Table of Parameters
This table shows a summary of the SCUMM V5 opcodes and their parameters in a concise fashion.
Argument types:
- V = variable
- B = byte constant
- W = word constant
- P8 = variable or byte
- P16 = variable or word
- L = list
- J = jump (used by almost all boolean expressions, comparisons) (equivalent to W)
- D = delay; 24-bit constant (only used by delay instruction, strangely enough)
- A = ASCII string, terminated by the following argument ($00, $FF, $FE...)
- A0 = ASCII string, null-terminated
- A1 = ASCII string, $FF terminated
- FF = the hex value $FF, used for terminating some lists, strings etc.
- SO = sub-opcode, variants listed underneath as "opcode$sub-opcode"
- NS = non-standard encoding that cannot be sufficiently expressed in this table
- + = one or more of the preceding argument (parameter bits usually don't matter)
- None = does not take that argument argument
| Instruction |
Opcode |
Descumm equiv. |
Returns a Value |
Arg 1 |
Arg 2 |
Arg 3
|
| actorFollowCamera
|
$52
|
==
|
False
|
P8
|
None
|
None
|
| actorFromPos
|
$15
|
==
|
True
|
P16
|
P16
|
None
|
| actorOps
|
$13
|
ActorOps
|
False
|
P8
|
SO+
|
FF
|
| actorOps$00
|
$00
|
Unknown
|
False
|
P8
|
None
|
None
|
| actorOps$01
|
$01
|
Costume
|
False
|
P8
|
None
|
None
|
| actorOps$02
|
$02
|
WalkSpeed
|
False
|
P8
|
P8
|
None
|
| actorOps$03
|
$03
|
Sound
|
False
|
P8
|
None
|
None
|
| actorOps$04
|
$04
|
WalkAnimNr
|
False
|
P8
|
None
|
None
|
| actorOps$05
|
$05
|
TalkAnimNr
|
False
|
P8
|
P8
|
None
|
| actorOps$06
|
$06
|
StandAnimNr
|
False
|
P8
|
None
|
None
|
| actorOps$07
|
$07
|
Nothing
|
False
|
P8
|
P8
|
P8
|
| actorOps$08
|
$08
|
Init
|
False
|
None
|
None
|
None
|
| actorOps$09
|
$09
|
Elevation
|
False
|
P16
|
None
|
None
|
| actorOps$0A
|
$0A
|
DefaultAnims
|
False
|
None
|
None
|
None
|
| actorOps$0B
|
$0B
|
Palette
|
False
|
P8
|
P8
|
None
|
| actorOps$0C
|
$0C
|
TalkColor
|
False
|
P8
|
None
|
None
|
| actorOps$0D
|
$0D
|
Name
|
False
|
A0
|
None
|
None
|
| actorOps$0E
|
$0E
|
InitAnimNr
|
False
|
P8
|
None
|
None
|
| actorOps$10
|
$10
|
Width
|
False
|
P8
|
None
|
None
|
| actorOps$11
|
$11
|
Scale
|
False
|
P8
|
P8
|
None
|
| actorOps$12
|
$12
|
NeverZClip
|
False
|
None
|
None
|
None
|
| actorOps$13
|
$13
|
SetZClip
|
False
|
P8
|
None
|
None
|
| actorOps$14
|
$14
|
IgnoreBoxes
|
False
|
None
|
None
|
None
|
| actorOps$15
|
$15
|
FollowBoxes
|
False
|
P8
|
None
|
None
|
| actorOps$16
|
$16
