Merge branch 'master' of https://github.com/pret/pokered

2026-03-21 17:34:31 -05:00 · 2025-11-12 17:56:10 -06:00 · 2025-11-12 17:56:10 -06:00 · 324ae167d1
commit 324ae167d1
parent bb7984e70b 5943b96cf6
72 changed files with 499 additions and 446 deletions
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@ -16,7 +16,7 @@ jobs:
        uses: actions/checkout@master
        with:
          path: rgbds
-          ref: v0.9.3
+          ref: v1.0.0
          repository: gbdev/rgbds

      - name: Install rgbds
--- a/.rgbds-version
+++ b/.rgbds-version
@ -1 +1 @@
-0.9.3
+1.0.0
--- a/INSTALL.md
+++ b/INSTALL.md
@ -42,9 +42,9 @@ Run setup and leave the default settings. At the "**Select Packages**" step, cho

 Double click on the text that says "**Skip**" next to each package to select the most recent version to install.

-Then follow the [**rgbds** install instructions](https://rgbds.gbdev.io/install#pre-built) for Windows with Cygwin to install **rgbds 0.9.3**.
+Then follow the [**rgbds** install instructions](https://rgbds.gbdev.io/install#pre-built) for Windows with Cygwin to install **rgbds 1.0.0**.

-**Note:** If you already have an installed rgbds older than 0.9.3, you will need to update to 0.9.3. Ignore this if you have never installed rgbds before. If a version newer than 0.9.3 does not work, try downloading 0.9.3.
+**Note:** If you already have an installed rgbds older than 1.0.0, you will need to update to 1.0.0. Ignore this if you have never installed rgbds before. If a version newer than 1.0.0 does not work, try downloading 1.0.0.

 Now open the **Cygwin terminal** and enter the following commands.

@ -67,7 +67,7 @@ Install [**Homebrew**](https://brew.sh/). Follow the official instructions.

 Open **Terminal** and prepare to enter commands.

-Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#pre-built) for macOS to install **rgbds 0.9.3**.
+Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#pre-built) for macOS to install **rgbds 1.0.0**.

 Now you're ready to [build **pokeyellow**](#build-pokeyellow).

@ -84,7 +84,7 @@ To install the software required for **pokeyellow**:
 sudo apt-get install make gcc git
 ```

-Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.

 ### OpenSUSE

@ -94,7 +94,7 @@ To install the software required for **pokeyellow**:
 sudo zypper install make gcc git
 ```

-Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.

 ### Arch Linux

@ -104,7 +104,7 @@ To install the software required for **pokeyellow**:
 sudo pacman -S make gcc git rgbds
 ```

-If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.

 ### Termux

@ -120,7 +120,7 @@ To install **rgbds**:
 pkg install rgbds
 ```

-If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+If you want to compile and install **rgbds** yourself instead, then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.

 ### Other distros

@ -131,7 +131,7 @@ If your distro is not listed here, try to find the required software in its repo
 - `git`
 - `rgbds`

-If `rgbds` is not available, you'll need to follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 0.9.3** from source.
+If `rgbds` is not available, you'll need to follow the [**rgbds** instructions](https://rgbds.gbdev.io/install#building-from-source) to build **rgbds 1.0.0** from source.

 Now you're ready to [build **pokeyellow**](#build-pokeyellow).

@ -153,8 +153,8 @@ make

 ### Build with a local rgbds version

-If you have different projects that require different versions of `rgbds`, it might not be convenient to install rgbds 0.9.3 globally. Instead, you can put its files in a directory within pokeyellow, such as `pokeyellow/rgbds-0.9.3/`. Then specify it when you run `make`:
+If you have different projects that require different versions of `rgbds`, it might not be convenient to install rgbds 1.0.0 globally. Instead, you can put its files in a directory within pokeyellow, such as `pokeyellow/rgbds-1.0.0/`. Then specify it when you run `make`:

 ```bash
-make RGBDS=rgbds-0.9.3/
+make RGBDS=rgbds-1.0.0/
 ```
--- a/27
+++ b/27
@ -36,6 +36,11 @@ RGBFIX  ?= $(RGBDS)rgbfix
 RGBGFX  ?= $(RGBDS)rgbgfx
 RGBLINK ?= $(RGBDS)rgblink

