Routines

Address	Length	Description
23820	64	Game loader - load game code and set execution starting address
31744	3	Launch the initial game menus
31747	170	Draw decorative screen border graphics
31917	372	Draw game screen decorative border (colours)
32289	260	Draw the inner border for the intro sequence
32549	276	Draw the intro sequence landscape
32825	104	Menu 1: Print control options
32929	32	Menu 1: Scan keyboard input for control option selection
32961	60	Menu 1: Highlight/store selected control option (1-4)
33021	30	Menu 1: Check if ENTER pressed to confirm player controls
33051	18	Menu 2: Print the menu
33069	46	Menu 2: Check for ENTER or LOAD keys being pressed
33115	30	Clear the menu screen
33145	65	Menu text PRINT routine
33267	52	Drawing routine (decorative border and intro sequence background)
33319	56	Drawing routine used for intro sequence graphics
48922	25	Initialize game
48947	45	Load saved game
48992	61	Start game
49053	162	New game initialization - set up game data
49215	59	Run new game intro sequence
49274	31	Intro sequence lightning - flashing & sound effects
49305	10	Intro sequence - move Maroc's sprite down one pixel
49315	30	Maroc out of energy - clear scroll, calculate & print rank
49345	70	Place/replace Maroc in the start room
49415	83	Reset various room-based game data ready for a new room
49498	102	Room initialization - identify room data set and scenery style, reset room/viewport position
49600	32	Set up LEFT vertical wall/floor connector graphics
49632	47	Set up room background scenery - part 1
49679	86	Set up room background scenery - part 2
49765	43	Check for and set up back wall brickwork/rock scenery
49808	50	Set up room floor-wall connector graphics
49858	54	Calculate horizontal/vertical room co-ordinates for each room section/components
49912	53	Set up RIGHT vertical wall/floor connector graphics
49965	28	Check room item data sets to see if any doors need setting up
49993	225	New room - door setup
50218	54	Identify room's interactable objects
50272	161	Set up the room's creatures
50433	112	Set up room foreground scenery objects - part 1
50545	68	Adjust room element co-ordinates based on Maroc's room entry point
50613	50	Tunnel room - identify the connecting door set
50663	49	Set up tunnel
50712	35	Start of tunnel data setup
50747	60	Calculate and set current room attribute colours
50807	45	Identify and set up level name for printing on scroll
50870	162	Start of game cycle - control checks
51032	11	Pause game routine - check if 'pause' key pressed
51043	55	Pause game routine - play tune and check user input
51098	43	Pause game routine - save the current game
51141	11	Pause game routine - check if 'resume game' key is pressed
51152	26	Start of main game loop
51178	77	Copy current room item data set into working buffer
51255	104	Adjust room item's position based on the speed and direction of Maroc and the item
51359	61	Deal with and check room item, creature or scenery
51420	131	Determine if creatures will enter the current room
51551	60	Check which creatures are entering the room
51611	91	Check for an on-screen door being opened or closed
51702	111	Check if Maroc is moving through an open doorway
51813	41	Maroc is moving through a doorway
51854	38	Trigger door opening or closing
51892	76	Door opening or closing
51968	76	Set up 'interactable' objects in current room
52044	15	Servant has dropped a held item
52059	59	Handle interactable objects that are falling/flying
52118	18	Check if servant has moved away from Maroc after retrieving an item
52136	127	Determine movement of room items/creatures that move around the screen
52263	75	Check and change object state after positive events match/collision
52338	54	Check if Maroc has picked up (or been given) a spell or item
52392	53	Maroc has picked up a spell
52445	68	Maroc has picked up an item
52513	69	Check for an object trade with warlock
52582	34	Check for servant picking up an object
52616	79	Deal with creature in room - create footstep sounds and check for missile collisions
52695	154	Change creature behaviour based on Maroc's magic
52849	64	Maroc is trading items with a warlock