|
AnimSpeed
|
False
|
P8
|
None
|
None
|
| actorOps$17
|
$17
|
ShadowMode
|
False
|
P8
|
None
|
None
|
| actorSetClass
|
$5D
|
setClass
|
False
|
P16
|
L
|
None
|
| add
|
$5A
|
(inline)
|
True
|
P16
|
None
|
None
|
| and
|
$17
|
(inline)
|
True
|
P16
|
None
|
None
|
| animateActor
|
$11
|
animateCostume
|
False
|
P8
|
P8
|
None
|
| breakHere
|
$80
|
==
|
False
|
None
|
None
|
None
|
| chainScript
|
$42
|
==
|
False
|
P8
|
L
|
None
|
| cursorCommand
|
$2C
|
(none)
|
False
|
SO
|
None
|
None
|
| cursorCommand$01
|
$01
|
CursorShow
|
False
|
None
|
None
|
None
|
| cursorCommand$02
|
$02
|
CursorHide
|
False
|
None
|
None
|
None
|
| cursorCommand$03
|
$03
|
UserputOn
|
False
|
None
|
None
|
None
|
| cursorCommand$04
|
$04
|
UserputOff
|
False
|
None
|
None
|
None
|
| cursorCommand$05
|
$05
|
CursorSoftOn
|
False
|
None
|
None
|
None
|
| cursorCommand$06
|
$06
|
CursorSoftOff
|
False
|
None
|
None
|
None
|
| cursorCommand$07
|
$07
|
UserputSoftOn
|
False
|
None
|
None
|
None
|
| cursorCommand$08
|
$08
|
UserputSoftOff
|
False
|
None
|
None
|
None
|
| cursorCommand$0A
|
$0A
|
SetCursorImg
|
False
|
P8
|
P8
|
None
|
| cursorCommand$0B
|
$0B
|
setCursorHotspot
|
False
|
P8
|
P8
|
P8
|
| cursorCommand$0C
|
$0C
|
InitCursor
|
False
|
P8
|
None
|
None
|
| cursorCommand$0D
|
$0D
|
InitCharset
|
False
|
P8
|
None
|
None
|
| cursorCommand$0E
|
$0E
|
CursorCommand
|
False
|
L
|
None
|
None
|
| cutscene
|
$40
|
==
|
False
|
L
|
None
|
None
|
| debug
|
$6B
|
debug?
|
False
|
P16
|
None
|
None
|
| decrement
|
$C6
|
(inline)
|
True
|
None
|
None
|
None
|
| delay
|
$2E
|
==
|
False
|
D
|
None
|
None
|
| delayVariable
|
$2B
|
==
|
False
|
V
|
None
|
None
|
| divide
|
$5B
|
(inline)
|
True
|
P16
|
None
|
None
|
| doSentence
|
$19
|
==
|
False
|
P8
|
P16
|
P16
|
| drawBox
|
$3F
|
==
|
False
|
P16
|
P16
|
NS
|
| drawObject
|
$05
|
==
|
False
|
P16
|
SO
|
None
|
| drawObject$01
|
$01
|
setXY
|
False
|
P16
|
P16
|
None
|
| drawObject$02
|
$02
|
setImage
|
False
|
P16
|
None
|
None
|
| drawObject$1F
|
$1F
|
()
|
False
|
None
|
None
|
None
|
| dummy
|
$A7
|
dummy(A7)
|
False
|
None
|
None
|
None
|
| endCutscene
|
$C0
|
==
|
False
|
None
|
None
|
None
|
| equalZero
|
$28
|
inline
|
False
|
V
|
J
|
None
|
| expression
|
$AC
|
Exprmode
|
True
|
SO+
|
FF
|
None
|
| expression$01
|
$01
|
(inline)
|
False
|
P16
|
None
|
None
|
| expression$02
|
$02
|
(inline)
|
False
|
None
|
None
|
None
|
| expression$03
|
$03
|
(inline)
|
