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