+RGBASMFLAGS  ?= -Weverything -Wtruncation=1
+RGBLINKFLAGS ?= -Weverything -Wtruncation=1
+RGBFIXFLAGS  ?= -Weverything
+RGBGFXFLAGS  ?= -Weverything
+

 ### Build targets

@ -82,7 +87,7 @@ tools:
 	$(MAKE) -C tools/


-RGBASMFLAGS = -Q8 -P includes.asm -Weverything -Wtruncation=1
+RGBASMFLAGS += -Q8 -P includes.asm
 # Create a sym/map for debug purposes if `make` run with `DEBUG=1`
 ifeq ($(DEBUG),1)
 RGBASMFLAGS += -E
@ -120,15 +125,19 @@ $(foreach obj, $(pokeyellow_vc_obj), $(eval $(call DEP,$(obj),$(obj:_vc.o=.asm))
 endif


-pokeyellow_pad       = 0x00
-pokeyellow_debug_pad = 0xff
-pokeyellow_vc_pad    = 0x00
+RGBLINKFLAGS += -d
+pokeyellow.gbc:       RGBLINKFLAGS += -p 0x00
+pokeyellow_debug.gbc: RGBLINKFLAGS += -p 0xff
+pokeyellow_vc.gbc:    RGBLINKFLAGS += -p 0x00

-opts = -cjsv -k 01 -l 0x33 -m MBC5+RAM+BATTERY -p 0 -r 03 -t "POKEMON YELLOW"
+RGBFIXFLAGS += -cjsv -k 01 -l 0x33 -m MBC5+RAM+BATTERY -p 0 -r 03 -t "POKEMON YELLOW"
+pokeyellow.gbc:       RGBFIXFLAGS += -p 0x00
+pokeyellow_debug.gbc: RGBFIXFLAGS += -p 0xff
+pokeyellow_vc.gbc:    RGBFIXFLAGS += -p 0x00

 %.gbc: $$(%_obj) layout.link
-	$(RGBLINK) -p $($*_pad) -w -m $*.map -n $*.sym -l layout.link -o $@ $(filter %.o,$^)
-	$(RGBFIX) -p $($*_pad) $(opts) $@
+	$(RGBLINK) $(RGBLINKFLAGS) -l layout.link -m $*.map -n $*.sym -o $@ $(filter %.o,$^)
+	$(RGBFIX) $(RGBFIXFLAGS) $@


 ### Misc file-specific graphics rules
@ -157,12 +166,12 @@ gfx/surfing_pikachu/surfing_pikachu_1c.2bpp: tools/gfx += --trim-whitespace
 ### Catch-all graphics rules

 %.2bpp: %.png
-	$(RGBGFX) --colors dmg=e4 $(rgbgfx) -o $@ $<
+	$(RGBGFX) --colors dmg $(RGBGFXFLAGS) -o $@ $<
 	$(if $(tools/gfx),\
 		tools/gfx $(tools/gfx) -o $@ $@ || $$($(RM) $@ && false))

 %.1bpp: %.png
-	$(RGBGFX) --colors dmg=e4 $(rgbgfx) --depth 1 -o $@ $<
+	$(RGBGFX) --colors dmg $(RGBGFXFLAGS) --depth 1 -o $@ $<
 	$(if $(tools/gfx),\
 		tools/gfx $(tools/gfx) --depth 1 -o $@ $@ || $$($(RM) $@ && false))

--- a/constants/pokemon_data_constants.asm
+++ b/constants/pokemon_data_constants.asm
@ -64,7 +64,6 @@ DEF HOF_MON           EQU $10
 DEF HOF_TEAM          EQU PARTY_LENGTH * HOF_MON
 DEF HOF_TEAM_CAPACITY EQU 50

-
 ; mon data locations
 ; Note that some values are not supported by all functions that use these values.
 	const_def
@ -74,15 +73,14 @@ DEF HOF_TEAM_CAPACITY EQU 50
 	const DAYCARE_DATA      ; 3
 	const BATTLE_MON_DATA   ; 4

-
-; See data/pokemon/evos_moves.asm
-
 ; Evolution types
 	const_def 1
 	const EVOLVE_LEVEL ; 1
 	const EVOLVE_ITEM  ; 2
 	const EVOLVE_TRADE ; 3

+; evolution data (see data/pokemon/evos_moves.asm)
+DEF NUM_EVOS_IN_BUFFER EQU 3