False
|
None
|
None
|
None
|
| expression$04
|
$04
|
(inline)
|
False
|
None
|
None
|
None
|
| expression$05
|
$05
|
(inline)
|
False
|
None
|
None
|
None
|
| expression$06
|
$06
|
(inline)
|
False
|
NS
|
None
|
None
|
| faceActor
|
$09
|
==
|
False
|
P8
|
P16
|
None
|
| findInventory
|
$3D
|
==
|
True
|
P8
|
P8
|
None
|
| findObject
|
$35
|
==
|
True
|
P8
|
P8
|
None
|
| freezeScripts
|
$60
|
==
|
False
|
P8
|
None
|
None
|
| getActorCostume
|
$71
|
==
|
True
|
P8
|
None
|
None
|
| getActorElevation
|
$06
|
==
|
True
|
P8
|
None
|
None
|
| getActorFacing
|
$63
|
==
|
True
|
P8
|
None
|
None
|
| getActorMoving
|
$56
|
==
|
True
|
P8
|
None
|
None
|
| getActorRoom
|
$03
|
==
|
True
|
P8
|
None
|
None
|
| getActorScale
|
$3B
|
==
|
True
|
P8
|
None
|
None
|
| getActorWalkBox
|
$7B
|
==
|
True
|
P8
|
None
|
None
|
| getActorWidth
|
$6C
|
==
|
True
|
P8
|
None
|
None
|
| getActorX
|
$43
|
==
|
True
|
P16
|
None
|
None
|
| getActorY
|
$23
|
==
|
True
|
P16
|
None
|
None
|
| getAnimCounter
|
$22
|
==
|
True
|
P8
|
None
|
None
|
| getClosestObjActor
|
$66
|
==
|
True
|
P16
|
None
|
None
|
| getDist
|
$34
|
==
|
True
|
P16
|
P16
|
None
|
| getInventoryCount
|
$31
|
==
|
True
|
P8
|
None
|
None
|
| getObjectOwner
|
$10
|
==
|
True
|
P16
|
None
|
None
|
| getObjectState
|
$0F
|
==
|
True
|
P16
|
None
|
None
|
| getRandomNumber
|
$16
|
getRandomNr
|
True
|
P8
|
None
|
None
|
| getScriptRunning
|
$68
|
isScriptRunning
|
True
|
P8
|
None
|
None
|
| getStringWidth
|
$67
|
==
|
True
|
P8
|
None
|
None
|
| getVerbEntryPoint
|
$0B
|
==
|
True
|
P16
|
P16
|
None
|
| ifClassOfIs
|
$1D
|
classOfIs
|
False
|
P16
|
L
|
J
|
| ifNotState
|
$2F
|
getState (inline)
|
False
|
P16
|
P8
|
J
|
| ifState
|
$4F
|
getState (inline)
|
False
|
P16
|
P8
|
J
|
| increment
|
$46
|
(inline)
|
True
|
None
|
None
|
None
|
| isActorInBox
|
$1F
|
==
|
False
|
P8
|
P8
|
J
|
| isEqual
|
$48
|
(inline)
|
False
|
V
|
P16
|
J
|
| isGreater
|
$78
|
(inline)
|
False
|
V
|
P16
|
J
|
| isGreaterEqual
|
$04
|
(inline)
|
False
|
V
|
P16
|
J
|
| isLess
|
$44
|
(inline)
|
False
|
V
|
P16
|
J
|
| isNotEqual
|
$08
|
(inline)
|
False
|
V
|
P16
|
J
|
| isSoundRunning
|
$7C
|
==
|
True
|
P8
|
None
|
None
|
| jumpRelative
|
$18
|
(inline) or goto
|
False
|
J
|
None
|
None
|
| lessOrEqual
|
$38
|
(inline)
|
False
|
V
|
P16
|
J
|
| lights
|
$70
|
==
|
False
|
P8
|
B
|
B
|
| loadRoom
|
$72
|
==
|
False
|
P8
|
None
|
None
|
| loadRoomWithEgo
|
$24
|
==
|
False
|
