Motorola 68000 Instruction Set.

Condition Codes

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Assembler Data

Instruction Description Syntax Size X N Z V C

----------------------- --------- ---- ---------

ABCD Add BCD with extend Dx,Dy B-- * U * U *

-(Ax),-(Ay)

ADD ADD binary Dn,<ea> BWL * * * * *

<ea>,Dn

ADDA ADD binary to An <ea>,An -WL - - - - -

ADDI ADD Immediate #x,<ea> BWL * * * * *

ADDQ ADD 3-bit immediate #<1-8>,<ea> BWL * * * * *

ADDX ADD eXtended Dy,Dx BWL * * * * *

-(Ay),-(Ax)

AND Bit-wise AND <ea>,Dn BWL - * * 0 0

Dn,<ea>

ANDI Bit-wise AND with Immediate #<data>,<ea> BWL - * * 0 0

ASL Arithmetic Shift Left #<1-8>,Dy BWL * * * * *

Dx,Dy

<ea>

ASR Arithmetic Shift Right ... BWL * * * * *

Bcc Conditional Branch Bcc.S <label> BW- - - - - -

Bcc.W <label>

BCHG Test a Bit and CHanGe Dn,<ea> B-L - - * - -

#<data>,<ea>

BCLR Test a Bit and CLeaR ... B-L - - * - -

BSET Test a Bit and SET ... B-L - - * - -

BSR Branch to SubRoutine BSR.S <label> BW- - - - - -

BSR.W <label>

BTST Bit TeST Dn,<ea> B-L - - * - -

#<data>,<ea>

CHK CHecK Dn Against Bounds <ea>,Dn -W- - * U U U

CLR CLeaR <ea> BWL - 0 1 0 0

CMP CoMPare <ea>,Dn BWL - * * * *

CMPA CoMPare Address <ea>,An -WL - * * * *

CMPI CoMPare Immediate #<data>,<ea> BWL - * * * *

CMPM CoMPare Memory (Ay)+,(Ax)+ BWL - * * * *

DBcc Looping Instruction DBcc Dn,<label> -W- - - - - -

DIVS DIVide Signed <ea>,Dn -W- - * * * 0

DIVU DIVide Unsigned <ea>,Dn -W- - * * * 0

EOR Exclusive OR Dn,<ea> BWL - * * 0 0

EORI Exclusive OR Immediate #<data>,<ea> BWL - * * 0 0

EXG Exchange any two registers Rx,Ry --L - - - - -

EXT Sign EXTend Dn -WL - * * 0 0

ILLEGAL ILLEGAL-Instruction Exception ILLEGAL - - - - -

JMP JuMP to Affective Address <ea> - - - - -

JSR Jump to SubRoutine <ea> - - - - -

LEA Load Effective Address <ea>,An --L - - - - -

LINK Allocate Stack Frame An,#<displacement> - - - - -

LSL Logical Shift Left Dx,Dy BWL * * * 0 *

#<1-8>,Dy

<ea>

LSR Logical Shift Right ... BWL * * * 0 *

MOVE Between Effective Addresses <ea>,<ea> BWL - * * 0 0

MOVE To CCR <ea>,CCR -W- I I I I I

MOVE To SR <ea>,SR -W- I I I I I

MOVE From SR SR,<ea> -W- - - - - -

MOVE USP to/from Address Register USP,An --L - - - - -

An,USP

MOVEA MOVE Address <ea>,An -WL - - - - -

MOVEM MOVE Multiple <register list>,<ea> -WL - - - - -

<ea>,<register list>

MOVEP MOVE Peripheral Dn,x(An) -WL - - - - -

x(An),Dn

MOVEQ MOVE 8-bit immediate #<-128.+127>,Dn --L - * * 0 0

MULS MULtiply Signed <ea>,Dn -W- - * * 0 0

MULU MULtiply Unsigned <ea>,Dn -W- - * * 0 0

NBCD Negate BCD <ea> B-- * U * U *

NEG NEGate <ea> BWL * * * * *

NEGX NEGate with eXtend <ea> BWL * * * * *

NOP No OPeration NOP - - - - -

NOT Form one's complement <ea> BWL - * * 0 0

OR Bit-wise OR <ea>,Dn BWL - * * 0 0

Dn,<ea>

ORI Bit-wise OR with Immediate #<data>,<ea> BWL - * * 0 0

PEA Push Effective Address <ea> --L - - - - -

RESET RESET all external devices RESET - - - - -

ROL ROtate Left #<1-8>,Dy BWL - * * 0 *

Dx,Dy

<ea>

ROR ROtate Right ... BWL - * * 0 *

ROXL ROtate Left with eXtend ... BWL * * * 0 *

ROXR ROtate Right with eXtend ... BWL * * * 0 *

RTE ReTurn from Exception RTE I I I I I

RTR ReTurn and Restore RTR I I I I I

RTS ReTurn from Subroutine RTS - - - - -

SBCD Subtract BCD with eXtend Dx,Dy B-- * U * U *