52913	35	Maroc has offered an object of insufficient value to a warlock
52948	55	Decide whether a warlock will fire a missile/bolt at Maroc
53003	51	UNSEEN spell effect on creature movement
53054	26	Goblin warrior - check if movement is affected by Maroc's magic power
53080	65	Initialize missile/bolt fired by a creature
53145	128	Warlock or creature - materialization & disintegration events
53273	50	Warlock - drop carried object
53323	26	Creature collision check with room boundary and Maroc
53349	23	Creature has collided with Maroc
53372	31	Maroc has destroyed a creature - initialise disintegration
53403	81	Missile fired by Maroc or a creature - check for active shield/barrier spells
53484	42	Creature's missile has hit Maroc's shield/barrier
53526	24	Check if a missile fired by a creature has hit Maroc, and if so reduce his energy
53550	51	Check missile room boundary collisions and on-screen lifespan
53601	24	Copy co-ordinates of room's left/right wall connector sections to working buffer
53625	89	Tunnel position & direction
53714	45	Check tunnel item type for collision checks and movement (boundary, bats and spiders)
53759	28	BAT movement in tunnel section
53787	32	Tunnel item (boundary or bat/spider) has gone off-screen - reduce on-screen item count
53819	51	Tunnels - check if Maroc has hit a left/right boundary wall
53870	15	Start of setting up room routine
53885	168	Drawing checks and routines for all on-screen room items
54053	12	Start of setting up room routine - part 2
54065	55	Flash the 'MAGIC' text in the bottom left (if Maroc has picked up a spell) and trigger sound effect
54120	222	Determine Maroc's sprite graphic position, height and direction
54342	51	Draw Maroc's sprite graphic
54393	36	Check if Maroc is on a room element/item that drains or restores his energy
54429	21	Check if Maroc has gone through the portal in room 81
54450	74	Draw Maroc's shadow and flickering barrier for SHIELD, PROTECT and DEFENCE spells
54524	216	Move and draw the room's foreground scenery items
54740	42	Re-calculate room event table data sets
54782	60	Prepare data for any creatures that are entering Maroc's room
54842	23	Gradual energy drain/restore for Maroc's ongoing effect spells
54865	42	Determine whether a warlock should materialize in the room
54907	41	Prepare a warlock to appear in the room
54948	12	Generate a DEMON in the room in the High Temple of Chaos
54960	23	Initialize the appearance of a warlock or a demon
54983	11	Copy creature, demon or warlock data to room data sets
54994	74	Tunnel section - Generate and prepare tunnel items
55068	20	Tunnel section - Run game timer and randomly generate creatures
55088	100	Tunnel section - Generate a SPIDER or BAT encounter
55188	95	Check for any fired missiles/bolts
55283	64	Check which spell has been cast
55347	127	SERVANT spell - check for retrieval of object from Maroc's backpack
55474	28	Set up active spell-based room event checks
55502	51	HAIL, WAYSTONE, FREEZE, SUMMON or PORTAL spell cast
55553	11	Check/decrement the FREEZE spell timer counter if active
55564	52	Check if Maroc is carrying too many objects
55616	12	Check if Maroc is out of energy
55628	190	Deal with room items when Maroc leaves the room
55818	67	Maroc's room number has changed - identify new room number
55885	59	Maroc is out of energy
55944	64	Game completion - Maroc has destroyed Avelach, Lord of Chaos
56008	20	Object - vertical room position check/adjustment
56028	18	Fetch object state and prepare graphics for printing
56070	25	Generate pseudo-random number using ROM address values
56095	121	Set up missile data and calculate trajectory
56216	93	Draw/erase graphics - screen boundary checks
56309	76	Draw/erase graphics - calculate screen display address position
56385	11	Draw/erase graphics - erase graphic bytes
56396	7	Draw/erase graphics - draw graphic bytes
56403	36	Draw/erase graphics - re-calculate screen display address 1 pixel line down
56439	18	Draw/erase graphics - graphic tile out of bounds
56457	76	Draw/erase graphics - graphic partly out of bounds - RIGHT border of play area
56533	79	Draw/erase graphics - graphic partly out of bounds - LEFT border of play area
