Super Mario Bros./RAM map

The following article is a RAM map for Super Mario Bros..

This data is relevant to Super Mario Bros. (JU) (PRG0) [!] and may not be correct for other dumps.

Table

RAM	Information
0001	Mario's Animation
0002	Y-axis position (for Mario)
0003	Direction Mario's facing
0004	How much to load?
0005	X-axis position (for Mario)
000A	Button state 00 - No button 04 - A 08 - B
000B	Direction-pad state (vertical) 04 - Down 08 - Up
000D	Button state 00 - No button 04 - A 08 - B
000E*	Mario mode 00 - Leftmost of screen 01 - Climbing vine 02 - Entered pipe 03 - Pipe2 04 - Autowalk 05 - Autowalk 06 - Mario dies 08 - Normal 09 - Cannot move 0B - Dying 0C - Pallete Cycling, Can't move
000F*	Enemy mode 00 - Not shown 01 - Shown
0014*	Show sprite (bool)
0016*	Current enemy type 1 00 - Green Koopa 01 - Red Koopa 02 - Black Beetle 03 - Red Koopa 04 - Green Koopa 05 - Hammer Brother 06 - Goomba 07 - Squid 08 - Bullet Bill (low) 09 - Green Koopa Paratroopa 10 - Flying Greek Koopa Paratroopa 11 - Lakitu 12 - Spiked Koopa 13 - Bizzare 14 - Airborne Fish 15 - crashes game 16 - Fire from Bowser 17 - Bullet Bill (high) 18 - gooba 19 - nada 20 - fire thingy 2A - Surfing Lift
0017	Current enemy type 2
0018	Current enemy type 3
0019	Current enemy type 4
0019	Current enemy type 5
001B*	Current power-up 2E - Mushroom/Fire
001D	Indication value for Mario 00 - Standing 01 - Jumping 02 - Falling 03 - Sliding down flagpole
0023	Indication value for power-ups 06+ - Power-up checking routine is run 80 - Power-up on screen
002A*	Coin anim (?)
002B*	Coin anim (?)
002C*	Coin anim (?)
002D*	Coin anim (?)
002E*	Coin anim (?)
002F*	Coin anim (?)
0030*	Coin anim (?)
0031*	Coin anim (?)
0032*	Run 200pts animation or throw hammer (?)
0033*	Facing direction (for Mario) 00 - F1 - Right F2 - FF - Left
0039*	Power-up type on screen 00 - Mushroom 01 - Fire Flower 02 - Starman 03 - 1UP)
0045	Facing direction (for Mario) 01 - Right 02 - Left
0046	Enemy Direction
0047	Enemy Direction
004B	Mushroom Sprite Direction 01 - Right 02 - Left
0057	Horizontal speed (pos/neg)
0058	Enemy speed (pos/neg)
0059	Enemy speed (pos/neg)
005A	Enemy speed (pos/neg)
006D*	Horitonal position (?)
0070	Current page (?)
0071	Current page (?)
0072	Current page (?)
0073	Current page - 1 (?)
0086*	X-axis position (for Mario)
0087*	Current enemy 1 sprite x location
0088*	Current enemy 2 sprite x location
008C*	Current power up sprite x location
009F	Vertical speed
00B5	Appears to be the screen height multiplier (ie [mario's y location at 00CE] * [this byte] = [mario's true y val])
00CE*	Mario sprite y pos
00CF*	Enemy 1 sprite y pos
00D0*	Enemy 2 sprite y pos
00D4*	Power up sprite y pos
03AD	Mario x pos
03AE	Enemy x pos
03B8	Mario vertical pos
03B9	Enemy vertical pos
03C4*	Mario palette #
0400	Horizontal movement counter
0416	Mario vert position
0433	Mario vertical speed
0450	F8 if running
0456	28 if running
0490*	FF normal game play allows horizontal movement
04C4	power up location 1
04C6	power up location 2
06CE	Uses Bit 0 to toggle between the 2 fireballs
06D4	gold color cycle
06D5	Mario state (?) (B8 - small stand, [60, 70, 80] - small walk cycle, C8 - big stand, 20 - big jump, [00, 10, 20] - bigwalk cycle, 50 - crouch)
06FC	buttons pressed
0700	x speed
0701	is skidding
0702	E4 - is running, 30 - skidding, 98 normal
0705	some kind of horizontal movement counter, doesnt count while in air
070B	if true, runs big-small animation (doesnt affect state though)
0714*	04 when crouching