P16
|
P8
|
NS
|
| matrixOp
|
$30
|
N/A
|
False
|
SO
|
None
|
None
|
| matrixOp$01
|
$01
|
setBoxFlags
|
False
|
P8
|
P8
|
None
|
| matrixOp$02
|
$02
|
setBoxScale
|
False
|
P8
|
P8
|
None
|
| matrixOp$03
|
$03
|
SetBoxSlot
|
False
|
P8
|
P8
|
None
|
| matrixOp$04
|
$04
|
createBoxMatrix
|
False
|
None
|
None
|
None
|
| move
|
$1A
|
(inline)
|
True
|
P16
|
None
|
None
|
| multiply
|
$1B
|
(inline)
|
True
|
P16
|
None
|
None
|
| notEqualZero
|
$A8
|
(inline)
|
False
|
V
|
J
|
None
|
| oldRoomEffect
|
$5C
|
oldRoomEffect-fadein
|
False
|
SO
|
None
|
None
|
| oldRoomEffect$03
|
$03
|
oldRoomEffect-set
|
False
|
P16
|
None
|
None
|
| or
|
$57
|
(inline)
|
True
|
P16
|
None
|
None
|
| override
|
$58
|
N/A
|
False
|
SO
|
None
|
None
|
| override$00
|
$00
|
endOverride
|
False
|
None
|
None
|
None
|
| override$01
|
$01
|
beginOverride
|
False
|
NS
|
J
|
None
|
| panCameraTo
|
$12
|
==
|
False
|
P16
|
None
|
None
|
| pickupObject
|
$25
|
==
|
False
|
P16
|
P8
|
None
|
| pickupObjectOld
|
$50
|
pickupObject
|
False
|
P16
|
None
|
None
|
| print
|
$14
|
==
|
False
|
P8
|
SO+
|
None
|
| print$00
|
$00
|
Pos
|
False
|
P16
|
P16
|
None
|
| print$01
|
$01
|
Color
|
False
|
P8
|
None
|
None
|
| print$02
|
$02
|
Clipped
|
False
|
P16
|
None
|
None
|
| print$03
|
$03
|
RestoreBG
|
False
|
P16
|
P16
|
None
|
| print$04
|
$04
|
Center
|
False
|
None
|
None
|
None
|
| print$06
|
$06
|
Left
|
False
|
None
|
None
|
None
|
| print$07
|
$07
|
Overhead
|
False
|
None
|
None
|
None
|
| print$08
|
$08
|
PlayCDTrack
|
False
|
P16
|
P16
|
None
|
| print$0F
|
$0F
|
Text()
|
False
|
A1
|
None
|
None
|
| printEgo
|
$D8
|
==
|
False
|
SO+
|
None
|
None
|
| printEgo$00
|
$00
|
Pos
|
False
|
P16
|
P16
|
None
|
| printEgo$01
|
$01
|
Color
|
False
|
P8
|
None
|
None
|
| printEgo$02
|
$02
|
Clipped
|
False
|
P16
|
None
|
None
|
| printEgo$03
|
$03
|
RestoreBG
|
False
|
P16
|
P16
|
None
|
| printEgo$04
|
$04
|
Center
|
False
|
None
|
None
|
None
|
| printEgo$06
|
$06
|
Left
|
False
|
None
|
None
|
None
|
| printEgo$07
|
$07
|
Overhead
|
False
|
None
|
None
|
None
|
| printEgo$08
|
$08
|
PlayCDTrack
|
False
|
P16
|
P16
|
None
|
| printEgo$0F
|
$0F
|
Text()
|
False
|
A1
|
None
|
None
|
| pseudoRoom
|
$CC
|
PsuedoRoom
|
False
|
B
|
NS
|
NS
|
| putActor
|
$01
|
==
|
False
|
P8
|
P16
|
P16
|
| putActorAtObject
|
$0E
|
==
|
False
|
P8
|
P16
|
None
|
| putActorInRoom
|
$2D
|
==
|
False
|
P8
|
P8
|
None
|
| resourceRoutines
|
$0C
|
Resource.
