Mega Man: Dr. Wily's Revenge/ROM map

The following article is a ROM map for Mega Man: Dr. Wily's Revenge.

Bank 0: Unknown

• 0x 0000- 3978 ???
• 420- 5BF Alphabet gfx??
• 857-85B Put initial Weapon in RAM Address: DFA1

00:0857	3E 01		ld a,$01	(a=$01=Initial Weapon="P")
00:0859	EA A1 DF	ld [$DFA1],a	(Put the value $01="P" in $DFA1=Weapon)

• B26-B2A Put initial Energy value in RAM Address: DFA3

00:0B26	3D 98		ld a,$98	(a=$98=Initial energy)
00:0B28	EA A3 DF	ld [$DFA3],a	(Put the value $98 in $DFA3=Energy)

• BCA-BCF Decrease lives

00:0BCA	21 08 C1	ld hl,$C108	(Load in hl the Address $C108=Lives)
00:0BCD	34		dec [hl]	(Decrease the value into the Address $C108=Lives)
00:0BCE	28 23		jr z,$0BF3	(Jump if is zero to the Address 00:0BF3)

Note:
If you change the instruction in 00:0BC4 you can have infinite lives.
00:0BCD 00              nop             (NOt Operation)

The value of lives don´t decrease.

• CCE-CD2 Put initial lives of the game

00:0CCE	3E 03		ld a,$03	(a=$03=Initial lives of the game)
00:0CD0	EA 08 C1	ld [$C108],a	(Put the value $03 in the Addres $C108=Lives)

Notes:
You can have mor lives if you change the instruction in 00:0CCE.
For example:
00:0CCE 3E 09           ld a,$09
The initial value of lives is 9. You have more lives.

• 157F-15B8: Joypad subroutine
• 15D4-15E1: Put OAM DMA Transfer subroutine in internal RAM: $FF80-$FF89

00:15D4	0E 80		ld c,$80	(c=$80)
00:15D6	06 0A		ld b,$0A	(b=$0A=10=Size of OAM DMA Transfer Subroutine)
00:15D8	21 E2 15	ld hl,$15E2	(Put in hl the address $00:15E2 where is the OAM DMA Transfer subroutine in ROM)
00:15DB	2A		ldi a,[hl]	(Put in A the value in address given in hl=Subroutine OAM DMA Transfer in ROM and increases hl)
00:15DC	E2		ld [$FF00+c],a	(Put the value of A in the Address $FF00+c=Internal RAM)
00:15DD	0C		inc c		(Increases c)
00:15DE	05		dec b		(Decrease b=Bytes to be written in Internal RAM of the OAM DMA Transfer Subroutine)
00:15DF	20 FA		jr nz,$15DB	(If not zero then jump to address $00:15DB to write other byte of the subroutine in the internal RAM)
00:15E1	C9		ret		(Return of the subroutine)

• 15E2-15EB: OAM DMA Tranfer subrotuine
• 20E1-2108: Name enemies
• 0x 3979- 3FFF Unused

Bank 1: Unknown

• 0x 4000-5765 ???
• 0x 5766-5772: Increases the lives

01:5766	21 08 C1	ld hl,$C108	(Put in hl the address $C108=Lives)
01:5769	7E		ld a,[hl]	(Put in A the value in address $C108=Lives)
01:576A	3C		inc a		(Increases a)
01:576B	FE 0A		cp a,$0A	(Compare the value of A=Lives with $0A=10 decimal=Maximum value of lives?)
01:576D	38 02		jr c,$5771	(Jump if carry to address $01:5771)
01:576F	3E 0A		ld a,$0A	(Put in A the value $0A=10 decimal)
01:5771	77		ld [hl],a	(Put the value $0A=10 decimal in the address $C108=Lives)
01:5772	C9		ret		(Return of the subroutine)

• 0x 5773-615F: Put data of triangle tile that represents the menu icon:

