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Mega Man 3 (NES)/RAM map
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The following article is a RAM map for Mega Man 3 (NES).
Sprite/Object Arrays
| RAM | Function | Details |
| $300-$31F | Object ID | |
| $318-$32F | X Coordinate Ratio Counter | ######## |
| $360-$37F | X Coordinate | |
| $380-$39F | X Screen (Level Screen) | |
| $3C0-$3DF | Y Coordinate Ratio Counter | ###### |
| $3C0-$3DF | Y Coordinate | |
| $3E0-$3FF | Y Screen | |
| $3A8-$3BF | Horizontal Speed Low | ###### |
| $3C0-$3D7 | Horizontal Speed High | ######## |
| $440-$45F | Vertical Speed Low | |
| $460-$47F | Vertical Speed High | |
| $408-$41F | Substance and Shape | ########### |
| $420-$437 | Direction Bits | ####### |
| $438-$44F | Enemy Number# in Level | ### |
| $4E0-$4FF | Enemy HP | |
| $500-$51F | Object ASM Private Memory 1 | |
| $480-$497 | Object ASM Private Memory 2 | #### |
| $498-$4AF | Object ASM Private Memory 3 | ### |
| $4B0-$4C7 | Object ASM Private Memory 4 | ### |
| $4C8-$4DF | Object ASM Private Memory 5 | ### |
| $4E0-$4F7 | Object ASM Private Memory 6 | ### |
| $4F8-$50F | Object ASM Private Memory 7 | ### |
| $510-$527 | Object ASM Private Memory 8 | ## |
| $528-$53F | Sprite Flags | #### |
| $5A0-$5BF | Sprite's Animation | |
| $5C0-$5DF | Sprite ID | |
| $5E0-$5FF | Animation Frame Counter | |
| $588-$59F | ASM - Low Address | #### |
| $5A0-$5B7 | ASM - High Address | ##### |
| $5B8-$5CF | Invincibility Blink / Freeze Action Status | ##### |
| $5D0-$5FF | Never used in entire game | ##### |
Player Variables
Life & Health
| RAM | Function | Details |
| $00A2 | Current HP | |
| $00AE | Lives Remaining | |
| $00AF | Energy Tanks Remaining |
Weapons
| RAM | Function |
| $00A3 | Gemini Beam |
| $00A4 | Needle Cannon |
| $00A5 | Hard Knuckle |
| $00A6 | Magnet Missile |
| $00A7 | Top Spin |
| $00A8 | Search Snake |
| $00AA | Spark Shock |
| $00AC | Shadow Blade |
| Hex value | Description |
| 00 | Don't have weapon |
| 9C | Have weapon |
Rush Equipment
| RAM | Function | Details |
| $00A9 | Rush Coil | |
| $00AB | Rush Marine | |
| $00AD | Rush Jet |
Miscellaneous Variables
Stages
| RAM | Function | Details |
| $0022 | Current Stage | 00 - Needle Man 01 - Magnet Man 02 - Gemini Man 03 - Hard Man 04 - Top Man 05 - Snake Man 06 - Spark Man 07 - Shadow Man 08 - Needle Man 2 09 - Gemini Man 2 0A - Spark Man 2 0B - Shadow Man 2 0C - Wily Castle 1 0D - Wily Castle 2 0E - Wily Castle 3 0F - Wily Castle 4 10 - Wily Castle 5 11 - Wily Castle 6 14 - Ending scene 16 - Dr. Light's Lab |
| $006E | Wily Stage 4 Boss Rematches | 00 - No bosses defeated 01 - Needle Man defeated 02 - Magnet Man defeated 04 - Gemini Man defeated 08 - Hard Man defeated 10 - Top Man defeated 20 - Snake Man defeated 40 - Spark Man defeated 80 - Shadow Man defeated |
$00DC - $0DE4 Music