Add SNES hardware registers and patches documentation
This commit is contained in:
scawful
47
Core/ZS ROM MAP.txt
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47
Core/ZS ROM MAP.txt
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Expanded space used by ZScream as of 02/28/2025
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Addresses are PC unless stated otherwise.
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ZS reserves everything up to 1.5MB or up to 0x150000
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And an additional 3 banks at the end of the 2.0MB 0x1E8000 to 0x1FFFFF
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0x100000 - 0x107FFF: 1 Bank
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Nothing?
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0x108000 - 0x10FFFF: 1 Bank
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Title screen data
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Dungeon map data
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0x110000 - 0x117FFF: 1 Bank
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Default room header location
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Seems to have been some old dungeon object data expansion but that has since been moved.
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0x118000 - 0x11FFFF: 1 Bank
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Seems to have been some old dungeon object data expansion but that has since been moved.
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0x120000 - 0x127FFF: 1 Bank
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Expanded overlay data
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0x128000 - 0x12FFFF: 1 Bank
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Custom collision data
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0x130000 - 0x137FFF: 1 Bank
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Overworld map data overflow
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0x138000 - 0x13FFFF: 1 Bank
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Expanded Dungeon object data
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0x140000 - 0x147FFF: 1 Bank
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Custom overworld data
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0x148000 - 0x14FFFF: 1 Bank
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Expanded Dungeon object data
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0x1E0000 - 0x1E7FFF: 1 Bank
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Custom ASM Patches
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0x1E8000 - 0x1EFFFF: 1 Bank
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Expanded Tile16 space
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0x1F0000 - 0x1FFFFF: 2 Banks
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Edpanded Tile32 space
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159
Core/patches.asm
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159
Core/patches.asm
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; This file contains all direct patches to the original ROM.
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; It is included from Oracle_main.asm.
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; UnderworldTransition_ScrollRoom
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org $02BE5E : JSL Graphics_Transfer
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; Whirlpool
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org $1EEEE4 : JSL DontTeleportWithoutFlippers
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; SpriteDraw_Roller
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org $058EE6 : JSL PutRollerBeneathLink
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; =========================================================
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; Sprite Recoil and Death
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; TODO: Sprite_AttemptKillingOfKin
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; Kydreeok Head die like Sidenexx
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org $06F003 : CMP.b #$CF
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; Remove sidenexx death from booki
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org $06EFFF : NOP #4
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; Make Dark Link die like sidenexx
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org $06F003 : CMP.b #$C1
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; Make Helmet ChuChu recoil link
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org $06F37D : CMP.b #$05
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; Make Kydreeok head recoil Link
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org $06F381 : CMP.b #$CF
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; =========================================================
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InCutScene = $7EF303
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; Player2JoypadReturn
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org $0083F8
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LDA InCutScene : BEQ .notInCutscene
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STZ $F0
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STZ $F2
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STZ $F4
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STZ $F6
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STZ $F8
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STZ $FA ; kill all input
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.notInCutscene
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RTS
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assert pc() <= $00841E
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; =========================================================
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org $1EF27D
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ShopItem_Banana:
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{
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JSR $F4CE ; SpriteDraw_ShopItem
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JSR $FE78 ; Sprite_CheckIfActive_Bank1E
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JSL $1EF4F3 ; Sprite_BehaveAsBarrier
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JSR $F391 ; ShopItem_CheckForAPress
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BCC .exit
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LDA.l Bananas : CMP.b #$0A : BCS .error
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LDA.b #$1E : LDY.b #$00
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JSR $F39E ; ShopItem_HandleCost
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BCC $F1A1 ; ShopItem_GiveFailureMessage
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STZ.w SprState,X
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INC.b Bananas
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LDY.b #$42 : JSR $F366 ; ShopItem_HandleReceipt
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.exit
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RTS
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.error
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JSR $F38A ; ShopItem_PlayBeep
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}
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assert pc() <= $1EF2AB
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; =========================================================
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; Shop item heart OAM
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; SpriteDraw_ShopItem
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org $1EF42E
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dw -4, 16 : db $03, $02, $00, $00 ; 3
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dw -4, 16 : db $03, $02, $00, $00 ; 3
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dw 4, 16 : db $30, $02, $00, $00 ; 0
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dw 0, 0 : db $E5, $03, $00, $02 ; item
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dw 4, 11 : db $38, $03, $00, $00 ; shadow
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; =========================================================
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; Octoballoon_FormBabby
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; Reduce by half the number of babies spawned
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org $06D814 : LDA.b #$02
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; SpritePrep_HauntedGroveOstritch
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org $068BB2 : NOP #11
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; HauntedGroveRabbit_Idle
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org $1E9A8F : NOP #5
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; MedallionTablet (Goron)
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org $05F274 : LDA.l $7EF378 ; Unused SRAM
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org $08C2E3 : dw $006F ; BUTTER SWORD DIALOGUE
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; Fix the capital 'B' debug item cheat.
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org $0CDC26 : db $80 ; replace a $F0 (BEQ) with a $80 (BRA).
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; Update Catfish Item Get to Bottle
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org $1DE184 : LDA.b #$16 : STA.w $0D90, X
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; Follower_Disable
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; Don't disable Kiki so we can switch maps with him.
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org $09ACF3 : LDA.l $7EF3CC : CMP.b #$0E
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; Kiki, don't care if we're not in dark world
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org $099FEB : LDA.b $8A : AND.b #$FF
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org $1EE48E : NOP #6
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; Kiki activate cutscene 3 (tail palace)
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org $1EE630 : LDA.b #$03 : STA.w $04C6
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; Kid at ranch checks for flute
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org $05FF7D : LDA.l $7EF34C : CMP.b #$01
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; Raven Damage (LW/DW)
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org $068963 : db $81, $84
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; Running Man draw palette
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org $05E9CD
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SpriteDraw_RunningBoy:
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#_05E9CD: dw 0, -8 : db $2C, $00, $00, $02
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#_05E9D5: dw 0, 0 : db $EE, $0E, $00, $02
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#_05E9DD: dw 0, -7 : db $2C, $00, $00, $02
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#_05E9E5: dw 0, 1 : db $EE, $4E, $00, $02
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#_05E9ED: dw 0, -8 : db $2A, $00, $00, $02
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#_05E9F5: dw 0, 0 : db $CA, $0E, $00, $02
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#_05E9FD: dw 0, -7 : db $2A, $00, $00, $02
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#_05EA05: dw 0, 1 : db $CA, $4E, $00, $02
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#_05EA0D: dw 0, -8 : db $2E, $00, $00, $02
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#_05EA15: dw 0, 0 : db $CC, $0E, $00, $02
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#_05EA1D: dw 0, -7 : db $2E, $00, $00, $02
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#_05EA25: dw 0, 1 : db $CE, $0E, $00, $02
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#_05EA2D: dw 0, -8 : db $2E, $40, $00, $02
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#_05EA35: dw 0, 0 : db $CC, $4E, $00, $02
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#_05EA3D: dw 0, -7 : db $2E, $40, $00, $02
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#_05EA45: dw 0, 1 : db $CE, $4E, $00, $02
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; Sword Barrier Sprite Prep
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; Skip overworld flag check, sprite is indoors now
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org $06891B : NOP #12
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