ref: 8ed7c392cd73f9316c65b10b543c8074d5e46061
dir: /engine/debug/debug_room.asm/
; _DebugRoom.MenuItems indexes
const_def
const DEBUGROOMMENU_PAGE_1 ; 0
const DEBUGROOMMENU_PAGE_2 ; 1
const DEBUGROOMMENU_PAGE_3 ; 2
DEF DEBUGROOMMENU_NUM_PAGES EQU const_value
; _DebugRoom.Strings and _DebugRoom.Jumptable indexes
const_def
const DEBUGROOMMENUITEM_SP_CLEAR ; 00
const DEBUGROOMMENUITEM_WIN_WORK_CLR ; 01
const DEBUGROOMMENUITEM_POKEMON_GET ; 02
const DEBUGROOMMENUITEM_POKEDEX_COMP ; 03
const DEBUGROOMMENUITEM_TIMER_RESET ; 04
const DEBUGROOMMENUITEM_DECORATE_ALL ; 05
const DEBUGROOMMENUITEM_ITEM_GET ; 06
const DEBUGROOMMENUITEM_RTC_EDIT ; 07
const DEBUGROOMMENUITEM_NEXT ; 08
const DEBUGROOMMENUITEM_GB_ID_SET ; 09
const DEBUGROOMMENUITEM_BTL_REC_CLR ; 0a
const DEBUGROOMMENUITEM_POKEDEX_CLR ; 0b
const DEBUGROOMMENUITEM_HALT_CHK_CLR ; 0c
const DEBUGROOMMENUITEM_BATTLE_SKIP ; 0d
const DEBUGROOMMENUITEM_HOF_CLEAR ; 0e
const DEBUGROOMMENUITEM_ROM_CHECKSUM ; 0f
const DEBUGROOMMENUITEM_TEL_DEBUG ; 10
const DEBUGROOMMENUITEM_SUM_RECALC ; 11
const DEBUGROOMMENUITEM_RAM_FLAG_CLR ; 12
const DEBUGROOMMENUITEM_CHANGE_SEX ; 13
const DEBUGROOMMENUITEM_BT_BUG_POKE ; 14
_DebugRoom:
ldh a, [hJoyDown]
and SELECT | START
cp SELECT | START
ret nz
ldh a, [hDebugRoomMenuPage]
push af
xor a
ldh [hDebugRoomMenuPage], a
.loop
ld hl, wTilemap
ld bc, wTilemapEnd - wTilemap
ld a, " "
call ByteFill
call DebugRoom_PrintStackBottomTop
call DebugRoom_PrintWindowStackBottomTop
call DebugRoom_PrintRTCHaltChk
call DebugRoom_PrintBattleSkip
call DebugRoom_PrintTelDebug
call DebugRoom_PrintRAMFlag
call DebugRoom_PrintGender
ldh a, [hDebugRoomMenuPage]
ld [wWhichIndexSet], a
ld hl, .MenuHeader
call LoadMenuHeader
call SetUpMenu
.wait
call GetScrollingMenuJoypad
ld a, [wMenuJoypad]
and A_BUTTON | B_BUTTON
jr z, .wait
call CloseWindow
cp B_BUTTON
jr z, .done
ld a, [wMenuSelection]
ld hl, .Jumptable
rst JumpTable
jr .loop
.done
pop af
ldh [hDebugRoomMenuPage], a
ret
.MenuHeader:
db MENU_BACKUP_TILES ; flags
menu_coords 0, 0, 15, SCREEN_HEIGHT - 1
dw .MenuData
db 1 ; default option
.MenuData:
db STATICMENU_CURSOR ; flags
db 0 ; items
dw .MenuItems
dw PlaceMenuStrings
dw .Strings
.Strings:
; entries correspond to DEBUGROOMMENUITEM_* constants
db "SP CLEAR@"
db "WIN WORK CLR@"
db "#MON GET!@"
db "#DEX COMP@"
db "TIMER RESET@"
db "DECORATE ALL@"
db "ITEM GET!@"
db "RTC EDIT@"
db "NEXT@"
db "GB ID SET@"
db "BTL REC CLR@"
db "#DEX CLR@"
db "HALT CHK CLR@"
db "BATTLE SKIP@"
db "HOF CLEAR@"
db "ROM CHECKSUM@"
db "TEL DEBUG@"
db "SUM RECALC@"
db "RAM FLAG CLR@"
db "CHANGE SEX@"
db "BT BUG POKE@"
.Jumptable:
; entries correspond to DEBUGROOMMENUITEM_* constants
dw DebugRoomMenu_SpClear
dw DebugRoomMenu_WinWorkClr
dw DebugRoomMenu_PokemonGet
dw DebugRoomMenu_PokedexComp
dw DebugRoomMenu_TimerReset
dw DebugRoomMenu_DecorateAll
dw DebugRoomMenu_ItemGet
dw DebugRoomMenu_RTCEdit
dw DebugRoomMenu_Next
dw DebugRoomMenu_GBIDSet
dw DebugRoomMenu_BtlRecClr
dw DebugRoomMenu_PokedexClr
dw DebugRoomMenu_HaltChkClr
dw DebugRoomMenu_BattleSkip
dw DebugRoomMenu_HOFClear
dw DebugRoomMenu_ROMChecksum
dw DebugRoomMenu_TelDebug
dw DebugRoomMenu_SumRecalc
dw DebugRoomMenu_RAMFlagClr
dw DebugRoomMenu_ChangeSex
dw DebugRoomMenu_BTBugPoke
.MenuItems:
; entries correspond to DEBUGROOMMENU_* constants
; DEBUGROOMMENU_PAGE_1
db 8
db DEBUGROOMMENUITEM_SP_CLEAR
db DEBUGROOMMENUITEM_BATTLE_SKIP
db DEBUGROOMMENUITEM_RTC_EDIT
db DEBUGROOMMENUITEM_TIMER_RESET
db DEBUGROOMMENUITEM_HALT_CHK_CLR
db DEBUGROOMMENUITEM_GB_ID_SET
db DEBUGROOMMENUITEM_BTL_REC_CLR
db DEBUGROOMMENUITEM_NEXT
db -1
; DEBUGROOMMENU_PAGE_2
db 8
db DEBUGROOMMENUITEM_POKEMON_GET
db DEBUGROOMMENUITEM_ITEM_GET
db DEBUGROOMMENUITEM_POKEDEX_COMP
db DEBUGROOMMENUITEM_POKEDEX_CLR
db DEBUGROOMMENUITEM_DECORATE_ALL
