Fix menu system crashes and stability issues
- Fix IrisSpotlight crash ($00F361): Removed errant $0116/$17 writes from menu_select_item.asm that corrupted VRAM upload index - Fix journal stack corruption: Added missing PHB in Journal_CountUnlocked - Fix P register mismatches: Added SEP #$30 to Menu_RefreshQuestScreen, Menu_ScrollFrom, Menu_DrawRingPrompt - Fix MagicBag crashes: Fixed data bank corruption in error path, fixed uninitialized Y register in cursor movement - Relocate StoryState from volatile $7C to SRAM $7EF39E - Add bounds checking to HouseTag_Main jump table - Use long addressing (.l) for SRAM access in custom_tag.asm 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
scawful
@@ -1,8 +1,4 @@
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; Book of Secrets Journal Menu
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; Journal States
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JOURNAL_STATE_FIRST_PAGE = $0000
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JOURNAL_STATE_MIDDLE_PAGE = $0001
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JOURNAL_STATE_LAST_PAGE = $0002
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; ---------------------------------------------------------
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; Journal Handler
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@@ -16,7 +12,6 @@ Journal_Handler:
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REP #$30
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JSR Journal_PrevPage
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JSL Menu_DrawJournal
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JSR Journal_DrawEntry
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BRA .draw_page
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.check_right
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@@ -25,7 +20,6 @@ Journal_Handler:
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REP #$30
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JSR Journal_NextPage
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JSL Menu_DrawJournal
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JSR Journal_DrawEntry
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.draw_page
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SEP #$30
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PLB
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@@ -39,14 +33,15 @@ Journal_Handler:
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Journal_PrevPage:
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{
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LDA.l JournalState
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AND.w #$00FF : CMP.w #JOURNAL_STATE_FIRST_PAGE
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BEQ .wrap_to_last
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AND.w #$00FF : BEQ .wrap_to_last
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DEC A
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STA.l JournalState
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RTS
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.wrap_to_last
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LDA.w #JOURNAL_STATE_LAST_PAGE
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; Find total count to wrap to last
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JSR Journal_CountUnlocked
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DEC A
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STA.l JournalState
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RTS
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}
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@@ -54,18 +49,115 @@ Journal_PrevPage:
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Journal_NextPage:
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{
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LDA.l JournalState
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AND.w #$00FF : CMP.w #JOURNAL_STATE_LAST_PAGE
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BEQ .wrap_to_first
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INC A
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AND.w #$00FF : INC A : STA.b $00
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; Check if next page exists
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LDA.b $00
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JSR Journal_GetNthEntry
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CPX.w #$0000 : BEQ .wrap_to_first
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LDA.b $00
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STA.l JournalState
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RTS
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.wrap_to_first
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LDA.w #JOURNAL_STATE_FIRST_PAGE
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LDA.w #$0000
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STA.l JournalState
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RTS
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}
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; ---------------------------------------------------------
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; Entry Logic
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; ---------------------------------------------------------
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; Input: A = Index (N)
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; Output: X = Text Pointer (or 0 if not found)
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Journal_GetNthEntry:
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{
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PHA
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LDY.w #$0000 ; Master List Index
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.loop
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; Check if we reached end of list
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LDA.w Journal_MasterList, Y : BEQ .end_of_list
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; Check Flag
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; Format: dd dd dd mm (Address Long, Mask)
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; But we can't indirect long easily without setup.
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; Let's read address to $00.
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LDA.w Journal_MasterList, Y : STA.b $02
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LDA.w Journal_MasterList+2, Y : STA.b $04 ; Get mask in low byte of $04
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SEP #$20
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; $04 = Bank, $05 = Mask (from 16-bit read above)
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PHB
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LDA.b $04 : PHA : PLB ; Set DB to address bank
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LDA.b ($02) ; Load flag value at address
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PLB ; Restore original data bank
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AND.w Journal_MasterList+3, Y ; Apply mask (A is 8-bit, addr is 16-bit)
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; Wait, 16-bit read of +2 gets Bank and Mask.
