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MC68008

8-/16-/32-Bit Microprocessors User’s Manual

Freescale Semiconductor 

Freescale Semiconductor, Inc.

Table 2-2. Instruction Set Summary (Sheet 3 of 4)

Opcode

Operation

MOVE USP If supervisor state

then USP → An or An → USP

else TRAP

MOVEC

If supervisor state

then Rc → Rn or Rn → Rc

else TRAP

MOVEM Registers → Destination

Source → Registers

MOVEP Source → Destination

MOVEQ

MOVES

MULS

MULU

NBCD

NEG

NEGX

NOP

NOT

OR

Immediate Data → Destination

If supervisor state

then Rn → Destination [DFC] or Source [SFC] → Rn

else TRAP

Source × Destination → Destination

Source × Destination → Destination

0 – (Destination10) – X → Destination

0 – (Destination) → Destination

0 – (Destination) – X → Destination

None

~Destination → Destination

Source V Destination → Destination

ORI

Immediate Data V Destination → Destination

ORI to CCR Source V CCR → CCR

ORI to SR

If supervisor state

then Source V SR → SR

else TRAP

PEA

Sp – 4 → SP; <ea> → (SP)

RESET

If supervisor state

then Assert RESET Line

else TRAP

ROL, ROR Destination Rotated by <count> → Destination

ROXL,

ROXR

Destination Rotated with X by <count> → Destination

RTD

(SP) → PC; SP + 4 + d → SP

Syntax

MOVE USP,An

MOVE An,USP

MOVEC Rc,Rn

MOVEC Rn,Rc

MOVEM register list,<ea>

MOVEM <ea>,register list

MOVEP Dx,(d,Ay)

MOVEP (d,Ay),Dx

MOVEQ # <data>,Dn

MOVES Rn,<ea>

MOVES <ea>,Rn

MULS.W <ea>,Dn

MULU.W <ea>,Dn

NBCD <ea>

NEG <ea>

NEGX <ea>

NOP

NOT <ea>

OR <ea>,Dn

OR Dn,<ea>

ORI # <data>,<ea>

ORI # <data>,CCR

ORI # <data>,SR

16 x 16 → 32

16 x 16 → 32

PEA <ea>

RESET

ROd1 Rx,Dy

ROd1 # <data>,Dy

ROd1 <ea>

ROXd1 Dx,Dy

ROXd1 # <data>,Dy

ROXd1 <ea>

RTD #<displacement>

MOTOROLA

M68000 8-/16-/32-BIT MICROPROCESSOR USER’S MANUAL

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