|
False
|
SO
|
None
|
None
|
| resourcesRoutines$01
|
$01
|
loadScript
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$02
|
$02
|
loadSound
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$03
|
$03
|
loadCostume
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$04
|
$04
|
loadRoom
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$05
|
$05
|
nukeScript
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$06
|
$06
|
nukeSound
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$07
|
$07
|
nukeCostume
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$08
|
$08
|
nukeRoom
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$09
|
$09
|
lockScript
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$0A
|
$0A
|
lockSound
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$0B
|
$0B
|
lockCostume
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$0C
|
$0C
|
lockRoom
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$0D
|
$0D
|
unlockScript
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$0E
|
$0E
|
unlockSound
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$0F
|
$0F
|
unlockCostume
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$10
|
$10
|
unlockRoom
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$11
|
$11
|
clearHeap
|
False
|
None
|
None
|
None
|
| resourcesRoutines$12
|
$12
|
loadCharset
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$13
|
$13
|
nukeCharset
|
False
|
P8
|
None
|
None
|
| resourcesRoutines$14
|
$14
|
loadFlObject
|
False
|
P8
|
P16
|
None
|
| roomOps
|
$33
|
N/A
|
False
|
SO
|
None
|
None
|
| roomOps$01
|
$01
|
RoomScroll
|
False
|
P16
|
P16
|
None
|
| roomOps$03
|
$03
|
SetScreen
|
False
|
P16
|
P16
|
None
|
| roomOps$04
|
$04
|
SetPalColor
|
False
|
P16
|
P16
|
NS
|
| roomOps$05
|
$05
|
ShakeOn
|
False
|
None
|
None
|
None
|
| roomOps$06
|
$06
|
ShakeOff
|
False
|
None
|
None
|
None
|
| roomOps$07
|
$07
|
Unused
|
False
|
P8
|
P8
|
NS
|
| roomOps$08
|
$08
|
RoomIntensity
|
False
|
P8
|
P8
|
P8
|
| roomOps$09
|
$09
|
saveLoad?
|
False
|
P8
|
P8
|
None
|
| roomOps$0A
|
$0A
|
screenEffect?
|
False
|
P16
|
None
|
None
|
| roomOps$0B
|
$0B
|
setRGBRoomIntensity
|
False
|
P16
|
P16
|
NS
|
| roomOps$0C
|
$0C
|
setRoomShadow
|
False
|
P16
|
P16
|
NS
|
| roomOps$0D
|
$0D
|
saveString
|
False
|
P8
|
A0
|
None
|
| roomOps$0E
|
$0E
|
loadString
|
False
|
P8
|
A0
|
None
|
| roomOps$0F
|
$0F
|
palManipulate
|
False
|
P8
|
NS
|
NS
|
| roomOps$10
|
$10
|
colorCycleDelay
|
False
|
P8
|
P8
|
None
|
| saveRestoreVerbs
|
$AB
|
N/A
|
False
|
NS
|
NS
|
NS
|
| saveRestoreVerbs$01
|
$01
|
saveVerbs
|
False
|
None
|
None
|
None
|
| saveRestoreVerbs$02
|
$02
|
restoreVerbs
|
False
|
None
|
None
|
None
|
| saveRestoreVerbs$03
|
$03
|
deleteVerbs
|
False
|
None
|
None
|
None
|
| setCameraAt
|
$32
|
==
|
False
|
P16
|
None
|
None
|
