Memory map

Page	Byte	Address	Description
92	0	23552	Attribute buffer (room + Willy + entities + items)
94	0	24064	Attribute buffer (empty room)
96	0	24576	Screen buffer (room + Willy + entities + items)
112	0	28672	Screen buffer (empty room)
128	0	32768	Room layout
128	128	32896	Room name
128	160	32928	Room tiles
128	214	32982	Conveyor definition
128	218	32986	Ramp definition
128	222	32990	Border colour
128	223	32991	Unused
128	225	32993	Item graphic
128	233	33001	Room exits
128	237	33005	Unused
128	240	33008	Entity specifications
129	0	33024	Entity buffers
129	65	33089	Unused
130	0	33280	Screen buffer address lookup table
131	0	33536	Rope animation table
132	0	33792	The game has just loaded
132	32	33824	Current room number
132	33	33825	Left-right movement table
132	49	33841	Triangle UDGs
132	81	33873	'AIR'
132	84	33876	'+++++ Press ENTER to Start +++++...'
133	84	34132	'Items collected 000 Time 00:00 m'
133	116	34164	'Game'
133	120	34168	'Over'
133	124	34172	Number of items collected
133	127	34175	Current time
133	133	34181	' 7:00a'
133	139	34187	'Enter Code at grid location     '
133	171	34219	'Sorry, try code at location     '
133	203	34251	Minute counter
133	204	34252	Lives remaining
133	205	34253	Screen flash counter
133	206	34254	Kempston joystick indicator
133	207	34255	Willy's y-coordinate
133	208	34256	Willy's direction and movement flags
133	209	34257	Airborne status indicator
133	210	34258	Willy's animation frame
133	211	34259	Address of Willy's location in the attribute buffer at 23552
133	213	34261	Jumping animation counter
133	214	34262	Rope status indicator
133	215	34263	Willy's state on entry to the room
133	222	34270	256 minus the number of items remaining
133	223	34271	Game mode indicator
133	224	34272	Inactivity timer
133	225	34273	In-game music note index
133	226	34274	Music flags
133	227	34275	WRITETYPER key counter
133	228	34276	Temporary variable
133	229	34277	WRITETYPER
133	251	34299	Title screen tune data (Moonlight Sonata)
134	95	34399	In-game tune data (If I Were a Rich Man)
134	159	34463	Give two chances to enter a correct code
134	195	34499	Display the code entry screen
135	60	34620	Read the keyboard during code entry
135	202	34762	Display the title screen and play the theme tune
136	252	35068	Start the game
137	18	35090	Initialise the current room
137	139	35211	Draw the remaining lives
137	173	35245	Main loop (1)
138	235	35563	Cycle the INK and PAPER colours
139	7	35591	Main loop (2)
140	1	35841	Lose a life
140	74	35914	Display the game over sequence
141	51	36147	Draw the current room to the screen buffer at 28672
141	107	36203	Fill the buffer at 24064 with attribute bytes for the current room
141	192	36288	Copy a room attribute byte into the buffer at 24064
141	211	36307	Move Willy (1)
142	212	36564	Move Willy (2)
143	188	36796	Move Willy (3)
144	182	37046	Kill Willy
144	192	37056	Move the rope and guardians in the current room
145	190	37310	Draw the rope, arrows and guardians in the current room
147	187	37819	Unused routine
147	209	37841	Draw the items in the current room and collect any that Willy is touching
148	86	37974	Draw a sprite
148	138	38026	Move Willy into the room to the left
148	158	38046	Move Willy into the room to the right
148	176	38064	Move Willy into the room above
148	210	38098	Move Willy into the room below
148	249	38137	Move the conveyor in the current room
149	52	38196	Deal with special rooms (Master Bedroom, The Bathroom)
149	132	38276	Check whether Willy has reached the toilet
149	154	38298	Animate the toilet in The Bathroom
149	200	38344	Check and set the attribute bytes for Willy's sprite in the buffer at 23552
150	30	38430	Check and set the attribute byte for a cell occupied by Willy's sprite
150	55	38455	Draw Willy to the screen buffer at 24576
150	128	38528	Print a message
150	145	38545	Print a single character
150	162	38562	Play the theme tune (Moonlight Sonata)
150	201	38601	Check whether ENTER, 0 or the fire button is being pressed
