A && M

0

ANDBC422D442E4

4+2+F453 B = B && M ++0

ANDCC1C

32

C = CC && IMM?????

ASLASLA 4821

Arithmetic

shift left 8++++ ASLB 5821
8++ ASL 086

2686+2+7873

8++++ ASR ASRA 472

1Arithmetic

shift right 8+

ASRB 57218++ +

ASR 07

62676+2+7773 8++ +

BIT

BITA852295

42A54+2+

B55 3

Bit Test A (M&&A)

++0

BITBC52

2D542E54+2+F553 Bit Test B (M&&B)

++0 CLR CLRA

4F21A = 0

01 00 CLRB 5F

21B = 0 010

0CLR 0F62

6F6+2+7F73 M = 0 0

100
CMP

CMPA81

229142A1 4+ 2+ B1 5 3 Compare M from A8++++

CMPBC1 2 2 D1 42E1 4+ 2+

F1 5 3

Compare M from B8++

CMPD 10 83

5 4 10

93
7310
A3

7+ 3+ 10

B3 8 4

Compare M:M+1

from D CMPS 11 8C

5 4 11

9C 7311
AC 7+ 3+ 11 BC 8 4

Compare M:M+1

from S +CMPU11 83
5 4 11

93 7311

A3 7+ 3+ 11 B3 8 4

Compare M:M+1

from U

CMPX8C

4 3 9C 62AC

6+ 2+ BC 7 3

Compare M:M+1from X

CMPY 10 8C

5 4 10

9C 73
10 AC

7+ 3+ 10

BC 8 4

Compare M:M+1

from Y COM

COMA 4321A = complement(A) ++01

COMB 532

1B = complement(B)

++01

COM 0362636+2+7373 M = complement(M)

+01

CWAI 3C

20 2

CC = CC ^ IMM;

Wait for Interrupt

7 DAA

19 21Decimal Adjust A

++0+ DEC DECA

4A21A = A 1 +++

DECB 5A21B = B 1 +++

DEC 0A626A6+2+7A73 M = M 1 +++

6809 Instruction Sethttp://ironbark.bendigo.latrobe.edu.au/staff/mal/6809.htm

EOR

EORA882298

42A8

4+2+B85 3 A = A XOR M ++0

EORBC822D842E84+

2+F853 B = M XOR B

++0

EXGR1,R21E 82

exchange R1,R2 INC INCA

4C21A = A + 1 +++

INCB 5C21B = B + 1 ++

INC 0C62

6C6+2+7C73 M = M + 1

JMP 0E326E3+2+7E43 pc = EA

JSR

9D72AD7+2+BD

83 jump to subroutine

6809 Instruction Set

InstructionMnemonic

Addressing Mode

Description

CC bit

ImmediateDirectIndexed

ExtendedInherent53

210
Op~#

Op~#Op~#Op~

#Op ~#HNZV CLD

LDA8622964 2A6 4+ 2+ B6 5 3

A = M ++0

LDBC6 2 2 D6 4 2E6 4+ 2+ F6 5 3 B = M +

+0 LDDCC

3 3 DC 5 2EC5+ 2+ FC6 3 D = M:M+1 ++

0 LDS 10

CE4 4 10

DE6 310

EE

6+ 3+ 10

FE 7

4 S = M:M+1 ++

0 LDUCE3 3 DE5 2EE 5+ 2+ FE 6 3 U = M:M+1 ++0

LDX8E3

3 9E 5 2AE 5+ 2+ BE 6 3 X = M:M+1 ++0

LDY 10 8E

4 4 10

9E 6 310 AE 6+ 3+ 10 BE 7 4

Y = M:M+1 ++0

LEA

LEAS 324+2+

S = EA

LEAU 334+

2+ U = EA

LEAX 304+2+ X = EA

LEAY

314+2+ Y = EA +

LSL LSLA 48
21

Logical

shiftleft LSLB

5821 ++++

LSL 0862686+2+7873

LSR LSRA 4421

Logical

shift right 0+ +

LSRB 5421

0+ + LSR

0462646+2+74

73 0+ +

MUL 3D111

D = A*B

(Unsigned) + 9

NEGNEGA 4021A = !A + 18++

++NEGB 50

21B = !B + 18++

NEG 0062

606+2+

7073 M = !M + 1

8+++ +NOP 12

21No Operation

OR

ORA8A2 2 9A 4 2AA 4+ 2+ BA 5 3 A = A || M ++0

ORBCA22DA42

EA4+2+

FA53 B = B || M

0 ORCC 1A32

C = CC || IMM?????

PSH PSHS

34 5+2

Push Registers onS Stack

PSHU 36
5+2

Push Registers on

U Stack

6809 Instruction Set

PUL PULS

35 5+2

Pull Registers

from S Stack PULU 375+2

Pull Registers

from U Stack ROL

ROLA 4921

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