Dragon Quest III (SNES)/RAM map

The following article is a RAM map for Dragon Quest III (SNES).

Main

Category	Address	Size	Description
Stats	$7e3696	long	???? Current amount of Gold
...	$7e3699-$7e3724	140 bytes	...
Bag	$7e3725-$7e3824	256 bytes	???? Each byte is which item is in bag slot, 0 means empty, game uses values $01-$e4
Bag	$7e3825-$7e3924	256 bytes	???? Each byte is amount of the item in the bag slot, game allows up to 99
Stats	$7e3925-$7e3960	$3c bytes	Hero's status and information (data structure)
Stats	$7e3961-$7e399c	$3c bytes	Party member #2's status and information (data structure)
Stats	$7e399d-$7e39d8	$3c bytes	Party member #3's status and information (data structure)
Stats	$7e39d9-$7e3a14	$3c bytes	Party member #4's status and information (data structure)
Stats	$7e3a15-$7e3a50	$3c bytes	Party member #5's status and information (data structure)
Stats	$7e3a51-$7e3a8c	$3c bytes	Party member #6's status and information (data structure)
Stats	$7e3a8d-$7e3ac8	$3c bytes	Party member #7's status and information (data structure)
Stats	$7e3ac9-$7e3b04	$3c bytes	Party member #8's status and information (data structure)
Stats	$7e3b05-$7e3b40	$3c bytes	Party member #9's status and information (data structure)
Stats	$7e3b41-$7e3b7c	$3c bytes	Party member #10's status and information (data structure)
Stats	$7e3b7d-$7e3bb8	$3c bytes	Party member #11's status and information (data structure)
Stats	$7e3bb9-$7e3bf4	$3c bytes	Party member #12's status and information (data structure)
Stats	$7e3bf5-$7e3c30	$3c bytes	Party member #13's status and information (data structure)
Stats	$7e3c31-$7e3c6c	$3c bytes	Party member #14's status and information (data structure)
Stats	$7e3c6d-$7e3ca8	$3c bytes	Party member #15's status and information (data structure)
Stats	$7e3ca9-$7e3ce4	$3c bytes	Party member #16's status and information (data structure)
Stats	$7e3ce5-$7e3d20	$3c bytes	Party member #17's status and information (data structure)
Stats	$7e3d21-$7e3d5c	$3c bytes	Party member #18's status and information (data structure)
Stats	$7e3d5d-$7e3d98	$3c bytes	Party member #19's status and information (data structure)
Stats	$7e3d99-$7e3dd4	$3c bytes	Party member #20's status and information (data structure)
...	$7e3dd5-$---	---	...
Joypad	$7e7ff8-$7e7ff9	word	???? Joypad Buttons - registers $4218 and $4219 are read and stored here

VBLANK State Machine

The whole graphics state is set every VBLANK interrupt. This is also where VRAM DMA transfers are scheduled.

Several bytes are skipped because they are read/written in 16bit mode while the actual value is 8bit and are always $00.