db DEBUGROOMMENUITEM_HOF_CLEAR
db DEBUGROOMMENUITEM_ROM_CHECKSUM
db DEBUGROOMMENUITEM_NEXT
db -1
; DEBUGROOMMENU_PAGE_3
db 6
db DEBUGROOMMENUITEM_TEL_DEBUG
db DEBUGROOMMENUITEM_SUM_RECALC
db DEBUGROOMMENUITEM_RAM_FLAG_CLR
db DEBUGROOMMENUITEM_CHANGE_SEX
db DEBUGROOMMENUITEM_BT_BUG_POKE
db DEBUGROOMMENUITEM_NEXT
db -1
DebugRoomMenu_Next:
ldh a, [hDebugRoomMenuPage]
inc a
cp DEBUGROOMMENU_NUM_PAGES
jr c, .got_page
xor a ; DEBUGROOMMENU_PAGE_1
.got_page
ldh [hDebugRoomMenuPage], a
ret
DebugRoom_SaveChecksum:
ld a, BANK(sGameData)
call OpenSRAM
ld bc, sGameDataEnd - sGameData
ld de, 0
ld hl, sGameData
.loop
ld a, [hli]
add e
ld e, a
ld a, d
adc 0
ld d, a
dec bc
ld a, b
or c
jr nz, .loop
ld a, e
ld [sChecksum + 0], a
ld a, d
ld [sChecksum + 1], a
call CloseSRAM
ret
DebugRoomMenu_SpClear:
call YesNoBox
ret c
ld a, BANK(sStackTop)
call OpenSRAM
xor a
ld hl, sStackTop
ld [hli], a
ld [hl], a
call CloseSRAM
call DebugRoom_PrintStackBottomTop
ret
DebugRoom_PrintStackBottomTop:
ld a, BANK(sStackTop)
call OpenSRAM
hlcoord 16, 14
ld de, sStackTop + 1
ld c, 1
call PrintHexNumber
ld de, sStackTop + 0
ld c, 1
call PrintHexNumber
call CloseSRAM
hlcoord 16, 12
ld de, .SPString
call PlaceString
ld d, LOW(wStackBottom)
ld e, HIGH(wStackBottom)
push de
ld hl, sp+0
ld d, h
ld e, l
hlcoord 16, 13
ld c, 2
call PrintHexNumber
pop de
ret
.SPString:
db "SP:@"
DebugRoomMenu_WinWorkClr:
call YesNoBox
ret c
ld a, [wWindowStackPointer]
ld l, a
ld a, [wWindowStackPointer + 1]
ld h, a
inc hl
ld a, l
sub LOW(wWindowStack)
ld a, h
sbc HIGH(wWindowStack)
ret c
ld a, $00
call OpenSRAM
ld bc, -wWindowStack + $10000
add hl, bc
ld b, h
ld c, l
ld hl, wWindowStack
xor a
call ByteFill
call CloseSRAM
ret
DebugRoom_PrintWindowStackBottomTop:
ret ; stubbed out
ld a, $00
call OpenSRAM
ld hl, wWindowStack
.loop
ld a, h
cp $c0
jr z, .ok
ld a, [hl]
or a
jr nz, .ok
inc hl
jr .loop
.ok
call CloseSRAM
ld a, h
ld h, l
ld l, a
push hl
ld hl, sp+0
ld d, h
ld e, l
hlcoord 16, 17
ld c, 2
call PrintHexNumber
pop hl
ld d, LOW(wWindowStack)
ld e, HIGH(wWindowStack)
push de
ld hl, sp+0
ld d, h
ld e, l
hlcoord 16, 16
ld c, 2
call PrintHexNumber
pop de
hlcoord 16, 15
ld de, .WSPString
call PlaceString
ret
.WSPString:
db "WSP:@"
DebugRoomMenu_PokedexComp:
call YesNoBox
ret c
ld a, BANK(sGameData) ; aka BANK(sPlayerData)
call OpenSRAM
ld hl, sPlayerData + (wPokedexCaught - wPlayerData)
ld b, wEndPokedexSeen - wPokedexCaught
ld a, %11111111
.loop1
ld [hli], a
dec b
jr nz, .loop1
ld a, (1 << (NUM_POKEMON % 8)) - 1 ; %00000111
ld [sPlayerData + (wEndPokedexCaught - 1 - wPlayerData)], a
ld [sPlayerData + (wEndPokedexSeen - 1 - wPlayerData)], a
ld hl, sPlayerData + (wStatusFlags - wPlayerData)
set STATUSFLAGS_UNOWN_DEX_F, [hl]
ld a, UNOWN_A
ld [sGameData + (wFirstUnownSeen - wGameData)], a
ld hl, sGameData + (wUnownDex - wGameData)
ld b, NUM_UNOWN
.loop2
ld [hli], a
inc a
dec b
jr nz, .loop2
call CloseSRAM
call DebugRoom_SaveChecksum
ret
DebugRoomMenu_PokedexClr:
call YesNoBox
ret c
ld a, BANK(sPlayerData)
call OpenSRAM
ld hl, sPlayerData + (wStatusFlags - wPlayerData)
res STATUSFLAGS_UNOWN_DEX_F, [hl]
ld hl, sPlayerData + (wPokedexCaught - wPlayerData)
ld bc, wEndPokedexSeen - wPokedexCaught
xor a
call ByteFill
ld hl, sGameData + (wUnownDex - wGameData)
ld bc, NUM_UNOWN
xor a
call ByteFill
call CloseSRAM
call DebugRoom_SaveChecksum
ret
DebugRoomMenu_TimerReset:
call YesNoBox
ret c
ld a, BANK(sRTCStatusFlags)
call OpenSRAM
ld hl, sRTCStatusFlags
set 7, [hl]
call CloseSRAM
ret
DebugRoomMenu_BattleSkip:
ld a, BANK(sSkipBattle)
call OpenSRAM
ld a, [sSkipBattle]
inc a
and 1
ld [sSkipBattle], a
call CloseSRAM
ret
DebugRoom_PrintBattleSkip:
hlcoord 16, 6
ld de, .BTLString
call PlaceString
ld a, BANK(sSkipBattle)
call OpenSRAM
ld a, [sSkipBattle]
call CloseSRAM
hlcoord 16, 7
