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Processor Instruction Summary

A.4 MC68040 PROCESSORS

The following paragraphs provide information on the MC68040 instruction set and addressing modes.

A.4.1 MC68040 Instruction Set

Table A-10 lists the instructions used with the MC68040 processor.

 

Table A-10. MC68040 Instruction Set

 

 

 

Mnemonic

 

Description

 

 

 

ABCD

 

Add Decimal with Extend

ADD

 

Add

ADDA

 

Add Address

ADDI

 

Add Immediate

ADDQ

 

Add Quick

ADDX

 

Add with Extend

AND

 

Logical AND

ANDI

 

Logical AND Immediate

ANDI to CCR

 

AND Immediate to Condition Code Register

ANDI to SR

 

AND Immediate to Status Register

ASL, ASR

 

Arithmetic Shift Left and Right

 

 

 

Bcc

 

Branch Conditionally

BCHG

 

Test Bit and Change

BCLR

 

Test Bit and Clear

BFCHG

 

Test Bit Field and Change

BFCLR

 

Test Bit Field and Clear

BFEXTS

 

Signed Bit Field Extract

BFEXTU

 

Unsigned Bit Field Extract

BFFFO

 

Bit Field Find First One

BFINS

 

Bit Field Insert

BFSET

 

Test Bit Field and Set

BFTST

 

Test Bit Field

BKPT

 

Breakpoint

BRA

 

Branch

BSET

 

Test Bit and Set

BSR

 

Branch to Subroutine

BTST

 

Test Bit

 

 

 

CAS

 

Compare and Swap Operands

CAS2

 

Compare and Swap Dual Operands

CHK

 

Check Register Against Bound

CHK2

 

Check Register Against Upper and Lower Bounds

CINV

 

Invalidate Cache Entries

CLR

 

Clear

CMP

 

Compare

CMPA

 

Compare Address

 

 

 

MOTOROLA

MC68000 FAMILY PROGRAMMER’S REFERENCE MANUAL

A-25

Processor Instruction Summary

Table A-10. MC68040 Instruction Set (Continued)

Mnemonic

Description

CMPI

Compare Immediate

CMPM

Compare Memory to Memory

CMP2

Compare Register Against Upper and Lower Bounds

CPUSH

Push then Invalidate Cache Entries

 

 

DBcc

Test Condition, Decrement and Branch

DIVS, DIVSL

Signed Divide

DIVU, DIVUL

Unsigned Divide

 

 

EOR

Logical Exclusive-OR

EORI

Logical Exclusive-OR Immediate

EORI to CCR

Exclusive-OR Immediate to Condition Code Register

EORI to SR

Exclusive-OR Immediate to Status Register

EXG

Exchange Registers

EXT, EXTB

Sign Extend

 

 

FABS1

Floating-Point Absolute Value

FSABS, FDABS1

Floating-Point Absolute Value (Single/Double Precision)

FACOS1,2

Floating-Point Arc Cosine

FADD1

Floating-Point Add

FSADD, FDADD1

Floating-Point Add (Single/Double Precision)

FASIN1,2

Floating-Point Arc Sine

FATAN1,2

Floating-Point Arc Tangent

FATANH1,2

Floating-Point Hyperbolic Arc Tangent

FBcc1

Floating-Point Branch

FCMP1

Floating-Point Compare

FCOS1,2

Floating-Point Cosine

FCOSH1,2

Floating-Point Hyperbolic Cosine

FDBcc1

Floating-Point Decrement and Branch

FDIV1

Floating-Point Divide

FSDIV, FDDIV1

Floating-Point Divide (Single/Double Precision)

FETOX1,2

Floating-Point ex

FETOXM11,2

Floating-Point ex - 1

FGETEXP1,2

Floating-Point Get Exponent

FGETMAN1,2

Floating-Point Get Mantissa

FINT1,2

Floating-Point Integer Part

FINTRZ1,2

Floating-Point Integer Part, Round-to-Zero

FLOG101,2

Floating-Point Log10

FLOG21,2

Floating-Point Log2

FLOGN1,2

Floating-Point Loge

FLOGNP11,2

Floating-Point Loge (x + 1)

FMOD1,2

Floating-Point Modulo Remainder

FMOVE1

Move Floating-Point Register

FSMOVE, FDMOVE1

Move Floating-Point Register (Single/Double Precision)

FMOVECR1

Move Constant ROM

FMOVEM1

Move Multiple Floating-Point Registers

FMUL1

Floating-Point Multiply

FSMUL, FDMUL1

Floating-Point Multiply (Single/Double Precision)

