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$008000
|
85 bytes |
ASM |
This is the starting address for YI. This takes care of basic initialization such as disabling IRQ, HDMA, DMA, clearing the SPC ports, enabling F-blank, disabling emulation mode, disabling decimal mode, initializing the direct page, and setting up the stack, among other things. |
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$0080F8
|
56 bytes |
Debug |
Routine used for frame advance debug code. Enabled by tweak at $0080F7. See details for controls. |
Controls
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$00816A
|
207 bytes |
Pointer |
Gamemode subroutine table, 3 bytes per entry. |
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$008275
|
2 bytes |
Empty |
Empty (filled with FF) |
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$008288
|
35 bytes |
Subroutine |
JSL to copy a block of memory into RAM.
Input:
A: Size of the block
$20-$22: RAM Destination
$23-$25: DMA Source |
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$0082D0
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19 bytes |
ASM |
Copies SPC program |
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$0083CD
|
34 bytes |
Subroutine |
Subroutine that handles fading effects. |
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$00841F
|
140 bytes |
Subroutine |
Music uploader subroutine |
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$00851C
|
16 bytes |
Music |
Item-Denial table for each music track: $01-$7F: disable items, $00 and $80-$FF: enable items |
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$008543
|
142 bytes |
ASM |
Music uploader controller |
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$0085D2
|
10 bytes |
Subroutine |
Subroutine that plays sound effects |
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$00B039
|
768 bytes |
Graphics |
List of sprite GFX file numbers (1 byte each) that make up each sprite set (6 files per set). |
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$00BFF6
|
10 bytes |
Empty |
Empty (filled with FF) |
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$00DE44
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35 bytes |
Super FX |
Calls a Super FX routine, Register X = Bank, Register A = Address |
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$00E101
|
37 bytes |
Subroutine |
Kill Yoshi Subroutine. This one kills Yoshi as he was killed by lava. Note that this routine is copied into RAM so jump to $7EE101 if GSU is active.
$00E10F is Yoshi's initial Y speed in the death animation.
$00E0FD (4 bytes) is the X speed Yoshi has got in the death animation, for facing right and left. |
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$00E552
|
1024 bytes |
Table |
Lookup table for function y = 1/x, copied into $702200-$7025FF (Used by GSU to divide. It does not have a hardware divide so this lookup table is used instead) |
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$00F7A9
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2039 bytes |
Empty |
Empty (filled with FF) |
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$00FFA0
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5 bytes |
Misc. |
ROM build date and time. On a U 1.0 ROM, it's 11:19 am on July 31st, 1995 |
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$00FFA5
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11 bytes |
Empty |
Empty (filled with FF) |
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$00FFB0
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2 bytes |
Misc. |
ROM registration: Maker code (ASCII): "01" (Nintendo) |
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$00FFB2
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4 bytes |
Misc. |
ROM registration: Game code (ASCII): "YI " |
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$00FFB6
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6 bytes |
Misc. |
ROM registration: reserved (all $00) |
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$00FFBC
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1 byte |
Misc. |
ROM registration: Expansion FLASH Size ($00 = none) |
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$00FFBD
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1 byte |
Misc. |
ROM registration: Super FX RAM size ($05 = 32KB) |
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$00FFBE
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1 byte |
Misc. |
ROM registration: Special version ($00 = not special) |
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$00FFBF
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1 byte |
Misc. |
ROM registration: Chipset sub-type ($00) |
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$00FFC0
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21 bytes |
Misc. |
ROM header: Cartridge title (ASCII): "YOSHI'S ISLAND " |
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$00FFD5
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1 byte |
Misc. |
ROM header: ROM Makeup ($20 = LoROM) |
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$00FFD6
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1 byte |
Misc. |
ROM header: Chipset ($15 = ROM + SuperFX + RAM + SRAM) |
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$00FFD7
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1 byte |
Misc. |
ROM header: ROM size ($0B = 2MB) |
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$00FFD8
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1 byte |
Misc. |
ROM header: SRAM size |
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$00FFD9
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1 byte |
Misc. |
ROM header: Region ($01 = NTSC) |
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$00FFDA
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1 byte |
Misc. |
ROM header: $33 (fixed value) |
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$00FFDB
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1 byte |
Misc. |
ROM header: Version ($00 = 1.0) |
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$00FFDC
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2 bytes |
Misc. |
ROM header: Checksum complement (inverted bits) |
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$00FFDE
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2 bytes |
Misc. |
ROM header: Checksum |
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$00FFE0
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4 bytes |
Misc. |
2 unused native vectors |
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$00FFE4
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2 bytes |