| setObjectName
|
$54
|
==
|
False
|
P16
|
A0
|
None
|
| setOwnerOf
|
$29
|
==
|
False
|
P16
|
P8
|
None
|
| setState
|
$07
|
==
|
False
|
P16
|
P8
|
None
|
| setVarRange
|
$26
|
==
|
True
|
B
|
NS
|
NS
|
| soundKludge
|
$4C
|
==
|
False
|
L
|
None
|
None
|
| startMusic
|
$02
|
==
|
False
|
P8
|
None
|
None
|
| startObject
|
$37
|
==
|
False
|
P16
|
P8
|
L
|
| startScript
|
$0A
|
==
|
False
|
P8
|
L
|
None
|
| startSound
|
$1C
|
==
|
False
|
P8
|
None
|
None
|
| stopMusic
|
$20
|
==
|
False
|
None
|
None
|
None
|
| stopObjectCode
|
$A0
|
==
|
False
|
None
|
None
|
None
|
| stopObjectScript
|
$6E
|
==
|
False
|
P16
|
None
|
None
|
| stopScript
|
$62
|
==
|
False
|
P8
|
None
|
None
|
| stopSound
|
$3C
|
==
|
False
|
P8
|
None
|
None
|
| stringOps
|
$27
|
==
|
False
|
SO
|
None
|
None
|
| stringOps$01
|
$01
|
PutCodeInString
|
False
|
P8
|
A0
|
None
|
| stringOps$02
|
$02
|
CopyString
|
False
|
P8
|
P8
|
None
|
| stringOps$03
|
$03
|
SetStringChar
|
False
|
P8
|
P8
|
B
|
| stringOps$04
|
$04
|
GetStringChar
|
True
|
P8
|
P8
|
None
|
| stringOps$05
|
$05
|
CreateString
|
False
|
P8
|
P8
|
None
|
| subtract
|
$3A
|
(inline)
|
True
|
P16
|
None
|
None
|
| systemOps
|
$98
|
systemOps
|
False
|
SO
|
None
|
None
|
| systemOps$01
|
$01
|
N/A
|
False
|
None
|
None
|
None
|
| systemOps$02
|
$02
|
N/A
|
False
|
None
|
None
|
None
|
| systemOps$03
|
$03
|
N/A
|
False
|
None
|
None
|
None
|
| verbOps
|
$7A
|
VerbOps
|
False
|
P8
|
SO+
|
FF
|
| verbOps$01
|
$01
|
Image
|
False
|
P16
|
None
|
None
|
| verbOps$02
|
$02
|
Text
|
False
|
A0
|
None
|
None
|
| verbOps$03
|
$03
|
Color
|
False
|
P8
|
None
|
None
|
| verbOps$04
|
$04
|
HiColor
|
False
|
P8
|
None
|
None
|
| verbOps$05
|
$05
|
SetXY
|
False
|
P16
|
P16
|
None
|
| verbOps$06
|
$06
|
On
|
False
|
None
|
None
|
None
|
| verbOps$07
|
$07
|
Off
|
False
|
None
|
None
|
None
|
| verbOps$08
|
$08
|
Delete
|
False
|
None
|
None
|
None
|
| verbOps$09
|
$09
|
New
|
False
|
None
|
None
|
None
|
| verbOps$10
|
$10
|
DimColor
|
False
|
P8
|
None
|
None
|
| verbOps$11
|
$11
|
Dim
|
False
|
None
|
None
|
None
|
| verbOps$12
|
$12
|
Key
|
False
|
P8
|
None
|
None
|
| verbOps$13
|
$13
|
Center
|
False
|
None
|
None
|
None
|
| verbOps$14
|
$14
|
SetToString
|
False
|
P16
|
None
|
None
|
| verbOps$16
|
$16
|
SetToObject
|
False
|
P16
|
P8
|
None
|
| verbOps$17
|
$17
|
BackColor
|
False
|
P8
|
None
|
None
|
| wait
|
$AE
|
N/A
|
False
|
SO
|
None
|
None
|
| wait$01
|
$01
|
WaitForActor
|
False
|
P8
|
None
|
None
|
| wait$02
|
$02
|
WaitForMessage
|
False
|
None
|
None
|
None
|
| wait$03
|
$03
|
WaitForCamera
|
False
|
None
|
None
|
None
|
| wait$04
|
$04
|
WaitForSentence
|
False
|
None
|
None
|
None
|
| walkActorTo
|
$1E
|
==
|
False
|
P8
|
P16
|
P16
|
| walkActorToActor
|
$0D
|
==
|
False
|
P8
|
P8
|
B
|
| walkActorToObject
|
$36
|
==
|
False
|
P8
|
P16
|
None
|