150	222	38622	Play an intro message sound effect
150	244	38644	Unused routine
151	24	38680	Unused
152	0	38912	Attributes for the top two-thirds of the title screen
154	0	39424	Attributes for the bottom third of the screen
155	0	39680	Number key graphics
155	128	39808	Attributes for the code entry screen
156	0	39936	Source code remnants
156	64	40000	Foot/barrel graphic data
156	128	40064	Maria sprite graphic data
157	0	40192	Willy sprite graphic data
158	0	40448	Codes
158	179	40627	Unused
160	0	40960	Entity definitions
163	255	41983	Index of the first item
164	0	41984	Item table
166	0	42496	Toilet graphics
166	128	42624	Unused
171	0	43776	Guardian graphics
192	0	49152	Room 0: The Off Licence (teleport: 9)
193	0	49408	Room 1: The Bridge (teleport: 19)
194	0	49664	Room 2: Under the MegaTree (teleport: 29)
195	0	49920	Room 3: At the Foot of the MegaTree (teleport: 129)
196	0	50176	Room 4: The Drive (teleport: 39)
197	0	50432	Room 5: The Security Guard (teleport: 139)
198	0	50688	Room 6: Entrance to Hades (teleport: 239)
199	0	50944	Room 7: Cuckoo's Nest (teleport: 1239)
200	0	51200	Room 8: Inside the MegaTrunk (teleport: 49)
201	0	51456	Room 9: On a Branch Over the Drive (teleport: 149)
202	0	51712	Room 10: The Front Door (teleport: 249)
203	0	51968	Room 11: The Hall (teleport: 1249)
204	0	52224	Room 12: Tree Top (teleport: 349)
205	0	52480	Room 13: Out on a limb (teleport: 1349)
206	0	52736	Room 14: Rescue Esmerelda (teleport: 2349)
207	0	52992	Room 15: I'm sure I've seen this before.. (teleport: 12349)
208	0	53248	Room 16: We must perform a Quirkafleeg (teleport: 59)
209	0	53504	Room 17: Up on the Battlements (teleport: 159)
210	0	53760	Room 18: On the Roof (teleport: 259)
211	0	54016	Room 19: The Forgotten Abbey (teleport: 1259)
212	0	54272	Room 20: Ballroom East (teleport: 359)
213	0	54528	Room 21: Ballroom West (teleport: 1359)
214	0	54784	Room 22: To the Kitchens    Main Stairway (teleport: 2359)
215	0	55040	Room 23: The Kitchen (teleport: 12359)
216	0	55296	Room 24: West of Kitchen (teleport: 459)
217	0	55552	Room 25: Cold Store (teleport: 1459)
218	0	55808	Room 26: East Wall Base (teleport: 2459)
219	0	56064	Room 27: The Chapel (teleport: 12459)
220	0	56320	Room 28: First Landing (teleport: 3459)
221	0	56576	Room 29: The Nightmare Room (teleport: 13459)
222	0	56832	Room 30: The Banyan Tree (teleport: 23459)
223	0	57088	Room 31: Swimming Pool (teleport: 123459)
224	0	57344	Room 32: Halfway up the East Wall (teleport: 69)
225	0	57600	Room 33: The Bathroom (teleport: 169)
226	0	57856	Room 34: Top Landing (teleport: 269)
227	0	58112	Room 35: Master Bedroom (teleport: 1269)
228	0	58368	Room 36: A bit of tree (teleport: 369)
229	0	58624	Room 37: Orangery (teleport: 1369)
230	0	58880	Room 38: Priests' Hole (teleport: 2369)
231	0	59136	Room 39: Emergency Generator (teleport: 12369)
232	0	59392	Room 40: Dr Jones will never believe this (teleport: 469)
233	0	59648	Room 41: The Attic (teleport: 1469)
234	0	59904	Room 42: Under the Roof (teleport: 2469)
235	0	60160	Room 43: Conservatory Roof (teleport: 12469)
236	0	60416	Room 44: On top of the house (teleport: 3469)
237	0	60672	Room 45: Under the Drive (teleport: 13469)
238	0	60928	Room 46: Tree Root (teleport: 23469)
239	0	61184	Room 47: [ (teleport: 123469)
240	0	61440	Room 48: Nomen Luni (teleport: 569)
241	0	61696	Room 49: The Wine Cellar (teleport: 1569)
242	0	61952	Room 50: Watch Tower (teleport: 2569)
243	0	62208	Room 51: Tool  Shed (teleport: 12569)
244	0	62464	Room 52: Back Stairway (teleport: 3569)
245	0	62720	Room 53: Back Door (teleport: 13569)
246	0	62976	Room 54: West  Wing (teleport: 23569)
247	0	63232	Room 55: West Bedroom (teleport: 123569)
248	0	63488	Room 56: West Wing Roof (teleport: 4569)
249	0	63744	Room 57: Above the West Bedroom (teleport: 14569)
250	0	64000	Room 58: The Beach (teleport: 24569)
251	0	64256	Room 59: The Yacht (teleport: 124569)
252	0	64512	Room 60: The Bow (teleport: 34569)
253	0	64768	Unused TRS-DOS code