SCUMM/V5 opcodes/Table

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	NS	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	P8	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	NS	NS
roomOps$0E	$0E	loadString	False	P8	NS	NS
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	$00	==	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