ld de, .DoString
or a
jr z, .ok
ld de, .SkipString
.ok
call PlaceString
ret
.BTLString:
db "BTL:@"
.DoString:
db " DO@"
.SkipString:
db "SKIP@"
DebugRoomMenu_ChangeSex:
ld a, BANK(sCrystalData)
call OpenSRAM
ld a, [sCrystalData + (wPlayerGender - wCrystalData)]
inc a
and 1
ld [sCrystalData + (wPlayerGender - wCrystalData)], a
call CloseSRAM
ret
DebugRoom_PrintGender:
hlcoord 16, 0
ld de, .SexString
call PlaceString
ld a, BANK(sCrystalData)
call OpenSRAM
ld a, [sCrystalData + (wPlayerGender - wCrystalData)]
call CloseSRAM
or a
ld a, "♂"
jr z, .ok
ld a, "♀"
.ok
hlcoord 19, 1
ld [hl], a
ret
.SexString:
db "SEX:@"
DebugRoomMenu_TelDebug:
ld a, BANK(sDebugTimeCyclesSinceLastCall)
call OpenSRAM
ld a, [sDebugTimeCyclesSinceLastCall]
inc a
cp 3
jr c, .ok
xor a
.ok
ld [sDebugTimeCyclesSinceLastCall], a
call CloseSRAM
ret
DebugRoom_PrintTelDebug:
hlcoord 16, 16
ld de, .TelString
call PlaceString
ld a, BANK(sDebugTimeCyclesSinceLastCall)
call OpenSRAM
ld a, [sDebugTimeCyclesSinceLastCall]
call CloseSRAM
hlcoord 16, 17
ld de, .BusyString
dec a
jr z, .ok
ld de, .HardString
dec a
jr z, .ok
ld de, .OffString
.ok
call PlaceString
ret
.TelString:
db "TEL:@"
.OffString:
db " OFF@"
.BusyString:
db "BUSY@"
.HardString:
db "HARD@"
DebugRoomMenu_RAMFlagClr:
call YesNoBox
ret c
ld a, BANK(sOpenedInvalidSRAM)
call OpenSRAM
xor a
ld [sOpenedInvalidSRAM], a
call CloseSRAM
ret
DebugRoom_PrintRAMFlag:
ld a, BANK(sOpenedInvalidSRAM)
call OpenSRAM
ld de, sOpenedInvalidSRAM
hlcoord 18, 4
ld c, 1
call PrintHexNumber
call CloseSRAM
hlcoord 16, 3
ld de, .RamString
call PlaceString
ret
.RamString:
db "RAM:@"
DebugRoomMenu_SumRecalc:
call YesNoBox
ret c
call DebugRoom_SaveChecksum
ret
DebugRoomMenu_DecorateAll:
call YesNoBox
ret c
ld a, BANK(sPlayerData)
call OpenSRAM
ld hl, sPlayerData + (wEventFlags - wPlayerData)
ld de, EVENT_DECO_BED_1 ; the first EVENT_DECO_* constant
ld b, SET_FLAG
ld c, EVENT_DECO_BIG_LAPRAS_DOLL - EVENT_DECO_BED_1 + 1
.loop
push bc
push de
push hl
call FlagAction
pop hl
pop de
pop bc
inc de
dec c
jr nz, .loop
call CloseSRAM
call DebugRoom_SaveChecksum
ret
MACRO paged_value
dw \1 ; value address
db \2 ; min value
db \3 ; max value
db \4 ; initial value
dw \5 ; label string
dw \6 ; value name function
db \7 ; is hex value?
ENDM
DEF PAGED_VALUE_SIZE EQU 10
DebugRoom_EditPagedValues:
xor a
ld [wDebugRoomCurPage], a
ld [wDebugRoomCurValue], a
ld a, [hli]
ld [wDebugRoomAFunction], a
ld a, [hli]
ld [wDebugRoomAFunction+1], a
ld a, [hli]
ld [wDebugRoomSelectFunction], a
ld a, [hli]
ld [wDebugRoomSelectFunction+1], a
ld a, [hli]
ld [wDebugRoomStartFunction], a
ld a, [hli]
ld [wDebugRoomStartFunction+1], a
ld a, [hli]
ld [wDebugRoomAutoFunction], a
ld a, [hli]
ld [wDebugRoomAutoFunction+1], a
ld a, [hli]
ld [wDebugRoomPageCount], a
ld a, l
ld [wDebugRoomPagesPointer], a
ld a, h
ld [wDebugRoomPagesPointer+1], a
ld hl, hInMenu
ld a, [hl]
push af
ld [hl], TRUE
call ClearBGPalettes
hlcoord 0, 0
ld b, SCREEN_HEIGHT - 2
ld c, SCREEN_WIDTH - 2
call Textbox
hlcoord 8, 17
ld de, DebugRoom_PageString
call PlaceString
call DebugRoom_InitializePagedValues
xor a
call DebugRoom_PrintPage
ld a, "▶"
call DebugRoom_ShowHideCursor
xor a
ldh [hJoyLast], a
xor a
ld [wDebugRoomCurPage], a
inc a
ldh [hBGMapMode], a
call WaitBGMap
ld b, SCGB_DIPLOMA
call GetSGBLayout
call SetPalettes
.resume
call DelayFrame
call JoyTextDelay
ldh a, [hJoyLast]
bit 1, a
jr nz, .done
ld hl, .continue
push hl
rra ; A_BUTTON_F?
jr c, DebugRoom_PagedValuePressedA
rra ; skip B_BUTTON_F
rra ; SELECT_F?
jr c, DebugRoom_PagedValuePressedSelect
rra ; START_F?
jr c, DebugRoom_PagedValuePressedStart
rra ; D_RIGHT_F?
jp c, DebugRoom_IncrementPagedValue
rra ; D_LEFT_F?
jp c, DebugRoom_DecrementPagedValue
rra ; D_UP_F?
jp c, DebugRoom_PrevPagedValue
rra ; D_DOWN_F?