Category	Address	Size	Description
...
Graphics Settings	$7e7f8a	byte	$2101 - ????️ OAM object size and object base
...	$7e7f8b	byte	Skip!
Graphics Settings	$7e7f8c	byte	$2105 - ????️ BG mode and BG character size
...	$7e7f8d	byte	Skip!
Graphics Settings	$7e7f8e	byte	$2106 - ????️ Mosaic size and mosaic enable
...	$7e7f8f	byte	Skip!
Graphics Settings	$7e7f90	byte	$2107 - ????️ BG 1 screen base and screen size
...	$7e7f91	byte	Skip!
Graphics Settings	$7e7f92	byte	$2108 - ????️ BG 2 screen base and screen size
...	$7e7f93	byte	Skip!
Graphics Settings	$7e7f94	byte	$2109 - ????️ BG 3 screen base and screen size
...	$7e7f95	byte	Skip!
Graphics Settings	$7e7f96	byte	$210a - ????️ BG 4 screen base and screen size
...	$7e7f97	byte	Skip!
Graphics Settings	$7e7f98	byte	$210b - ????️ BG 1 & 2 tile base addresses
...	$7e7f99	byte	Skip!
Graphics Settings	$7e7f9a	byte	$210c - ????️ BG 3 & 4 tile base addresses
...	$7e7f9b - $7e...	$ bytes	...
Graphics Settings	$7e7fac	byte	$211a - ????️ Mode 7 Settings Register
...	$7e7fad	byte	Skip!
Graphics Settings	$7e7fae - $7e7faf	word	$211b - ????️ Mode 7 Matrix Registers - A
Graphics Settings	$7e7fb0 - $7e7fb1	word	$211c - ????️ Mode 7 Matrix Registers - B
Graphics Settings	$7e7fb2 - $7e7fb3	word	$211d - ????️ Mode 7 Matrix Registers - C
Graphics Settings	$7e7fb4 - $7e7fb5	word	$211e - ????️ Mode 7 Matrix Registers - D
Graphics Settings	$7e7fb6 - $7e7fb7	word	$211f - ????️ Mode 7 Matrix Registers - X
Graphics Settings	$7e7fb8 - $7e7fb9	word	$2120 - ????️ Mode 7 Matrix Registers - Y
Graphics Settings	$7e7fba	byte	$2123 - ????️ Window mask setting, BG 1 & 2
...	$7e7fbb	byte	Skip!
Graphics Settings	$7e7fbc	byte	$2124 - ????️ Window mask setting, BG 3 & 4
...	$7e7fbd	byte	Skip!
Graphics Settings	$7e7fbe	byte	$2125 - ????️ Window mask setting, OBJ
...	$7e7fbf	byte	Skip!
Graphics Settings	$7e7fc0	byte	$2126 - ????️ Window 1 left position
Graphics Settings	$7e7fc1	byte	$2127 - ????️ Window 1 right position
Graphics Settings	$7e7fc2	byte	$2128 - ????️ Window 2 left position
Graphics Settings	$7e7fc3	byte	$2129 - ????️ Window 2 right position
Graphics Settings	$7e7fc4	byte	$212a - ????️ Window 1/2 mask logic, BG 1-4
...	$7e7fc5	byte	Skip!
Graphics Settings	$7e7fc6	byte	$212b - ????️ Window 1/2 mask logic, MATH and OBJ
...	$7e7fc7	byte	Skip!
Graphics Settings	$7e7fc8	byte	$212c - ????️ Main screen designation
...	$7e7fc9	byte	Skip!
Graphics Settings	$7e7fca	byte	$212d - ????️ Sub screen designation
...	$7e7fcb	byte	Skip!
Graphics Settings	$7e7fcc	byte	$212e - ????️ Window area main screen disable
...	$7e7fcd	byte	Skip!
Graphics Settings	$7e7fce	byte	$212f - ????️ Window area sub screen disable
...	$7e7fcf	byte	Skip!
Graphics Settings	$7e7fd0	byte	$2130 - ???? Color math control A
...	$7e7fd1	byte	Skip!
Graphics Settings	$7e7fd2	byte	$2131 - ???? Color math control B
...	$7e7fd3	byte	Skip!
Graphics Settings	$7e7fd4	word	$2132 - ???? Color math sub screen backdrop color, RGB intensities stored as 0bbbbbgggggrrrrr
...
Graphics Settings	$7e7fda	byte	$2133 - ????️ Screen mode/video select
...
Graphics Loading	$7e7ffe - $7e81fd	$200 bytes	???? CGRAM mirror, palettes/colors
...
Graphics Loading	$7e8bae - $7e8dad	$100 words	$4302 - ↔️ DMA source addresses
Graphics Loading	$7e8dae - $7e8fad	$100 words but only uses low byte	$4304 - ↔️ DMA source address banks
Graphics Loading	$7e8fae - $7e91ad	$100 words	$2116 - ↔️ VRAM destination addresses
Graphics Loading	$7e91ae - $7e93ad	$100 words	$4305 - ↔️ DMA transfer sizes
Graphics Loading	$7e93ae	byte	↔️ Number of DMA transfers to perform (indexes the preceding arrays)
...
Graphics Loading	$7edb1f - $7edd3e	$220 bytes	???? OAM - Sprite data
...
Graphics Loading	$7faeea - $7fb0e9	$100 words	↔️ Tile indexes, which tiles to copy, used to fill the DMA copy scheduler data in $7e8bae - $7e93ae
...

Structures

[TODO: Change the name, add a description]

Party Members

The main data structure starts at $7e3925. Each entry is $3c bytes long.

Details can be found in the Party Members subpage.

Game Event Flags

Events

Dragon Quest III (SNES)/RAM map/Events

Treasures

Dragon Quest III (SNES)/RAM map/Treasures

Return Spell List

There are 5 bytes checked in the list, but only 3 are used and the last 2 bytes are gltchy.

Category	Address	SRAM	Value	Destination
Return Spell	$03680	---	0000 0001	Aliahan
Return Spell	$03680	---	0000 0010	Reeve
Return Spell	$03680	---	0000 0100	Romaly
Return Spell	$03680	---	0000 1000	Kazave
Return Spell	$03680	---	0001 0000	Noaniels
Return Spell	$03680	---	0010 0000	Ashalam
Return Spell	$03680	---	0100 0000	Isis
Return Spell	$03680	---	1000 0000	Portoga
Return Spell	$03681	---	0000 0001	Baharata
Return Spell	$03681	---	0000 0010	Dharma
Return Spell	$03681	---	0000 0100	Lancel
Return Spell	$03681	---	0000 1000	Zipangu
Return Spell	$03681	---	0001 0000	Edinbear
Return Spell	$03681	---	0010 0000	Samanosa
Return Spell	$03681	---	0100 0000	???
Return Spell	$03681	---	1000 0000	Zenithia
Return Spell	$03682	---	0000 0001	Ludatorm
Return Spell	$03682	---	0000 0010	Domdora
Return Spell	$03682	---	0000 0100	Mercado
Return Spell	$03682	---	0000 1000	Kol
Return Spell	$03682	---	0001 0000	Rimuldar
Return Spell	$03682	---	0010 0000	X-Burg
Return Spell	$03682	---	0100 0000
Return Spell	$03682	---	1000 0000
Return Spell	$03683	---	0000 0001
Return Spell	$03683	---	0000 0010
Return Spell	$03683	---	0000 0100
Return Spell	$03683	---	0000 1000
Return Spell	$03683	---	0001 0000
Return Spell	$03683	---	0010 0000
Return Spell	$03683	---	0100 0000
Return Spell	$03683	---	1000 0000
Return Spell	$03684	---	0000 0001
Return Spell	$03684	---	0000 0010
Return Spell	$03684	---	0000 0100
Return Spell	$03684	---	0000 1000
Return Spell	$03684	---	0001 0000
Return Spell	$03684	---	0010 0000
Return Spell	$03684	---	0100 0000
Return Spell	$03684	---	1000 0000

Sub Pages

Party Members

Events

Treasures