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The Little Mermaid/RAM map: Difference between revisions
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|0x00B5||Bubble range|| | |0x00B5||Bubble range|| | ||
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|0X00E4 - 0X00E7||RNG Seed||Fibonacci LFSR (Function [[ | |0X00E4 - 0X00E7||RNG Seed||Fibonacci LFSR (Function [[The Little Mermaid:ROM map#Function 0xC250|0xC250]]) | ||
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|0x00E9||Current stage|| | |0x00E9||Current stage|| | ||
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|0x00EF||Current object slot||Used in [[ | |0x00EF||Current object slot||Used in [[The Little Mermaid:ROM map#Function 0x8000|Function 0x8000 (Page 6)]] | ||
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|0x00F7||Screen x-pos within current room segment|| | |0x00F7||Screen x-pos within current room segment|| | ||
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|0x0620 - 0x063F||Current color palettes|| | |0x0620 - 0x063F||Current color palettes|| | ||
{{Internal Data}} |
Latest revision as of 14:34, 24 January 2024
The following article is a RAM map for The Little Mermaid.
RAM | Function | Details | ||||
0x0000 - 0x0001 | Pointer address | Used to jump to specific section | ||||
0x0014 | PAD1 new input | Input new to current frame | ||||
0x0015 | PAD2 new input | Input new to current frame | ||||
0x0016 | PAD1 input | All current input
| ||||
0x0017 | PAD2 input | All current input | ||||
0x0030 | Ariel's current action |
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0x0031 | Ariel's direction of movement | |||||
0x003A | Object being held | # of object slot | ||||
0x003B | A button timer (bubbles/throw) | |||||
0x0050 | Room info |
| ||||
0x0051 | Size of current room | |||||
0x0052 | Position in current room | 256/240 pixel segments depending on horizontal or vertical scrolling | ||||
0x0092 | Global timer | |||||
0X00B0 | Lives | |||||
0X00B1 | Health | |||||
0x00B4 | Bubble power | |||||
0x00B5 | Bubble range | |||||
0X00E4 - 0X00E7 | RNG Seed | Fibonacci LFSR (Function 0xC250) | ||||
0x00E9 | Current stage | |||||
0x00EF | Current object slot | Used in Function 0x8000 (Page 6) | ||||
0x00F7 | Screen x-pos within current room segment | |||||
0x00F8 | Screen y-pos within current room segment | |||||
0x00FA | Screen y-pos (high byte) | 240 pixels per segment | ||||
0x00FB | Screen y-pos (low byte) | pixels | ||||
0x00FC | Screen x-pos (high byte) | 256 pixels per segment | ||||
0x00FD | Screen x-pos (low byte) | pixels | ||||
0x0100 - 0x01BF | Stack | |||||
0x0300 - 0x030F | Object Phase |
| ||||
0x0310 - 0x031F | Object ID | Determines object's behavior | ||||
0x0320 - 0x032F | y-position subpixel | |||||
0x0330 - 0x033F | x-position low byte (pixel) | |||||
0x0340 - 0x034F | x-position high byte | |||||
0x0350 - 0x035F | y-position subpixel | |||||
0x0360 - 0x036F | y-position low byte (pixel) | |||||
0x0370 - 0x037F | y-position high byte | |||||
0x0380 - 0x038F | x-speed low byte (subpixels/frame) | |||||
0x0390 - 0x039F | x-speed high byte (pixels/frame) | |||||
0x03A0 - 0x03AF | y-speed low byte (subpixels/frame) | |||||
0x03B0 - 0x03BF | y-speed high byte (pixels/frame) | |||||
0x03C0 - 0x03CF | Attributes |
| ||||
0x03D0 - 0x03DF | Direction of movement | Speed values above are scalar. They are used in conjunction with this value to determine velocity.
| ||||
0x03F0 - 0x03FF | HP | |||||
0x0400 - 0x040F | Sprite orientation |
| ||||
0x0430 - 0x043F | Graphic ID | Determines object's animation loop | ||||
0x0460 - 0x046F | Counter 1 | Use depends on object | ||||
0x0470 - 0x047F | Counter 2 | Use depends on object | ||||
0x0480 - 0x048F | Counter 3 | Use depends on object | ||||
0x0490 - 0x049F | Counter 4 | Use depends on object | ||||
0x04A0 - 0x04AF | Stun timer | Actions/animation paused while nonzero | ||||
0x0620 - 0x063F | Current color palettes |
|