Mega Man 2/RAM map

The following article is a RAM map for Mega Man 2.

Misc.

• $0022 - Vertical position of screen scrolling
• $0023 - Controller 1 Poll
• $0025 - Controller 1 Mirror
• $0027 - Controller 1 Poll, only changes on first frame of state change. Crash Man checks this for jump code.
  • Bit 1: A
  • Bit 2: B
  • Bit 3: Select
  • Bit 4: Start
  • Bit 5: Up
  • Bit 6: Down
  • Bit 7: Left
  • Bit 8: Right
• $002A - Area selected
• $0030 - Gravity.
• $004B - Invincibility timer (when this is above $00, invincibility frames will start and this will count down at a rate of $01 per frame).

Sound

• $0066 - Sound effects for $0580 : $01 - play
• $0067 - Music playing for $0000 : $01 - play
• $0580 - Sound to play for $0066

Stats

• $06C0 - Mega Man's HP

• $009A - Unlocked Weapons

0000 0001 = $80 = 128 - Atomic Fire (Heatman)
0000 0010 = $40 =  64 - Air Shooter (Airman)
0000 0100 = $20 =  32 - Leaf Shield (Woodman)
0000 1000 = $10 =  16 - Bubble Lead (Bubbleman)
0001 0000 = $08 =   8 - Quick Boomerang (Quickman)
0010 0000 = $04 =   4 - Time Stopper (Flashman)
0100 0000 = $02 =   2 - Metal Blade (Metalman)
1000 0000 = $01 =   1 - Crash Bomb (Crashman)

• $009B - Item #s

0000 0001 = $80 = 128 - Item 1 (Floating Platform)
0000 0010 = $40 =  64 - Item 2 (Horizontal Platform)
0000 0100 = $20 =  32 - Item 3 (Vertical Platform)

• $009C - Number of times Atomic Fire (Heatman) can be used
• $009D - Number of times Air Shooter (Airman) can be used
• $009E - Number of times Leaf Shield (Woodman) can be used
• $009F - Number of times Bubble Lead (Bubbleman) can be used
• $00A0 - Number of times Quick Boomerang (Quickman) can be used
• $00A1 - Number of times Time Stopper (Flashman) can be used
• $00A2 - Number of times Metal Blade (Metalman) can be used
• $00A3 - Number of times Crash Bomb (Crashman) can be used
• $00A4 - Number of times Item 1 can be used
• $00A5 - Number of times Item 2 can be used
• $00A6 - Number of times Item 3 can be used
• $00A7 - Number of Energy Tanks Remaining
• $00A8 - Number of Lives remaining
• $00CB - Difficulty setting

Graphics Set Stuff

• $003A - A background-related boolean? (Changes to the rhythm of the flashing clouds of Airman's stage)
• $00F7 - Graphics Set
• $0200 - Y location of Heatman's left eye
• $0201 - Graphic for Heatman's left eye
• $0202 - Palette for Heatman's left eye
• $0203 - X location of Heatman's left eye
• $0204 - Y location of Heatman's right eye
• $0205 - Graphic for Heatman's right eye
• $0206 - Palette for Heatman's right eye
• $0207 - X location of Heatman's right eye
• $0367-0369 - Megaman's Color Palette

Sprite stuff

• $049F - Enemy 1's speed to the left
• $0460 - Mega Man's X location
• $04A0 - Mega Man's Y location
• $0033 - Is Mega Man on land
• $003D - Is Mega Man shooting
• $0036 - Shot timer
• $04A2 - Windows' Y position on Title Screen
• $04A3 - Side of building's Y position on Title Screen
• $04B0 - Mega Man's Y position on Title Screen
• $04BF - Enemy 1's Y location

Password Stuff

• $0420 - $0438 - If 01, this grid space contains a dot.
• $0680 - Number of dots left on Password entering
• $06A0 - Position of cursor on Password entering