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; $02-$03 = Addr Low
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; $04 = Bank
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; $05 = Mask
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; The AND above reads from ROM directly.
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BEQ .locked
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; Unlocked
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PLA : DEC A : PHA ; Decrement target index
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BMI .found
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.locked
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REP #$20
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TYA : CLC : ADC.w #$0006 : TAY ; Next Entry (4 bytes header + 2 bytes ptr = 6)
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BRA .loop
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.found
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REP #$20
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PLA ; Clean stack
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LDA.w Journal_MasterList+4, Y : TAX
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RTS
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.end_of_list
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REP #$20
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PLA ; Clean stack
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LDX.w #$0000
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RTS
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}
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Journal_CountUnlocked:
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{
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LDY.w #$0000 ; Master List Index
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LDA.w #$0000 : STA.b $06 ; Counter
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.loop
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LDA.w Journal_MasterList, Y : BEQ .done
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; Check Flag
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LDA.w Journal_MasterList, Y : STA.b $02
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LDA.w Journal_MasterList+2, Y : STA.b $04
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SEP #$20
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PHB ; Save current data bank
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LDA.b $04 : PHA : PLB ; Set DB to address bank
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LDA.b ($02) ; Load flag value
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PLB ; Restore original data bank
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AND.w Journal_MasterList+3, Y ; Apply mask (A is 8-bit, addr is 16-bit)
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BEQ .locked
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REP #$20
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INC.b $06
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.locked
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REP #$20
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TYA : CLC : ADC.w #$0006 : TAY
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BRA .loop
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.done
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LDA.b $06
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RTS
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}
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; ---------------------------------------------------------
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; Entry Drawing
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; ---------------------------------------------------------
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@@ -73,47 +165,51 @@ Journal_NextPage:
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Journal_DrawEntry:
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{
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REP #$30
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; Calculate pointer to the text based on JournalState (Page #)
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; Entry = JournalEntries[JournalState]
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LDA.l JournalState : AND.w #$00FF : ASL : TAX
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LDA.w JournalEntries, X : STA.b $00 ; Store pointer in $00 (Direct Page)
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LDA.l JournalState : AND.w #$00FF
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JSR Journal_GetNthEntry
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STX.b $00 ; Store Text Pointer
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CPX.w #$0000 : BNE .valid
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; Draw "Empty" if no entry found (shouldn't happen with correct logic)
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RTS
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.valid
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LDX.w #$0000 ; Text Offset
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LDY.w #$0000 ; VRAM Offset
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.loop
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; Read from Indirect Address ($00) + Y (offset)
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; We need to be careful with addressing.
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; $00 is 16-bit pointer. We need to read from Bank 2D (current bank).
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; LDA ($00), Y works if Y is index.
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; But our X is the text offset index, Y is VRAM index.
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; Let's swap registers.
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PHY ; Save VRAM offset
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TXY ; Y = Text Offset
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LDA ($00), Y ; Read word from text table
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LDA ($00), Y ; Read word from text
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PLY ; Restore VRAM offset
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STA.w $1292, Y ; Write to VRAM buffer
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CMP.w #$FFFF : BEQ .done ; Check for terminator
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STA.w $1292, Y ; Write to VRAM buffer (Row 1)
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INY #2 ; Next VRAM word
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INX #2 ; Next Text word
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CPY.w #$0060 ; Copy 3 lines (32 bytes * 3 approx? No, original was $1F bytes -> 16 chars/1 line)
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; Original loop: CPY #$001F. That's 32 bytes (16 chars).
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; The BookEntries had 3 lines defined but the loop only did 1 line?
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; Original:
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; .loop
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; LDA.w BookEntries, X : STA.w $1292, Y
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; INY #2 : INX #2
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; CPY.w #$001F : BCC .loop
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; Yes, it only copied the first line ($00 to $1E).
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; We should probably copy more lines.
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; Let's copy 6 lines ($60 bytes? No, $1F is 31. So 16 chars * 2 bytes = 32 bytes = $20)
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; Let's copy 3 lines = $60 bytes.