 ; wMonHGrowthRate values
 ; GrowthRateTable indexes (see data/growth_rates.asm)
--- a/constants/text_constants.asm
+++ b/constants/text_constants.asm
@ -1,5 +1,5 @@
-DEF NAME_LENGTH EQU 11
-DEF ITEM_NAME_LENGTH EQU 13
+DEF NAME_LENGTH        EQU 11
+DEF ITEM_NAME_LENGTH   EQU 13
 DEF NAME_BUFFER_LENGTH EQU 20
 DEF NAME_LENGTH_JP EQU 6

@ -9,9 +9,9 @@ DEF NAME_LENGTH_JP EQU 6
 	const BIT_LEFT_ALIGN     ; 6
 	const BIT_LEADING_ZEROES ; 7

-DEF MONEY_SIGN EQU     (1 << BIT_MONEY_SIGN)
-DEF LEFT_ALIGN EQU     (1 << BIT_LEFT_ALIGN)
-DEF LEADING_ZEROES EQU (1 << BIT_LEADING_ZEROES)
+DEF MONEY_SIGN     EQU 1 << BIT_MONEY_SIGN
+DEF LEFT_ALIGN     EQU 1 << BIT_LEFT_ALIGN
+DEF LEADING_ZEROES EQU 1 << BIT_LEADING_ZEROES

 ; special text IDs (see home/text_script.asm)
 	const_def $d0
--- a/data/events/trades.asm
+++ b/data/events/trades.asm
@ -13,7 +13,8 @@ TradeMons:
 	; Red/Green. Japanese Blue changed _AfterTrade2Text to say your Pokémon
 	; "went and evolved" and also changed the trades to match. English
 	; Red/Blue uses the original JP Red/Green trades but with the JP Blue
-	; post-trade text.
+	; post-trade text. English Yellow changed _AfterTrade2Text to
+	; not mention evolution.
 	npctrade LICKITUNG,  DUGTRIO,  TRADE_DIALOGSET_CASUAL,    "GURIO"
 	npctrade CLEFAIRY,   MR_MIME,  TRADE_DIALOGSET_CASUAL,    "MILES"
 	npctrade BUTTERFREE, BEEDRILL, TRADE_DIALOGSET_HAPPY,     "STINGER" ; unused
--- a/engine/battle/animations.asm
+++ b/engine/battle/animations.asm
@ -1689,7 +1689,7 @@ _AnimationSquishMonPic:
 	call AnimCopyRowRight
 	inc hl
 .next
-	ld [hl], " "
+	ld [hl], ' '
 	pop hl
 	ld de, SCREEN_WIDTH
 	add hl, de
@ -1922,7 +1922,7 @@ _AnimationSlideMonOff:
 ; bugfix: compares against the max tile + 1 as opposed to the max tile
 	cp $62
 	ret c
-	ld a, " "
+	ld a, ' '
 	ret

 .EnemyNextTile
@ -1932,7 +1932,7 @@ _AnimationSlideMonOff:
 ; the lower right tile is in the first column to slide off the screen.
 	cp $30
 	ret c
-	ld a, " "
+	ld a, ' '
 	ret