jp c, DebugRoom_NextPagedValue
pop hl
.continue
; call wDebugRoomAutoFunction if it's not null, then jump to .resume
ld hl, .resume
push hl
ld a, [wDebugRoomAutoFunction]
ld l, a
ld a, [wDebugRoomAutoFunction+1]
ld h, a
or l
ret z
jp hl
.done
pop af
ldh [hInMenu], a
scf
ret
DebugRoom_PagedValuePressedA:
ld hl, wDebugRoomAFunction
jr _CallNonNullPointer
DebugRoom_PagedValuePressedSelect:
ld hl, wDebugRoomSelectFunction
jr _CallNonNullPointer
DebugRoom_PagedValuePressedStart:
ld hl, wDebugRoomStartFunction
; fallthrough
_CallNonNullPointer:
ld a, [hli]
ld h, [hl]
ld l, a
or h
ret z
jp hl
DebugRoom_PageString:
db " P @"
DebugRoom_IncrementPagedValue:
call DebugRoom_GetCurPagedValuePointer
ld e, [hl] ; de = value address
inc hl
ld d, [hl]
inc hl
inc hl
ld a, [de] ; a = max value
cp [hl]
ret z
inc a
ld [de], a
call DebugRoom_PrintPageBValueC
ret
DebugRoom_DecrementPagedValue:
call DebugRoom_GetCurPagedValuePointer
ld e, [hl] ; de = value address
inc hl
ld d, [hl]
inc hl
ld a, [de] ; a = min value
cp [hl]
ret z
dec a
ld [de], a
call DebugRoom_PrintPageBValueC
ret
DebugRoom_NextPage:
ld a, [wDebugRoomPageCount]
ld c, a
ld a, [wDebugRoomCurPage]
inc a
cp c
jr c, .ok
xor a
.ok
ld [wDebugRoomCurPage], a
call DebugRoom_PrintPage
ld a, [wDebugRoomCurPage]
call DebugRoom_GetNthPagePointer
ld a, [wDebugRoomCurValue]
cp [hl]
jr c, .skip
ld a, [hl]
dec a
ld [wDebugRoomCurValue], a
.skip
ld a, "▶"
call DebugRoom_ShowHideCursor
ret
DebugRoom_PrevPage:
ld a, [wDebugRoomCurPage]
or a
jr nz, .ok
ld a, [wDebugRoomPageCount]
.ok
dec a
ld [wDebugRoomCurPage], a
call DebugRoom_PrintPage
ld a, [wDebugRoomCurPage]
call DebugRoom_GetNthPagePointer
ld a, [wDebugRoomCurValue]
cp [hl]
jr c, .skip
ld a, [hl]
dec a
ld [wDebugRoomCurValue], a
.skip
ld a, "▶"
call DebugRoom_ShowHideCursor
ret
DebugRoom_NextPagedValue:
ld a, " "
call DebugRoom_ShowHideCursor
ld a, [wDebugRoomCurPage]
call DebugRoom_GetNthPagePointer
ld a, [wDebugRoomCurValue]
inc a
cp [hl] ; incremented value < paged_value count?
jr c, DebugRoom_UpdateValueCursor
xor a
ld [wDebugRoomCurValue], a
jr DebugRoom_NextPage
DebugRoom_UpdateValueCursor:
ld [wDebugRoomCurValue], a
ld a, "▶"
call DebugRoom_ShowHideCursor
ret
DebugRoom_PrevPagedValue:
ld a, " "
call DebugRoom_ShowHideCursor
ld a, [wDebugRoomCurValue]
or a ; pre-decremented value > 0?
jr nz, .decrement
ld a, -1
ld [wDebugRoomCurValue], a
jr DebugRoom_PrevPage
.decrement:
dec a
jr DebugRoom_UpdateValueCursor
DebugRoom_GetNthPagePointer:
; Input: a = page index
; Output: hl = pointer to paged_data list
ld h, 0
ld l, a
add hl, hl
ld a, [wDebugRoomPagesPointer]
ld e, a
ld a, [wDebugRoomPagesPointer+1]
ld d, a
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
ret
_DebugRoom_GetPageBValueCPointer:
push bc
ld a, b
call DebugRoom_GetNthPagePointer
pop bc
inc hl
ld a, c
ld bc, PAGED_VALUE_SIZE
call AddNTimes
ret
DebugRoom_GetCurPagedValuePointer:
ld a, [wDebugRoomCurPage]
ld b, a
ld a, [wDebugRoomCurValue]
ld c, a
jr _DebugRoom_GetPageBValueCPointer
DebugRoom_ShowHideCursor:
push af
hlcoord 1, 1
ld bc, SCREEN_WIDTH * 2
ld a, [wDebugRoomCurValue]
call AddNTimes
pop af
ld [hl], a
ret
DebugRoom_InitializePagedValues:
; Load the initial values for all pages of the current paged value header
ld a, [wDebugRoomPageCount]
.page_loop
dec a
push af
call .InitializePage
pop af
jr nz, .page_loop
ret
.InitializePage:
; Load the initial values for page a
ld b, a
ld h, 0
ld l, a
add hl, hl
ld a, [wDebugRoomPagesPointer]
ld e, a
ld a, [wDebugRoomPagesPointer+1]
ld d, a
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
ld c, [hl] ; c = paged_value count
.value_loop
push bc
dec c
call .InitializeValue
pop bc
dec c
jr nz, .value_loop
ret
.InitializeValue:
; Load the initial value for page b, value c
ld h, 0
ld l, b
add hl, hl
ld a, [wDebugRoomPagesPointer]
ld e, a
ld a, [wDebugRoomPagesPointer+1]
ld d, a
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
inc hl ; skip the paged_value count
ld a, c
push bc
ld bc, PAGED_VALUE_SIZE
call AddNTimes
pop bc
ld e, [hl] ; de = value address
inc hl
ld d, [hl]
inc hl
inc hl
inc hl
ld a, [hl] ; a = initial value
ld [de], a
ret
DebugRoom_PrintPage:
push af
hlcoord 10, 17
add "1"
ld [hl], a
hlcoord 1, 1
lb bc, SCREEN_HEIGHT - 2, SCREEN_WIDTH - 2
call ClearBox
pop af
ld b, a
ld h, 0
ld l, a
add hl, hl
ld a, [wDebugRoomPagesPointer]
ld e, a
ld a, [wDebugRoomPagesPointer+1]
ld d, a
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
ld c, [hl] ; c = paged_value count
.loop
push bc
dec c
call DebugRoom_PrintPagedValue
pop bc
dec c
jr nz, .loop
ret
DebugRoom_PrintPageBValueC:
ld a, [wDebugRoomCurPage]
ld b, a
ld a, [wDebugRoomCurValue]
ld c, a
jr DebugRoom_PrintPagedValue
DebugRoom_PrintPagedValue:
; Print the value for page b, value c
ld h, 0
ld l, b
add hl, hl
ld a, [wDebugRoomPagesPointer]
ld e, a
ld a, [wDebugRoomPagesPointer+1]
ld d, a
add hl, de
ld a, [hli]
ld h, [hl]
ld l, a
inc hl ; skip the paged_value count
ld a, c
push bc
ld bc, PAGED_VALUE_SIZE
call AddNTimes
pop bc
ld e, [hl] ; de = value address
inc hl
ld d, [hl]
inc hl
push de
inc hl
inc hl
inc hl
ld e, [hl] ; de = label string
inc hl
ld d, [hl]
inc hl
push hl
hlcoord 2, 1
ld a, c
ld bc, SCREEN_WIDTH * 2
call AddNTimes
push hl
call PlaceString
pop hl
ld bc, SCREEN_WIDTH - 7
add hl, bc
pop bc ; pushed hl
pop de
push de
push bc
inc bc
inc bc
ld a, [bc] ; a = is hex value?