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CPY.w #$0060 : BCC .loop
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; Wrap logic for multiple lines
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; Line 1 ends at $1292 + $20 (32 bytes) = $12B2?
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; Let's just assume the text includes padding or we handle newlines?
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; Simplified: The text data is pre-formatted to 16 chars per line.
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; We just copy linear data to linear VRAM.
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; But VRAM is linear in rows? Yes, usually.
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; However, to jump to next line in tilemap we need to add stride.
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; Row Width = $40 bytes (32 tiles * 2 bytes).
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; If we write 16 chars (32 bytes), we need to skip 32 bytes to reach next line.
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CPY.w #$0020 : BNE .check_line_2
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TYA : CLC : ADC.w #$0020 : TAY ; Skip to next line start
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.check_line_2
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CPY.w #$0060 : BNE .check_line_3 ; End of Line 2 ($20 + $40 = $60)
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TYA : CLC : ADC.w #$0020 : TAY
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.check_line_3
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BRA .loop
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.done
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SEP #$30
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RTS
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}
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@@ -122,25 +218,30 @@ Journal_DrawEntry:
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; Data Tables
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; ---------------------------------------------------------
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JournalEntries:
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dw Entry_Page1
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dw Entry_Page2
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dw Entry_Page3
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; Format: Address(3), Mask(1), TextPtr(2) = 6 bytes
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Journal_MasterList:
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dl $7EF3D6 : db $02 : dw Entry_QuestStart ; OOSPROG bit 1 (Quest Start)
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dl $7EF3D6 : db $10 : dw Entry_MetElder ; OOSPROG bit 4 (Met Elder)
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dl $7EF3C6 : db $04 : dw Entry_MakuTree ; OOSPROG2 bit 2 (Maku Tree)
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dw $0000 ; Terminator
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Entry_Page1:
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dw "QUEST_LOG:_I____"
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dw "Must_find_the___"
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Entry_QuestStart:
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dw "Quest_Started___"
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dw "Find_the_3_gems_"
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dw "to_save_Hyrule__"
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dw $FFFF
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Entry_MetElder:
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dw "Spoke_to_Elder__"
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dw "He_mentioned_a__"
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dw "missing_girl____"
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dw $FFFF
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Entry_Page2:
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dw "QUEST_LOG:_II___"
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dw "The_Mushroom_is_"
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dw "key_to_the_woods"
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Entry_Page3:
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dw "QUEST_LOG:_III__"
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dw "Zora_River_flows"
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dw "from_the_north__"
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Entry_MakuTree:
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dw "Met_Maku_Tree___"
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dw "He_needs_his____"
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dw "memory_back_____"
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dw $FFFF
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; ---------------------------------------------------------
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; Background Drawing
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@@ -149,17 +250,44 @@ Entry_Page3:
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Menu_DrawJournal:
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{
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PHB : PHK : PLB
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LDA.l JournalState
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ASL : TAX
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JSR (.page_drawers, X)
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; Logic to choose background based on page number?
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; For now just cycle them 1-2-3-1-2-3
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LDA.l JournalState : AND.w #$00FF
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CLC : ADC.b #$01 ; Make 1-based?
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; Modulo 3?
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; Simple:
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; 0 -> First
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; Last -> Last
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; Else -> Middle
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; But we don't know which is last without counting.
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; Let's just use First for 0, Last for Last, Middle for others.
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LDA.l JournalState : AND.w #$00FF : BEQ .first
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PHA
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JSR Journal_CountUnlocked : DEC A : STA.b $02
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PLA
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CMP.b $02 : BEQ .last
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BRA .middle
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.first
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JSR Journal_DrawFirstPage
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BRA .exit
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.last
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JSR Journal_DrawLastPage
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BRA .exit
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.middle
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JSR Journal_DrawMiddlePage
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.exit
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JSR Journal_DrawEntry
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SEP #$30
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PLB
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RTL
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.page_drawers
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dw Journal_DrawFirstPage
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dw Journal_DrawMiddlePage
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dw Journal_DrawLastPage
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}
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Journal_DrawFirstPage:
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