 AnimationSlideMonHalfOff:
--- a/engine/battle/core.asm
+++ b/engine/battle/core.asm
@ -20,7 +20,7 @@ SlidePlayerAndEnemySilhouettesOnScreen:
 	ld hl, vBGMap0
 	ld bc, TILEMAP_AREA
 .clearBackgroundLoop
-	ld a, " "
+	ld a, ' '
 	ld [hli], a
 	dec bc
 	ld a, b
@ -2059,11 +2059,11 @@ CenterMonName:
 .loop
 	inc de
 	ld a, [de]
-	cp "@"
+	cp '@'
 	jr z, .done
 	inc de
 	ld a, [de]
-	cp "@"
+	cp '@'
 	jr z, .done
 	dec hl
 	dec b
@ -2120,15 +2120,15 @@ DisplayBattleMenu::
 	call CopyData
 ; the following simulates the keystrokes by drawing menus on screen
 	hlcoord 9, 14
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ld c, 20
 	call DelayFrames
-	ld [hl], " "
+	ld [hl], ' '
 	hlcoord 9, 16
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ld c, 20
 	call DelayFrames
-	ld [hl], "▷"
+	ld [hl], '▷'
 	ld a, $2 ; select the "ITEM" menu
 	jp .upperLeftMenuItemWasNotSelected
 .oldManName
@ -2148,7 +2148,7 @@ DisplayBattleMenu::
 .leftColumn ; put cursor in left column of menu
 	ld a, [wBattleType]
 	cp BATTLE_TYPE_SAFARI
-	ld a, " "
+	ld a, ' '
 	jr z, .safariLeftColumn
 ; put cursor in left column for normal battle menu (i.e. when it's not a Safari battle)
 	ldcoord_a 15, 14 ; clear upper cursor position in right column
@ -2181,7 +2181,7 @@ DisplayBattleMenu::
 .rightColumn ; put cursor in right column of menu
 	ld a, [wBattleType]
 	cp BATTLE_TYPE_SAFARI
-	ld a, " "
+	ld a, ' '
 	jr z, .safariRightColumn
 ; put cursor in right column for normal battle menu (i.e. when it's not a Safari battle)
 	ldcoord_a 9, 14 ; clear upper cursor position in left column
@ -2432,7 +2432,7 @@ PartyMenuOrRockOrRun:
 .partyMonDeselected
 	hlcoord 11, 11
 	ld bc, 6 * SCREEN_WIDTH + 9
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	xor a ; NORMAL_PARTY_MENU
 	ld [wPartyMenuTypeOrMessageID], a
@ -2600,9 +2600,9 @@ MoveSelectionMenu:
 	   ; so it is necessary to put the di ei block to not cause tearing
 	call TextBoxBorder
 	hlcoord 4, 12
-	ld [hl], "─"
+	ld [hl], '─'
 	hlcoord 10, 12
-	ld [hl], "┘"
+	ld [hl], '┘'
 	ei
 	hlcoord 6, 13
 	call .writemoves
@ -2704,7 +2704,7 @@ SelectMenuItem:
 	dec a
 	ld bc, SCREEN_WIDTH
 	call AddNTimes
-	ld [hl], "▷"
+	ld [hl], '▷'
 .select
 	ld hl, hUILayoutFlags
 	set BIT_DOUBLE_SPACED_MENU, [hl]
@ -3057,9 +3057,9 @@ PrintMenuItem:
 	ld de, TypeText
 	call PlaceString
 	hlcoord 7, 11
-	ld [hl], "/"
+	ld [hl], '/'
 	hlcoord 5, 9
-	ld [hl], "/"
+	ld [hl], '/'
 	hlcoord 5, 11
 	ld de, wBattleMenuCurrentPP
 	lb bc, 1, 2
--- a/engine/battle/effects.asm
+++ b/engine/battle/effects.asm
@ -779,7 +779,7 @@ FellText:

 PrintStatText:
 	ld hl, StatModTextStrings
-	ld c, "@"
+	ld c, '@'
 .findStatName_outer
 	dec b
 	jr z, .foundStatName
--- a/engine/battle/init_battle.asm
+++ b/engine/battle/init_battle.asm
@ -76,17 +76,17 @@ InitWildBattle:
 	ld [hli], a   ; write front sprite pointer
 	ld [hl], b
 	ld hl, wEnemyMonNick  ; set name to "GHOST"
-	ld a, "G"
+	ld a, 'G'
 	ld [hli], a
-	ld a, "H"
+	ld a, 'H'
 	ld [hli], a
-	ld a, "O"
+	ld a, 'O'
 	ld [hli], a
-	ld a, "S"
+	ld a, 'S'
 	ld [hli], a
-	ld a, "T"
+	ld a, 'T'
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld a, [wCurPartySpecies]
 	push af
 	ld a, MON_GHOST
--- a/engine/battle/link_battle_versus_text.asm
+++ b/engine/battle/link_battle_versus_text.asm
@ -12,9 +12,9 @@ DisplayLinkBattleVersusTextBox:
 	call PlaceString
 ; place bold "VS" tiles between the names
 	hlcoord 9, 8
-	ld a, "<BOLD_V>"
+	ld a, '<BOLD_V>'
 	ld [hli], a
-	ld [hl], "<BOLD_S>"
+	ld [hl], '<BOLD_S>'
 	xor a
 	ld [wUpdateSpritesEnabled], a
 	callfar SetupPlayerAndEnemyPokeballs
--- a/engine/battle/misc.asm
+++ b/engine/battle/misc.asm
@ -17,7 +17,7 @@ FormatMovesString:
 	ld hl, wNameBuffer
 .copyNameLoop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr z, .doneCopyingName
 	ld [de], a
 	inc de
@ -26,7 +26,7 @@ FormatMovesString:
 	ld a, b
 	ld [wNumMovesMinusOne], a
 	inc b
-	ld a, "<NEXT>"
+	ld a, '<NEXT>'
 	ld [de], a
 	inc de
 	pop hl
@ -35,19 +35,19 @@ FormatMovesString:
 	jr z, .done
 	jr .printMoveNameLoop
 .printDashLoop
-	ld a, "-"
+	ld a, '-'
 	ld [de], a
 	inc de
 	inc b
 	ld a, b
 	cp NUM_MOVES
 	jr z, .done
-	ld a, "<NEXT>"
+	ld a, '<NEXT>'
 	ld [de], a
 	inc de
 	jr .printDashLoop
 .done
-	ld a, "@"
+	ld a, '@'
 	ld [de], a
 	ret