or a
jr nz, .hex
lb bc, PRINTNUM_LEADINGZEROS | 1, 3
call PrintNum
jr .printed
.hex
ld c, 1
call PrintHexNumber
ld [hl], "H"
inc hl
.printed
ld bc, 6
add hl, bc
ld b, h
ld c, l
pop hl
pop de
ld a, [hli] ; hl = value name function
ld h, [hl]
ld l, a
or h
ret z
ld a, [de]
jp hl
DebugRoom_JoyWaitABSelect:
.loop
call GetJoypad
ldh a, [hJoyPressed]
and A_BUTTON | B_BUTTON | SELECT
jr z, .loop
ret
DebugRoomMenu_ItemGet:
ld hl, .PagedValuesHeader
call DebugRoom_EditPagedValues
ret
.PagedValuesHeader:
dw NULL ; A function
dw NULL ; Select function
dw DebugRoom_SaveItem ; Start function
dw NULL ; Auto function
db 1 ; # pages
dw DebugRoomMenu_ItemGet_Page1Values
DebugRoom_SaveItem:
call YesNoBox
ret c
ld a, BANK(sPlayerData)
call OpenSRAM
ld hl, sPlayerData + (wPCItems - wPlayerData)
ld a, [wDebugRoomItemID]
ld c, a
.loop1
ld a, [hl]
cp c
jr z, .found
cp -1
jr z, .not_found
inc hl
inc hl
jr .loop1
.found
inc hl
ld a, [wDebugRoomItemQuantity]
add [hl]
cp MAX_ITEM_STACK + 1
jr c, .max
ld a, MAX_ITEM_STACK
.max
ld [hl], a
ld hl, .ItemNumberAddedText
jr .done
.not_found
ld a, [sPlayerData + (wNumPCItems - wPlayerData)]
cp MAX_PC_ITEMS
jr nc, .full
inc a
ld [sPlayerData + (wNumPCItems - wPlayerData)], a
ld a, [wDebugRoomItemID]
ld [hli], a
ld a, [wDebugRoomItemQuantity]
ld [hli], a
ld [hl], -1 ; terminator
ld hl, .CreatedNewItemText
jr .done
.full
ld hl, .StockFullText
.done
call CloseSRAM
call MenuTextbox
call DebugRoom_JoyWaitABSelect
call CloseWindow
call DebugRoom_SaveChecksum
ret
.ItemNumberAddedText:
text "Item number added!"
done
.CreatedNewItemText:
text "Created new item!"
done
.StockFullText:
text "Stock full!!"
done
DebugRoom_PrintItemName:
ld [wNamedObjectIndex], a
push bc
call GetItemName
pop hl
push hl
lb bc, 1, 12
call ClearBox
pop hl
ld de, wStringBuffer1
call PlaceString
ret
DebugRoomMenu_ItemGet_Page1Values:
db 2
paged_value wDebugRoomItemID, 1, NUM_POKEMON, MASTER_BALL, .ItemNameString, DebugRoom_PrintItemName, FALSE
paged_value wDebugRoomItemQuantity, 1, 99, 1, .NumberString, NULL, FALSE
.ItemNameString: db "ITEM NAME@"
.NumberString: db "NUMBER@"
DebugRoomMenu_PokemonGet:
ld hl, .PagedValuesHeader
call DebugRoom_EditPagedValues
ret
.PagedValuesHeader:
dw NULL ; A function
dw NULL ; Select function
dw DebugRoom_SavePokemon ; Start function
dw NULL ; Auto function
db 4 ; # pages
dw DebugRoomMenu_PokemonGet_Page1Values
dw DebugRoomMenu_PokemonGet_Page2Values
dw DebugRoomMenu_PokemonGet_Page3Values
dw DebugRoomMenu_PokemonGet_Page4Values
DebugRoom_SavePokemon:
call YesNoBox
ret c
call DebugRoom_UpdateExpForLevel
ld a, [wDebugRoomMonBox]
dec a
ld b, a
add a
add b
ld h, 0
ld l, a
ld de, DebugRoom_BoxAddresses
add hl, de
ld a, [hli]
call OpenSRAM
ld a, [hli]
ld h, [hl]
ld l, a
ld a, [hl]
cp MONS_PER_BOX
jr nc, .full
; update count and species list
push hl
inc [hl]
inc hl
ld d, 0
ld e, a
add hl, de
ld a, [wDebugRoomMonSpecies]
ld [hli], a
ld [hl], -1
pop hl
; skip count and species list
ld bc, 2 + MONS_PER_BOX
add hl, bc
; update Nth box mon
push de
push hl
ld a, e
ld bc, BOXMON_STRUCT_LENGTH
call AddNTimes
ld d, h
ld e, l
ld hl, wDebugRoomMon
ld bc, BOXMON_STRUCT_LENGTH
call CopyBytes
pop hl
pop de
; skip box mons
ld bc, BOXMON_STRUCT_LENGTH * MONS_PER_BOX
add hl, bc
; update Nth OT name
push de
push hl
ld a, e
ld bc, NAME_LENGTH
call AddNTimes
ld d, h
ld e, l
ld hl, .OTString
ld bc, NAME_LENGTH
call CopyBytes
pop hl
pop de
; skip OT names
ld bc, NAME_LENGTH * MONS_PER_BOX
add hl, bc
; update Nth nickname
push de
push hl
ld a, e
ld bc, MON_NAME_LENGTH
call AddNTimes
ld d, h
ld e, l
ld hl, .NicknameString
ld bc, MON_NAME_LENGTH
call CopyBytes
pop hl
pop de
call CloseSRAM
ld hl, .CompletedText
call MenuTextbox
call DebugRoom_JoyWaitABSelect
call CloseWindow
ret
.full
call CloseSRAM
ld hl, .BoxIsFullText
call MenuTextbox
call DebugRoom_JoyWaitABSelect
call CloseWindow
ret
.OTString:
db "DEBUG▶OT@"
.NicknameString:
db "DEBUG▶<PK><MN>@"
.CompletedText:
text "COMPLETED!"