56612	56	Draw the spell pointer arrow, spell charge icons and energy bar on the scroll
56668	34	Print the active spell's message text
56702	35	Set length of Maroc's energy bar based on his current energy level
56737	171	Draw/erase foreground scenery items
56908	51	Identify objects for current room
56959	56	Identify state of object in current room
57015	66	Create data set for interactable room object and copy item/graphic data into it
57081	58	Clear the scroll status panel at the bottom of the screen
57139	137	Print spell names on the scroll
57276	17	Calculate servant/icon cursor graphic horizontal/vertical direction & speed
57293	108	Check for events/collisions
57401	119	Check if Maroc or room item is within room boundaries
57520	18	Copy room item data from item buffer to room data sets
57538	51	Setup game graphics
57589	117	Create flipped/mirrored version of a particular graphic
57706	109	Set up data for creature/warlock appearing in Maroc's room
57815	48	Play (generic) sound effect
57863	25	Set screen colour for current room
57888	59	Set attribute colours for Maroc
57947	43	Clear the playing area (pixels)
57990	42	Collision check between creature missile and Maroc's shielding barrier
58032	32	Copy room item event data into working buffer
58064	42	Set up message text on scroll to print
58106	60	Character/text printing
58166	150	Handle creature/graphic animation
58316	49	Increase/decrease Maroc's energy and play short beep sound
58365	111	Print screen colours for room object/creature
58476	123	Animation routine for when Maroc is out of energy
58599	165	Calculate and print Maroc's rank
58764	25	Clear the spell message text area on the scroll
58789	17	Identify address of message text
58806	72	Play music
58878	18	Generate sound effect when Maroc picks up a scroll/spell/item
58896	49	Intro sequence - toggle sky colour between blue/yellow
58945	88	Main loop - handle spell menu and keyboard/joystick inputs
59033	97	UP/DOWN controls pressed while in spell menu
59130	89	Draw active spell charges and icon on scroll
59219	43	Write active spell message on scroll and draw energy bar
59262	36	Check for UP/DOWN and FIRE control presses after a spell is selected
59298	32	Player has cast a spell
59330	43	Print name of ongoing effect spell in small scroll in bottom right of screen
59373	16	Set FLASHing attributes for the spell icon in the top right of the scroll
59389	85	Check which spell is being cast
59474	14	Check horizontal movement direction & speed (MOVE spell)
59488	32	Increase Maroc's horizonal movement speed
59520	21	Decrease Maroc's horizontal movement speed
59541	11	Check vertical movement direction & speed (MOVE spell)
59552	32	Increase Maroc's vertical movement speed
59584	21	Decrease Maroc's vertical movement speed
59605	25	Set Maroc's speed to zero if FIRE pressed while he is moving
59630	59	MOVE spell continued - set viewport scenery speed/movement based on Maroc's
59689	47	Player has cast a spell requiring a controllable cursor (e.g. SERVANT, MISSILE, OPEN)
59736	47	Calculate change to servant/cursor icon horizontal screen position
59783	86	Calculate change to servant/cursor icon vertical screen position
59869	64	Check if FIRE pressed when servant or controllable spell cursor is on screen
59933	23	Spell selected that is the same as the active 'effect' spell (e.g. SHIELD, UNSEEN)
59956	109	Deactivate the currently active effect spell
61946	28	Code sheet - get the code that the player needs to enter
61982	66	Code sheet - hash/randomize the security code co-ordinates required for input
62056	12	Code sheet - print code message/character on screen
62068	21	Code sheet - pick a reference co-ordinate for the code that the player has to enter
62089	13	Code sheet - generate 3 random bytes using the FRAMES timer system variable
62102	99	Code sheet - initialize and print security code to enter
62201	82	Code sheet - set up and evaluate player code input
62283	5	Code sheet - set random number seed to generate the random code location address
62288	73	Code sheet - code entry count and validation
65000	60	Unencrypt all LOADed game data