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Gradius (NES)/RAM map
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The following article is a RAM map for Gradius (NES).
| RAM | Function | Details |
| 0x0007 | Key Pressed | |
| 0x000F | Title screen cursor position | |
| 0x0015 | Pause Boolean | $00 = Unpaused, $01 = Paused |
| 0x0020 | Lives | |
| 0x0040 | Speed | |
| 0x0041 | Missiles enabled | |
| 0x0042 | Power up bar location | |
| 0x0044 | Weapon | $00 = Normal, $01 = Laser, $02 = Double |
| 0x0045 | Number of Options | Keep <= $02. Any other number causes glitches. |
| 0x0046 | Shield Strength | |
| 0x004C | Time before screen transition. | |
| 0x0060 | enemy load? | $02 when enemies is being loaded and goes to $00 when you died |
| 0x0100 | determines Vic Viper's status... | $01 = alive, $02 = dead. |
| 0x07A0-0x07B7 | Horizontal Location of Vic Viper | From Least to Most Recent |
| 0x07B0-0x07C7 | Vertical Location of Vic Viper | From Least to Most Recent |
| 0x07E4 | Low Digit of High Score | |
| 0x07E5 | Middle Digit of High Score | |
| 0x07E6 | High Digit of High Score |