done
.BoxIsFullText:
text "BOX IS FULL!"
done
DebugRoom_PrintPokemonName:
ld [wNamedObjectIndex], a
push bc
call GetPokemonName
jr _DebugRoom_FinishGetName
DebugRoom_PrintItemName2:
ld [wNamedObjectIndex], a
push bc
call GetItemName
jr _DebugRoom_FinishGetName
DebugRoom_PrintMoveName:
ld [wNamedObjectIndex], a
push bc
call GetMoveName
jr _DebugRoom_FinishGetName
_DebugRoom_FinishGetName:
pop hl
push hl
lb bc, 1, 12
call ClearBox
pop hl
ld de, wStringBuffer1
call PlaceString
ret
DebugRoom_UpdateExpForLevel:
ld hl, BaseData + BASE_GROWTH_RATE
ld bc, BASE_DATA_SIZE
ld a, [wDebugRoomMonSpecies]
dec a
call AddNTimes
ld a, BANK(BaseData)
call GetFarByte
ld [wBaseGrowthRate], a
ld a, [wDebugRoomMonLevel]
ld d, a
farcall CalcExpAtLevel
ld hl, wDebugRoomMonExp
ldh a, [hProduct + 1]
ld [hli], a
ldh a, [hProduct + 2]
ld [hli], a
ldh a, [hProduct + 3]
ld [hl], a
ret
DebugRoomMenu_PokemonGet_Page1Values:
db 8
paged_value wDebugRoomMonSpecies, 1, NUM_POKEMON, BULBASAUR, DebugRoom_BoxStructStrings.Pokemon, DebugRoom_PrintPokemonName, FALSE
paged_value wDebugRoomMonItem, 1, $ff, MASTER_BALL, DebugRoom_BoxStructStrings.Item, DebugRoom_PrintItemName2, FALSE
paged_value wDebugRoomMonMoves+0, 1, NUM_ATTACKS, POUND, DebugRoom_BoxStructStrings.Move1, DebugRoom_PrintMoveName, FALSE
paged_value wDebugRoomMonMoves+1, 1, NUM_ATTACKS, POUND, DebugRoom_BoxStructStrings.Move2, DebugRoom_PrintMoveName, FALSE
paged_value wDebugRoomMonMoves+2, 1, NUM_ATTACKS, POUND, DebugRoom_BoxStructStrings.Move3, DebugRoom_PrintMoveName, FALSE
paged_value wDebugRoomMonMoves+3, 1, NUM_ATTACKS, POUND, DebugRoom_BoxStructStrings.Move4, DebugRoom_PrintMoveName, FALSE
paged_value wDebugRoomMonID+0, $00, $ff, HIGH(1234), DebugRoom_BoxStructStrings.ID0, NULL, FALSE
paged_value wDebugRoomMonID+1, $00, $ff, LOW(1234), DebugRoom_BoxStructStrings.ID1, NULL, FALSE
DebugRoomMenu_PokemonGet_Page2Values:
db 8
paged_value wDebugRoomMonHPExp+0, $00, $ff, $00, DebugRoom_BoxStructStrings.HPExp0, NULL, FALSE
paged_value wDebugRoomMonHPExp+1, $00, $ff, $00, DebugRoom_BoxStructStrings.HPExp1, NULL, FALSE
paged_value wDebugRoomMonAtkExp+0, $00, $ff, $00, DebugRoom_BoxStructStrings.AttkExp0, NULL, FALSE
paged_value wDebugRoomMonAtkExp+1, $00, $ff, $00, DebugRoom_BoxStructStrings.AttkExp1, NULL, FALSE
paged_value wDebugRoomMonDefExp+0, $00, $ff, $00, DebugRoom_BoxStructStrings.DfnsExp0, NULL, FALSE
paged_value wDebugRoomMonDefExp+1, $00, $ff, $00, DebugRoom_BoxStructStrings.DfnsExp1, NULL, FALSE
paged_value wDebugRoomMonSpdExp+0, $00, $ff, $00, DebugRoom_BoxStructStrings.SpeedExp0, NULL, FALSE
paged_value wDebugRoomMonSpdExp+1, $00, $ff, $00, DebugRoom_BoxStructStrings.SpeedExp1, NULL, FALSE
DebugRoomMenu_PokemonGet_Page3Values:
db 8
paged_value wDebugRoomMonSpcExp+0, $00, $ff, $00, DebugRoom_BoxStructStrings.SpclExp0, NULL, FALSE
paged_value wDebugRoomMonSpcExp+1, $00, $ff, $00, DebugRoom_BoxStructStrings.SpclExp1, NULL, FALSE
paged_value wDebugRoomMonDVs+0, $00, $ff, $00, DebugRoom_BoxStructStrings.PowerRnd0, NULL, TRUE
paged_value wDebugRoomMonDVs+1, $00, $ff, $00, DebugRoom_BoxStructStrings.PowerRnd1, NULL, TRUE
paged_value wDebugRoomMonPP+0, $00, $ff, $00, DebugRoom_BoxStructStrings.PP1, NULL, FALSE
paged_value wDebugRoomMonPP+1, $00, $ff, $00, DebugRoom_BoxStructStrings.PP2, NULL, FALSE
paged_value wDebugRoomMonPP+2, $00, $ff, $00, DebugRoom_BoxStructStrings.PP3, NULL, FALSE
paged_value wDebugRoomMonPP+3, $00, $ff, $00, DebugRoom_BoxStructStrings.PP4, NULL, FALSE
DebugRoomMenu_PokemonGet_Page4Values:
db 6
paged_value wDebugRoomMonHappiness, $00, $ff, BASE_HAPPINESS, DebugRoom_BoxStructStrings.Friend, NULL, FALSE
paged_value wDebugRoomMonPokerusStatus, $00, $ff, $00, DebugRoom_BoxStructStrings.Pokerus, NULL, TRUE
paged_value wDebugRoomMonCaughtData+0, $00, $ff, $00, DebugRoom_BoxStructStrings.NoUse0, NULL, FALSE