Misc. |
Native COP vector (unused) |
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$00FFE6
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2 bytes |
Misc. |
Native BRK vector (unused) |
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$00FFE8
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2 bytes |
Misc. |
Native ABORT vector (unused) |
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$00FFEA
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2 bytes |
Misc. |
Native NMI vector (vblank) |
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$00FFEC
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2 bytes |
Misc. |
Native RESET vector (unused) |
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$00FFEE
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2 bytes |
Misc. |
Native IRQ vector |
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$00FFF0
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4 bytes |
Misc. |
2 unused emulation vectors |
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$00FFF4
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2 bytes |
Misc. |
Emulation COP vector (unused) |
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$00FFF6
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2 bytes |
Misc. |
Emulation BRK vector (unused) |
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$00FFF8
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2 bytes |
Misc. |
Emulation ABORT vector (unused) |
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$00FFFA
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2 bytes |
Misc. |
Emulation NMI vector (unused) |
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$00FFFC
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2 bytes |
Misc. |
Emulation RESET vector |
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$00FFFE
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2 bytes |
Misc. |
Emulation IRQ vector (unused) |
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$028000
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72 bytes |
Sprite Palette |
Yoshi colors used in-level. Arranged by translevel number. |
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$02FFD7
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41 bytes |
Empty |
Empty (filled with FF) |
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$038000
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1326 bytes |
Pointer |
Long pointers to sprite init routines in sprite ID order ($000 - $1B9) |
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$03852E
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1326 bytes |
Pointer |
Long pointers to sprite main routines in sprite ID order ($000 - $1B9) |
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$038A5C
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1326 bytes |
Pointer |
Long pointers to sprite head bop routines in sprite ID order ($000 - $1B9) |
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$038F8A
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1326 bytes |
Pointer |
Long pointers to sprite riding Yoshi routines in sprite ID order ($000 - $1B9) |
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$03A364
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300 bytes |
Subroutine |
Subroutine that spawns sprites |
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$03FEEE
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274 bytes |
Empty |
Empty (filled with FF) |
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$0489B8
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8 bytes |
Sprite Palette |
Shy Guy Colors (Green, Red, Yellow, Pink) |
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$04AC9C
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29 bytes |
Subroutine |
Kill Yoshi Subroutine. This one kills Yoshi as he was killed by a spike. |
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$05C6FD
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16 bytes |
Misc. |
Table of '?' bucket rotation effects |
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$05FFC4
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60 bytes |
Empty |
Empty (filled with FF) |
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$06FEAA
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342 bytes |
Empty |
Empty (filled with FF) |
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$07FF47
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185 bytes |
Empty |
Empty (filled with FF) |
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$089FD0
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48 bytes |
Empty |
Empty (filled with 01) |
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$09AF70
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206 bytes |
Empty |
Empty (filled with 01) |
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$09EDCE
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624 bytes |
Empty |
Empty (filled with 01) |
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$09F18F
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687 bytes |
Empty |
Empty (filled with 01) |
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$0AEC2B
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4 bytes |
Player Physics |
Yoshi max speed for acceleration to apply, for right and left. |
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$0B9787
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121 bytes |
Empty |
Empty (filled with 01) |
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$0BF3B7
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3145 bytes |
Empty |
Empty (filled with FF) |
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$0CDACA
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24 bytes |
Sprite Palette |
Color of Kamek's first magic spell; 2 bytes per boss battle. |
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$0CDAE2
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24 bytes |
Sprite Palette |
Color of Kamek's second magic spell; 2 bytes per boss battle. |
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$0CDAFA
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12 bytes |
Music |
Music value used for each boss battle: $0A is x-4 boss music (or for level header music setting 7 or 8, $0A becomes the longer intro used in piranha & raven), and $0C is x-8 boss music |
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$0CFF69
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151 bytes |
Empty |
Empty (filled with FF) |
1 
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