M68040 datasheet(38/442 Pages) FREESCALE

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MOTOROLA

M68040 USER’S MANUAL

1- 17

Table 1-4. Instruction Set Summary (Continued)

Opcode

Operation

Syntax

FNEG 2

–(Source) ø FPn

FNEG.<fmt> <ea>,FPn

FNEG.X FPm,FPn

FNEG.X FPn

FrNEG.<fmt> <ea>,FPn3

FrNEG.X FPm,FPn3

FrNEG.X FPn 3

FNOP 2

None

FNOP

FRESTORE 2

If in supervisor state

then FPU State Frame ø Internal State

else TRAP

FRESTORE <ea>

FSAVE 2

If in supervisor state

then FPU Internal State ø State Frame

else TRAP

FSAVE <ea>

FScc 2

If condition true

then 1s ø Destination

else 0s ø Destination

FScc.SIZE <ea>

FSGLDIV

FPn

÷ Source ø FPn

FSGLDIV.<fmt> <ea>,FPn

FSGLDIV.X FPm,FPn

FSGLMUL

Source

× FPn ø FPn

FSGMUL.<fmt> <ea>,FPn

FSGLMUL.X FPm, FPn

FSQRT2

Square Root of Source ø FPn

FSQRT.<fmt> <ea>,FPn

FSQRT.X FPm,FPn

FSQRT.X FPn

FrSQRT.<fmt> <ea>,FPn3

FrSQRT FPm,FPn3

FrSQRT FPn3

FSUB2

FPn – Source ø FPn

FSUB.<fmt> <ea>,FPn

FSUB.X FPm,FPn

FrSUB.<fmt> <ea>,FPn3

FrSUB.X FPm,FPn3

FTRAPcc2

If condition true

then TRAP

FTRAPcc

FTRAPcc.W #<data>

FTRAPcc.L #<data>

FTST2

Condition Codes for Operand ø FPCC

FTST.<fmt> <ea>

FTST.X FPm

ILLEGAL

SSP – 2 ø SSP; Vector Offset ø (SSP);

SSP – 4 ø SSP; PC ø (SSP);

SSp – 2 ø SSP; SR ø (SSP);

Illegal Instruction Vector Address ø PC

ILLEGAL

JMP

Destination Address ø PC

JMP <ea>

JSR

SP – 4 ø SP; PC ø (SP)

Destination Address ø PC

JSR <ea>

LEA

<ea> ø An

LEA <ea>,An

LINK

SP – 4 ø SP; An ø(SP)

SP ø An, SP+d øSP

LINK An,dn

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