paged_value wDebugRoomMonCaughtData+1, $00, $ff, $00, DebugRoom_BoxStructStrings.NoUse1, NULL, FALSE
paged_value wDebugRoomMonLevel, 1, MAX_LEVEL, $05, DebugRoom_BoxStructStrings.Level, NULL, FALSE
paged_value wDebugRoomMonBox, 1, NUM_BOXES, $0e, DebugRoom_BoxStructStrings.SendBox, NULL, FALSE
DebugRoom_BoxStructStrings:
.Pokemon: db "#MON@"
.Item: db "ITEM@"
.Move1: db "MOVE 1@"
.Move2: db "MOVE 2@"
.Move3: db "MOVE 3@"
.Move4: db "MOVE 4@"
.ID0: db "ID[0]@"
.ID1: db "ID[1]@"
.BaseExp0: db "BASE EXP[0]@" ; unreferenced
.BaseExp1: db "BASE EXP[1]@" ; unreferenced
.BaseExp2: db "BASE EXP[2]@" ; unreferenced
.HPExp0: db "HP EXP[0]@"
.HPExp1: db "HP EXP[1]@"
.AttkExp0: db "ATTK EXP[0]@"
.AttkExp1: db "ATTK EXP[1]@"
.DfnsExp0: db "DFNS EXP[0]@"
.DfnsExp1: db "DFNS EXP[1]@"
.SpeedExp0: db "SPEED EXP[0]@"
.SpeedExp1: db "SPEED EXP[1]@"
.SpclExp0: db "SPCL EXP[0]@"
.SpclExp1: db "SPCL EXP[1]@"
.PowerRnd0: db "POWER RND[0]<LF> RARE:--1-1010@"
.PowerRnd1: db "POWER RND[1]<LF> RARE:10101010@"
.PP1: db "PP 1@"
.PP2: db "PP 2@"
.PP3: db "PP 3@"
.PP4: db "PP 4@"
.Friend: db "FRIEND@"
.Pokerus: db "#RUS@"
.NoUse0: db "NO USE[0]@"
.NoUse1: db "NO USE[1]@"
.Level: db "LEVEL@"
.SendBox: db "SEND BOX@"
DebugRoom_BoxAddresses:
table_width 3, DebugRoom_BoxAddresses
for n, 1, NUM_BOXES + 1
dba sBox{d:n}
endr
assert_table_length NUM_BOXES
DebugRoomMenu_RTCEdit:
ld hl, .PagedValuesHeader
call DebugRoom_EditPagedValues
ret
.PagedValuesHeader:
dw NULL ; A function
dw NULL ; Select function
dw DebugRoom_SaveRTC ; Start function
dw DebugRoomMenu_RTCEdit_UpdateClock ; Auto function
db 1 ; # pages
dw DebugRoomMenu_RTCEdit_Page1Values
DebugRoom_SaveRTC:
call YesNoBox
ret c
ld hl, wDebugRoomRTCSec
call DebugRoom_SetClock
ret
DebugRoomMenu_RTCEdit_UpdateClock:
ld hl, wDebugRoomRTCCurSec
call DebugRoom_GetClock
ld de, DebugRoom_DayHTimeString
hlcoord 3, 14
call PlaceString
ld a, [wDebugRoomRTCCurDay + 0]
ld h, a
ld a, [wDebugRoomRTCCurDay + 1]
ld l, a
push hl
ld hl, sp+0
ld d, h
ld e, l
hlcoord 7, 14
ld c, 2
call PrintHexNumber
pop hl
hlcoord 8, 15
ld de, wDebugRoomRTCCurHour
lb bc, PRINTNUM_LEADINGZEROS | 1, 2
call PrintNum
ld [hl], ":"
inc hl
ld de, wDebugRoomRTCCurMin
lb bc, PRINTNUM_LEADINGZEROS | 1, 2
call PrintNum
ld [hl], ":"
inc hl
ld de, wDebugRoomRTCCurSec
lb bc, PRINTNUM_LEADINGZEROS | 1, 2
call PrintNum
ret
DebugRoom_DayHTimeString:
db "DAY H<LF>TIME@"
DebugRoom_GetClock:
ld a, SRAM_ENABLE
ld [MBC3SRamEnable], a
xor a
ld [MBC3LatchClock], a
inc a
ld [MBC3LatchClock], a
ld b, RTC_DH - RTC_S + 1
ld c, RTC_S
.loop
ld a, c
ld [MBC3SRamBank], a
ld a, [MBC3RTC]
ld [hli], a
inc c
dec b
jr nz, .loop
call CloseSRAM
ret
DebugRoom_SetClock:
ld a, SRAM_ENABLE
ld [MBC3SRamEnable], a
ld b, RTC_DH - RTC_S + 1
ld c, RTC_S
.loop
ld a, c
ld [MBC3SRamBank], a
ld a, [hli]
ld [MBC3RTC], a
inc c
dec b
jr nz, .loop
call CloseSRAM
ret
DebugRoomMenu_RTCEdit_Page1Values:
db 5
paged_value wDebugRoomRTCSec, 0, 60 - 1, 0, .SecondString, NULL, FALSE
paged_value wDebugRoomRTCMin, 0, 60 - 1, 0, .MinuteString, NULL, FALSE
paged_value wDebugRoomRTCHour, 0, 24 - 1, 0, .HourString, NULL, FALSE
paged_value wDebugRoomRTCDay+0, $00, $ff, 0, .DayLString, NULL, TRUE
paged_value wDebugRoomRTCDay+1, $00, $ff, 0, .DayHString, NULL, TRUE
.SecondString: db "SECOND@"
.MinuteString: db "MINUTE@"
.HourString: db "HOUR@"
.DayLString: db "DAY L@"
.DayHString: db "DAY H<LF> BIT0:DAY MSB<LF> BIT6:HALT<LF> BIT7:DAY CARRY@"
DebugRoomMenu_HaltChkClr:
call YesNoBox
ret c
ld a, BANK(sRTCHaltCheckValue)
call OpenSRAM
xor a
ld hl, sRTCHaltCheckValue
ld [hli], a
ld [hl], a
call CloseSRAM
call DebugRoom_PrintRTCHaltChk
ret
DebugRoom_PrintRTCHaltChk:
hlcoord 16, 9
ld de, .RTCString
call PlaceString
ld a, BANK(sRTCHaltCheckValue)
ld hl, sRTCHaltCheckValue
