M68040 datasheet(41/442 Pages) FREESCALE

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M68040 USER’S MANUAL

MOTOROLA

Table 1-4. Instruction Set Summary (Concluded)

Opcode

Operation

Syntax

SUBA

Destination – Source ø Destination

SUBA <ea>,An

SUBI

Destination – Immediate Data ø Destination

SUBI #<data>,<ea>

SUBQ

Destination – Immediate Data ø Destination

SUBQ #<data>,<ea>

SUBX

Destination – Source – X ø Destination

SUBX Dx,Dy

SUBX –(Ax),–(Ay)

SWAP

¯ ø Register 15–0

SWAP Dn

TAS

Destination Tested ø Condition Codes;

1 ø bit 7 of Destination

TAS <ea>

TRAP

SSP – 2 ø SSP; Format

÷ Offset ø (SSP);

SSP – 4 ø SSP; PC ø (SSP); SSP – 2 øSSP;

SR ø (SSP); Vector Address ø PC

TRAP #<vector>

TRAPcc

If cc

then TRAP

TRAPcc

TRAPcc.W #<data>

TRAPcc.L #<data>

TRAPV

If V

then TRAP

TRAPV

TST

Destination Tested ø Condition Codes

TST <ea>

UNLK

An ø SP; (SP) øAn; SP + 4 ø SP

UNLK An

UNPK

Source (Packed BCD) + adjustment ø Destination

(Unpacked BCD)

UNPACK –(Ax),–(Ay),#(adjustment)

UNPACK Dx,Dy,#(adjustment)

NOTES:

1. Where d is direction, left or right.

2. Available only on the MC68040.

3. Where r is rounding precision, single or double precision.

4. List refers to register.

5. List refers to control registers only.

6. Available only on the MC68040V and MC68EC040V.

7. MOVE16 (ax)+,(ay)+ is functionally the same as MOVE16 (ax),(ay)+ when ax = ay. The address register is only

incremented once, and the line is copied over itself rather than to the next line.

8. Not available for the MC68EC040 or MC68EC040V.

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