--- a/engine/battle/print_type.asm
+++ b/engine/battle/print_type.asm
@ -25,7 +25,7 @@ PrintType:

 ; erase "TYPE2/" if the mon only has 1 type
 EraseType2Text:
-	ld a, " "
+	ld a, ' '
 	ld bc, $13
 	add hl, bc
 	ld bc, $6
--- a/engine/battle/save_trainer_name.asm
+++ b/engine/battle/save_trainer_name.asm
@ -14,7 +14,7 @@ SaveTrainerName::
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .CopyCharacter
 	ret

--- a/engine/debug/debug_menu.asm
+++ b/engine/debug/debug_menu.asm
@ -131,11 +131,11 @@ Func_fe7ca:
 	push hl
 	push bc
 	dec hl
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	ld bc, 11
 	add hl, bc
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	push de
 	pop de
@ -232,13 +232,13 @@ Func_fe85d:
 	ld [wWhichPokemon], a
 	dec de
 	dec hl
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	push bc
 	ld bc, hMovingBGTilesCounter1
 	add hl, bc
 	pop bc
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	inc hl
 	push hl
@ -254,11 +254,11 @@ Func_fe880:
 	ld [wWhichPokemon], a
 	inc de
 	dec hl
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	ld bc, SCREEN_WIDTH * 2
 	add hl, bc
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	inc hl
 	push hl
@ -270,11 +270,11 @@ Func_fe8a1:
 	push hl
 	push bc
 	dec hl
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	ld bc, 11
 	add hl, bc
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	pop bc
 	pop hl
@ -352,7 +352,7 @@ Func_fe912:
 	push hl
 	ld bc, 10
 	add hl, bc
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	pop hl
 	ld bc, hMovingBGTilesCounter1
@ -360,7 +360,7 @@ Func_fe912:
 	push hl
 	ld bc, 10
 	add hl, bc
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	call Func_fe964
 	pop hl
@ -376,7 +376,7 @@ Func_fe93b:
 	push hl
 	ld bc, 10
 	add hl, bc
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	pop hl
 	ld bc, SCREEN_WIDTH * 2
@ -384,7 +384,7 @@ Func_fe93b:
 	push hl
 	ld bc, 10
 	add hl, bc
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	call Func_fe964
 	pop hl
@ -532,10 +532,10 @@ Func_fe97f:
 	pop bc
 	; fallthrough
 Func_fea78:
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 0, 8
 	ldcoord_a 15, 8
-	ld a, "▶"
+	ld a, '▶'
 	ldcoord_a 0, 4
 	; fallthrough
 Func_fea85:
@ -566,7 +566,7 @@ Func_fea9d:
 	jr nz, .asm_feace
 	ld a, 2
 	ld [wIsInBattle], a
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 4, 3
 	hlcoord 1, 4
 	ld de, Text_fedb2
@ -575,7 +575,7 @@ Func_fea9d:
 .asm_feace
 	ld a, 1
 	ld [wIsInBattle], a
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 1, 3
 	hlcoord 1, 4
 	ld de, Text_feda8
@ -583,9 +583,9 @@ Func_fea9d:
 	jp Func_fea85

 Func_feae4:
-	ld a, "▶"
+	ld a, '▶'
 	ldcoord_a 0, 8
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 15, 8
 	ldcoord_a 0, 4
 	; fallthrough
@ -694,9 +694,9 @@ Func_feb82:
 	jp Func_feb64