call OpenSRAM
ld a, [hli]
ld h, [hl]
ld l, a
call CloseSRAM
ld de, .HaltString
ld a, h
cp HIGH(RTC_HALT_VALUE)
jr nz, .ok
ld a, l
cp LOW(RTC_HALT_VALUE)
jr z, .done
.ok
ld de, .OKString
.done
hlcoord 16, 10
call PlaceString
ret
.RTCString:
db "RTC:@"
.OKString:
db " OK@"
.HaltString:
db "HALT@"
DebugRoomMenu_GBIDSet:
ld hl, .PagedValuesHeader
call DebugRoom_EditPagedValues
ret
.PagedValuesHeader:
dw NULL ; A function
dw NULL ; Select function
dw DebugRoom_SaveGBID ; Start function
dw NULL ; Auto function
db 1 ; # pages
dw DebugRoomMenu_GBIDSet_Page1Values
DebugRoom_SaveGBID:
call YesNoBox
ret c
ld a, BANK(sPlayerData)
call OpenSRAM
ld hl, sPlayerData + (wPlayerID - wPlayerData)
ld a, [wDebugRoomGBID + 0]
ld [hli], a
ld a, [wDebugRoomGBID + 1]
ld [hli], a
call CloseSRAM
call DebugRoom_SaveChecksum
ret
DebugRoomMenu_GBIDSet_Page1Values:
db 2
paged_value wDebugRoomGBID+0, $00, $ff, $00, .GBID0String, NULL, TRUE
paged_value wDebugRoomGBID+1, $00, $ff, $00, .GBID1String, NULL, TRUE
.GBID0String: db "GB ID [0]@"
.GBID1String: db "GB ID [1]@"
DebugRoomMenu_BtlRecClr:
call YesNoBox
ret c
ld a, BANK(sLinkBattleStats)
call OpenSRAM
xor a
ld hl, sLinkBattleStats
ld bc, sLinkBattleStatsEnd - sLinkBattleStats
call ByteFill
call CloseSRAM
ret
DebugRoomMenu_HOFClear:
call YesNoBox
ret c
ld a, BANK(sPlayerData)
call OpenSRAM
ld hl, sPlayerData + (wHallOfFameCount - wPlayerData)
ld [hl], 0
xor a
ld hl, sHallOfFame
ld bc, sHallOfFameEnd - sHallOfFame
call ByteFill
call CloseSRAM
call DebugRoom_SaveChecksum
ret
ComputeROMChecksum:
ld de, 0
call .ComputeROM0Checksum
ld c, $01 ; first bank
.loop:
push bc
push de
ld a, c
cpl
inc a
add $80
ld de, wDebugRoomCurChecksumBank
ld [de], a
hlcoord 16, 16
ld c, 1
call PrintHexNumber
ld [hl], "h"
pop de
pop bc
call ComputeROMXChecksum
inc c
ld a, c
cp $80 ; number of banks
jr c, .loop
ld a, d
ld [wDebugRoomROMChecksum + 0], a
ld a, e
ld [wDebugRoomROMChecksum + 1], a
ret
.AddAtoDE:
add e
ld e, a
ld a, d
adc 0
ld d, a
ret
.ComputeROM0Checksum:
ld hl, $0000 ; ROM0 start
.rom0_loop
ld a, [hli]
call .AddAtoDE
ld a, h
cp $40 ; HIGH(ROM0 end)
jr c, .rom0_loop
ret
.ComputeROMXChecksum: ; unreferenced
ld hl, $4000 ; ROMX start
.romx_loop
ld a, c
call GetFarByte
inc hl
call .AddAtoDE
ld a, h
cp $80 ; HIGH(ROMX end)
jr c, .romx_loop
ret
DebugRoom_PrintROMChecksum: ; unreferenced
hlcoord 16, 0
ld de, .SumString
call PlaceString
hlcoord 16, 1
ld de, wDebugRoomROMChecksum
ld c, 2
call PrintHexNumber
ret
.SumString:
db "SUM:@"
DebugRoomMenu_ROMChecksum:
ld hl, .WaitText
call MenuTextbox
call ComputeROMChecksum
call CloseWindow
ld hl, .ROMChecksumText
call MenuTextbox
hlcoord 14, 14
ld de, wDebugRoomROMChecksum
ld c, 2
call PrintHexNumber
ld [hl], "h"
call DebugRoom_JoyWaitABSelect
call CloseWindow
ret
.WaitText:
text "Wait..."
done
.ROMChecksumText:
text "ROM CHECKSUM:"
next ""
done
DebugRoomMenu_BTBugPoke:
ld a, BANK(sIsBugMon)
call OpenSRAM
ld a, [sIsBugMon]
call CloseSRAM
or a
jr nz, .bug_mon
ld hl, .NoBugMonText
call MenuTextbox
call DebugRoom_JoyWaitABSelect
call CloseWindow
ret
.NoBugMonText:
text "No bug #MON."
done
.bug_mon:
ld hl, .ItsBugMonText
call MenuTextbox
ld a, BANK(sIsBugMon)
call OpenSRAM
hlcoord 4, 16
ld de, sIsBugMon
ld c, 1
call PrintHexNumber
ld [hl], "h"
call YesNoBox
jr c, .done
xor a
ld [sIsBugMon], a
.done
call CloseSRAM
call CloseWindow
ret
.ItsBugMonText:
text "It'", "s bug #MON!"
next "No. Clear flag?"
done
PrintHexNumber:
; Print the c-byte value from de to hl as hexadecimal digits.
.loop
push bc
call .HandleByte
pop bc
dec c
jr nz, .loop
ret
.HandleByte:
ld a, [de]
swap a
and $f
call .PrintDigit
ld [hli], a
ld a, [de]
and $f
call .PrintDigit
ld [hli], a
inc de
ret
.PrintDigit:
ld bc, .HexDigits
add c
ld c, a
ld a, 0
adc b
ld b, a
ld a, [bc]
ret
.HexDigits:
db "0123456789ABCDEF"