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ram.asm initial commit. Replaced all address defines with labels

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Value defines styled without quotes, # moved to load/store/cmp site
Added registers.asm (copied from spannerisms JP disassembly)
Added a bunch of length annotations
Deleted old or trivial commented out code
Deleted: ganonfixes.asm, map.asm, seedtag.asm
Replaced obsolete credits.asm with creditsnew.asm
Moved scratch space at $7F5020-3F to mirrored WRAM (7E1E70-8F)
Moved clock RAM to mirrored WRAM (7E1E90-9F)
dialog.asm: FreeDungeonItemNotice preserves callee-preserved scratch RAM
Toast buffer moved to mirrored WRAM (7E1E0E-0F)
servicerequest.asm: long store to $012E converted to word length store
This commit is contained in:
cassidoxa
2022-11-05 00:50:25 -04:00
parent cafb0908a0
commit 43f753b517
72 changed files with 7706 additions and 7305 deletions
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59
decryption.asm
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@@ -1,13 +1,10 @@
!CryptoBuffer = "$7F5100"
;!keyBase = "$7F50D0"
;--------------------------------------------------------------------------------
LoadStaticDecryptionKey:
PHB : PHA : PHX : PHY : PHP
REP #$30 ; set 16-bit accumulator & index registers
LDX.w #StaticDecryptionKey ; Source
LDY.w #!keyBase ; Target
LDY.w #KeyBase ; Target
LDA.w #$000F ; Length
MVN $307F
@@ -23,65 +20,63 @@ RetrieveValueFromEncryptedTable:
;Returns result in A
PHX : PHY
PHA
LDY $04 : PHY : LDY $06 : PHY : LDY $08 : PHY
LDY $0A : PHY : LDY $0C : PHY : LDY $0E : PHY
LDY.b Scrap04 : PHY : LDY.b Scrap06 : PHY : LDY.b Scrap08 : PHY
LDY.b Scrap0A : PHY : LDY.b Scrap0C : PHY : LDY.b Scrap0E : PHY
AND.w #$FFF8 : TAY
LDA [$00], Y : STA.l !CryptoBuffer : INY #2
LDA [$00], Y : STA.l !CryptoBuffer+2 : INY #2
LDA [$00], Y : STA.l !CryptoBuffer+4 : INY #2
LDA [$00], Y : STA.l !CryptoBuffer+6
LDA.b [$00], Y : STA.l CryptoBuffer : INY #2
LDA.b [$00], Y : STA.l CryptoBuffer+2 : INY #2
LDA.b [$00], Y : STA.l CryptoBuffer+4 : INY #2
LDA.b [$00], Y : STA.l CryptoBuffer+6
LDA.w #$0002 : STA $04 ;set block size
LDA.w #$0002 : STA.b Scrap04 ;set block size
JSL.l XXTEA_Decode
PLA : STA $0E : PLA : STA $0C : PLA : STA $0A
PLA : STA $08 : PLA : STA $06 : PLA : STA $04
PLA : STA.b Scrap0E : PLA : STA.b Scrap0C : PLA : STA.b Scrap0A
PLA : STA.b Scrap08 : PLA : STA.b Scrap06 : PLA : STA.b Scrap04
PLA : AND.w #$0007 : TAX
LDA.l !CryptoBuffer, X
LDA.l CryptoBuffer, X
PHA
LDA.w #$0000
STA.l !CryptoBuffer
STA.l !CryptoBuffer+2
STA.l !CryptoBuffer+4
STA.l !CryptoBuffer+6
STA.l CryptoBuffer
STA.l CryptoBuffer+2
STA.l CryptoBuffer+4
STA.l CryptoBuffer+6
PLA
PLY : PLX
RTL
;--------------------------------------------------------------------------------
!ChestData = "$01E96C"
!ChestData_Payload = "$1EABC" ; !ChestData+$0150
ChestData = $01E96C
ChestDataPayload = $01EABC ; ChestData+$0150
;--------------------------------------------------------------------------------
GetChestData:
LDA.l IsEncrypted : BNE .encrypted
INC $0E : LDX.w #$FFFD ; what we wrote over
INC.b Scrap0E : LDX.w #$FFFD ; what we wrote over
JML.l Dungeon_OpenKeyedObject_nextChest
.encrypted
INC $0E : LDX.w #$FFFE
INC.b Scrap0E : LDX.w #$FFFE
.nextChest
INX #2 : CPX.w #$0150 : BEQ .couldntFindChest
LDA !ChestData, X : AND.w #$7FFF : CMP $A0 : BNE .nextChest
LDA.l ChestData, X : AND.w #$7FFF : CMP.b $A0 : BNE .nextChest
DEC $0E : BNE .nextChest
DEC.b Scrap0E : BNE .nextChest
LDA $00 : PHA : LDA $02 : PHA
LDA.b Scrap00 : PHA : LDA.b Scrap02 : PHA
LDA.w #!ChestData_Payload : STA $00
LDA.w #!ChestData_Payload>>16 : STA $02
LDA.w #ChestDataPayload : STA.b Scrap00
LDA.w #ChestDataPayload>>16 : STA.b Scrap02
TXA : LSR
JSL RetrieveValueFromEncryptedTable
STA $0C
STA.b Scrap0C
PLA : STA $02 : PLA : STA $00
PLA : STA.b Scrap02 : PLA : STA.b Scrap00
LDA !ChestData, X : ASL A : BCC .smallChest
LDA.l ChestData, X : ASL A : BCC .smallChest
JML.l Dungeon_OpenKeyedObject_bigChest ;(bank01.asm line #13783)