01:6160	1E 60		ld e,$60	(Put in E the value $60=Y coordinate for choice "GAME START")
01:6162	28 02		jr z,$6166	(Jump if is zero to address $01:6166)
01:6164	1E 68		ld e,$68	(Put in E the value $68=Y coordinate for choice "PASS WORD")
01:6166	21 00 C0	ld hl,$C000	(Put in hl the Addres $C000=RAM=Y Coordinate=Copy of OAM)
01:6169	73		ld [hl],e	(Put the value $68 in the address in hl=$C000=Coordinate Y)
01:616A	2C		inc l		(Increases l=$00+$01=$01. hl=$C001)
01:616B	36 30		ld [hl],$30	(Put the value $30 in the address in hl=$C001=Coordinate X)
01:616D	2C		inc l		(Increases l=$01+$01=$02. hl=$C002)
01:616E	36 00		ld [hl],$00	(Put the value $00=Triangle tile that represents the menu icon in the address $C002)
01:6170	2C		inc l		(Increases l=$02+$01=$03. hl=$C003)
01:6171	36 00		ld [hl],$00	(Put the value $00 in the address $C003=Attribute of the tile)
01:6173	C9		ret		(Return of the subroutine)

Note:
Each tile needs 4 bytes: Y-coord (1 byte), X-coord (1 byte), Tile (1 byte), Attribute (1 byte)

• 0x 6174-6528 ???
• 0x6529-6548: X and Y coordinates of points in the box at the level selection screen

CUTEMAN:
01:6529	18 18	(Y-loc, X-loc) -> Upper left corner
01:652B	18 40	(Y-loc, X-loc) -> Top right corner
01:652D	40 18	(Y-loc, X-loc) -> Lower left corner
01:652F	40 40	(Y-loc, X-loc) -> Lower right corner
ICEMAN:
01:6531	18 68	(Y-loc, X-loc) -> Upper left corner
01:6533	18 90	(Y-loc, X-loc) -> Top right corner
01:6535	40 68	(Y-loc, X-loc) -> Lower left corner
01:6537	40 90	(Y-loc, X-loc) -> Lower right corner
ELECMAN:
01:6539	68 18	(Y-loc, X-loc) -> Upper left corner
01:653B	68 40	(Y-loc, X-loc) -> Top right corner
01:653D	90 18	(Y-loc, X-loc) -> Lower left corner
01:653F	90 40	(Y-loc, X-loc) -> Lower right corner
FIREMAN:
01:6541	68 68	(Y-loc, X-loc) -> Upper left corner
01:6543	68 90	(Y-loc, X-loc) -> Top right corner
01:6545	90 68	(Y-loc, X-loc) -> Lower left corner
01:6547	90 90	(Y-loc, X-loc) -> Lower right corner

• 0x6549-73AA ???
• 0x73AB-7FFF Unused

Bank 2: Unknown (Music?)

• 0x 8000- BCA1
• 0x BCA2- BFFF Unused

Bank 3: Unknown

• 0x C000- FBE4 ???
• 0x FBE5- FFFF Unused

Bank 4: Main Sprite Graphics

• 10060-123FF Graphics (Mega Man, Status Bar, Enemies)
• 0x12FE0-13FFF Unused

Bank 5: Robot Master Level Data

• 0x14000-14007 - Pointer List
  • 0x14008-1492E - Cut Man
  • 0x1492F-15259 - Ice Man
  • 0x1525A-15F71 - Fire Man
  • 0x15F72-16AAC - Elec Man
  • 0x16AAD-17FFF - Unused
• 0x17000-17FFF Unused

Bank 6: Static Screen Data

• 0x18000-1BBB6 ??? GFX: Static Screen Data
  • 0x1803C-18148 - Menu texts
  • 0x1814B-18226 - Title screen data
• 0x1BBB7-1BFFF Unused

Bank 7: Robot Master Graphics

• 0x1C000-1F812 ??? Boss GFX (Cu,Ic,El,Fi,En,Bu,Fl,He,Qu,Wily)
• 0x1F813-20000 Unused

Bank 8: Wily 1 Data

• 0x20001-23828 Wily 1 Level Data?
  • 0x2134A-21809 Teleporter area gfx
• 0x23829-23FFF Unused

Bank 9: Unknown

• 0x24000-27D31 ???
• 0x27D32-27FFF Unused

Bank A: Unknown

• 0x28000-2B20C ???
• 0x2B20D-2BFFF Unused

Bank B: Unknown

• 0x2C000-2D5CF ???
• 0x2D5D0-2FFFF Unused

Bank C: Level Graphics

• 0x30000-33395 Level GFX
• 0x33396-33FFF Unused

Bank D: Unknown

• 0x34000-36310 ???
• 0x36311-37FFF Unused

Bank E: Ending Data

• 0x38000-3BBAF ???
  • ~39000 Ending GFX
• 0x3BBB0-3BFFF Unused

Bank F: Unused

• 0x3C000-3FFFF Unused