071A	current level room
071B	next level room
071C*	affects marios Horiz pos (on screen only though?)
071D*	affects marios Horiz pos (on screen only though?)
071F	scroll speed?
0743	if true, is cloud level (game sets to $03), can be set mid level
0744	affects background color
0747	timer (?) pauses enemies while set
074A	Buttons pressed
074E	"Gold" block pallette - 00 turns blocks into water world and makes bubble, but no swimming
0752	if not 00 will crash game when level load
0753	affects mario/luigi if set before level load, but prevents movement in level if not 00
0754	if true, is small
0756	Player Power-Up State 0 Small Mario 1 Big Mario 2> Fire Flower Mario Does not alter sprite or color palette (i.e. small Mario fires fireballs)
0757	set to 01 during "prelevel" screen
075A	lives
075E	coins
075F	Current World number minus one. This gets set to 23 when warp glitch in 1-2 takes you to level -1
0770*	game mode (00 - demo, 01 - normal, 02 - End World, 03 - End Game (?) ) (set to 01 at the title screen and you start the game with the title screen showing )
0771
0772*	00 restarts level
0773*	Level palette (00 - normal, 01 - underwater, 02 - night, 03 - underground, 04 - castle)
0774	?? changes on game and level start. crashes game if changed
0775	scroll speed (?)
0776*	is paused (bool)
0777	timer (set when pausing/unpausing
0778*	affects blocks
0779*	affects colors.. most values crash, 1E default, 1F makes it grey scale
077A*	if true, will load luigi when mario dies. you have to unset 0753 to move with luigi though
0780*	timer - (all timers count down from whatever value they are set to)
0781*	timer - fired when fireball shot
0782*	timer - fired when jumping
0783*	timer
0784*	timer
0785*	timer
0786*	timer
0787	??
0788*	timer
0789	??
078A*	timer
078B*	timer
078C*	timer
078D*	timer
078E*	timer
078F*	timer
0790*	timer
0791*	timer
0792*	timer
0793*	timer
0794*	timer
0795*	timer - fired when you fall down a pit
0796*	timer
0797*	timer
0798*	timer
0799*	timer
079A*	timer
079B*	timer
079C*	timer
079D*	timer
079E*	flashing timer (when you get hit and are invincible for a short while)
079F*	starman timer
07A0*	timer - "prelevel" screen timer, fired again when level starts
07A1*	timer
07A2*	timer - counts how long before demo is run on main screen
07A7	?? rapidly changing even when paused
07A8	?? rapidly changing even when paused
07A9	?? rapidly changing even when paused
07AA	?? rapidly changing even when paused
07AB	?? rapidly changing even when paused
07AC	?? rapidly changing even when paused
07AD	?? rapidly changing even when paused
07B1*	if true, you wont "die" after falling or getting hit while small. you will be unable to move at the bottom of the screen though until you set it to 00)
07BD*	timer (?) 10 when mushroom/fireflower block last hit (fired when power up grabbed or coin block hit)
07D7*	high score - 1000000s
07D8*	high score - 100000s
07D9*	high score - 10000s
07DA*	high score - 1000s
07DB*	high score - 100s
07DC*	high score - 10s
07DD*	mario score - 1000000s
07DE*	mario score - 100000s
07DF*	mario score - 10000s
07E0*	mario score - 1000s
07E1*	mario score - 100s
07E2*	mario score - 10s
07E3*	luigi score - 1000000s
07E4*	luigi score - 100000s
07E5*	luigi score - 10000s
07E6*	luigi score - 1000s
07E7*	luigi score - 100s
07E8*	luigi score - 10s
07ED*	coins 10s (on screen only)
07EE*	coins 1s (on screen only)
07F8*	time - 100s
07F9*	time - 10s
07FA*	time - 1s
07FC*	if true, game is harder (set after you beat the game)
17A2	timer for demo start