A-26

MC68000 FAMILY PROGRAMMER’S REFERENCE MANUAL

MOTOROLA

 

 

Processor Instruction Summary

Table A-10. MC68040 Instruction Set (Continued)

 

 

 

 

Mnemonic

 

Description

 

FNEG1

Floating-Point Negate

 

FSNEG, FDNEG1

Floating-Point Negate (Single/Double Precision)

 

FNOP1

Floating-Point No Operation

 

FREM1,2

IEEE Remainder

 

FRESTORE1

Restore Floating-Point Internal State

 

FSAVE1

Save Floating-Point Internal State

 

FSCALE1,2

Floating-Point Scale Exponent

 

FScc1

Floating-Point Set According to Condition

 

FSGLDIV1,2

Single-Precision Divide

 

FSGLMUL1,2

Single-Precision Multiply

 

FSIN1,2

Sine

 

FSINCOS1,2

Simultaneous Sine and Cosine

 

FSINH1,2

Hyperbolic Sine

 

FSQRT1

Floating-Point Square Root

 

FSSQRT, FDSQRT1

Floating-Point Square Root (Single/Double Precision)

 

FSUB1

Floating-Point Subtract

 

FSSUB, FDSUB1

Floating-Point Subtract (Single/Double Precision)

 

FTAN1,2

Tangent

 

FTANH1,2

Hyperbolic Tangent

 

FTENTOX1,2

Floating-Point 10x

 

FTRAPcc1,2

Floating-Point Trap On Condition

 

FTST1

Floating-Point Test

 

FTWOTOX1,2

Floating-Point 2x

 

ILLEGAL

Take Illegal Instruction Trap

 

JMP

Jump

 

JSR

Jump to Subroutine

 

 

 

 

LEA

Load Effective Address

 

LINK

Link and Allocate

 

LSL, LSR

Logical Shift Left and Right

 

 

 

 

MOVE

Move

 

MOVEA

Move Address

 

MOVE from CCR

Move from Condition Code Register

 

MOVE to CCR

Move to Condition Code Register

 

MOVE from SR

Move from Status Register

 

MOVE to SR

Move to Status Register

 

MOVE USP

Move User Stack Pointer

 

MOVEC

Move Control Register

 

MOVEM

Move Multiple Registers

 

MOVEP

Move Peripheral

 

MOVEQ

Move Quick

 

MOVES

Move Alternate Address Space

 

MOVE16

16-Byte Block Move

 

MULS

Signed Multiply

 

MULU

Unsigned Multiply

 

 

 

 

 

MOTOROLA

MC68000 FAMILY PROGRAMMER’S REFERENCE MANUAL

A-27

Processor Instruction Summary

Table A-10. MC68040 Instruction Set (Concluded)

Mnemonic

Description

 

 

NBCD

Negate Decimal with Extend

NEG

Negate

NEGX

Negate with Extend

NOP

No Operation

NOT

Logical Complement

 

 

OR

Logical Inclusive-OR

ORI

Logical Inclusive-OR Immediate

ORI to CCR

Inclusive-OR Immediate to Condition Code Register

ORI to SR

Inclusive-OR Immediate to Status Register

 

 

PACK

Pack BCD

PEA

Push Effective Address

PFLUSH

Flush Entry(ies) in the ATCs

PFLUSHA

Flush all Entry(ies) in the ATCs

PTEST

Test a Logical Address

 

 

RESET

Reset External Devices

ROL, ROR

Rotate Left and Right

ROXL, ROXR

Rotate with Extend Left and Right

RTD

Return and Deallocate

RTE

Return from Exception

RTR

Return and Restore

RTS

Return from Subroutine

 

 

SBCD

Subtract Decimal with Extend

Scc

Set Conditionally

STOP

Stop

SUB

Subtract

SUBA

Subtract Address

SUBI

Subtract Immediate

SUBQ

Subtract Quick

SUBX

Subtract with Extend

SWAP

Swap Register Words

 

 

TAS

Test Operand and Set

TRAP

Trap

TRAPcc

Trap Conditionally

TRAPV

Trap on Overflow

TST

Test Operand

 

 

UNLK

Unlink

UNPK

Unpack BCD

 

 

NOTES:

1.Not applicable to the MC68EC040 and MC68LC040.

2.These instructions are software supported.

A-28

MC68000 FAMILY PROGRAMMER’S REFERENCE MANUAL

MOTOROLA

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