 Func_febba:
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 0, 8
-	ld a, "▶"
+	ld a, '▶'
 	ldcoord_a 15, 8
 	; fallthrough
 Func_febc4:
@ -940,9 +940,9 @@ Func_fedfe:
 	; fallthrough
 Func_fee23:
 	hlcoord 0, 3
-	ld [hl], " "
+	ld [hl], ' '
 	hlcoord 0, 1
-	ld [hl], "▶"
+	ld [hl], '▶'
 	call Func_fee60
 .asm_fee30
 	call DelayFrame
@ -995,11 +995,11 @@ Func_fee60:

 Func_fee96:
 	hlcoord 0, 1
-	ld [hl], " "
+	ld [hl], ' '
 	hlcoord 0, 3
-	ld [hl], "▶"
+	ld [hl], '▶'
 	hlcoord 0, 5
-	ld [hl], " "
+	ld [hl], ' '
 	call Func_feee2
 	call Func_feeef
 .asm_feeab
@ -1173,13 +1173,13 @@ Func_fefc5:
 	pop de
 	pop hl
 	push hl
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ld bc, hMovingBGTilesCounter1
 	add hl, bc
-	ld [hl], " "
+	ld [hl], ' '
 	ld bc, SCREEN_WIDTH * 4
 	add hl, bc
-	ld [hl], " "
+	ld [hl], ' '
 	pop hl
 	inc hl
 	ld a, [de]
@ -1218,7 +1218,7 @@ Func_ff006:
 	callfar Func_3b079
 	pop hl
 	jr c, .asm_ff036
-	ld [hl], "×"
+	ld [hl], '×'
 .asm_ff036
 	pop af
 	ld [wCurPartySpecies], a
@ -1296,13 +1296,13 @@ Func_ff09e:
 	push de
 	push bc
 	push hl
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ld bc, hMovingBGTilesCounter1
 	add hl, bc
-	ld [hl], " "
+	ld [hl], ' '
 	ld bc, SCREEN_WIDTH * 4
 	add hl, bc
-	ld [hl], " "
+	ld [hl], ' '
 	pop hl
 	inc hl
 	ld a, [de]
@ -1454,13 +1454,13 @@ Func_ff1b9:
 	; fallthrough
 Func_ff1e7:
 	hlcoord 2, 13
-	ld [hl], "ﾞ"
+	ld [hl], 'ﾞ'
 	hlcoord 1, 14
-	ld [hl], "レ"
+	ld [hl], 'レ'
 	inc hl
-	ld [hl], "へ"
+	ld [hl], 'へ'
 	inc hl
-	ld [hl], "ル"
+	ld [hl], 'ル'
 	inc hl
 	inc hl
 	ld de, wCurEnemyLevel
--- a/engine/events/give_pokemon.asm
+++ b/engine/events/give_pokemon.asm
@ -24,15 +24,15 @@ _GivePokemon::
 	cp 9
 	jr c, .singleDigitBoxNum
 	sub 9
-	ld [hl], "1"
+	ld [hl], '1'
 	inc hl
-	add "0"
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld hl, SentToBoxText
 	call PrintText
 	scf
--- a/engine/events/pokedex_rating.asm
+++ b/engine/events/pokedex_rating.asm
@ -42,7 +42,7 @@ DisplayDexRating:
 	inc de
 .copyRatingTextLoop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr z, .doneCopying
 	ld [de], a
 	inc de
--- a/engine/gfx/hp_bar.asm
+++ b/engine/gfx/hp_bar.asm
@ -221,7 +221,7 @@ UpdateHPBar_PrintHPNumber:
 .hpBelowBar
 	add hl, de
 	push hl
-	ld a, " "
+	ld a, ' '
 	ld [hli], a
 	ld [hli], a
 	ld [hli], a
--- a/engine/items/item_effects.asm
+++ b/engine/items/item_effects.asm
@ -2441,7 +2441,7 @@ ItemUseTMHM:
 .chooseMon
 	ld hl, wStringBuffer
 	ld de, wTempMoveNameBuffer
-	ld bc, 14
+	ld bc, ITEM_NAME_LENGTH + 1
 	call CopyData ; save the move name because DisplayPartyMenu will overwrite it
 	ld a, $ff
 	ld [wUpdateSpritesEnabled], a
@ -2451,7 +2451,7 @@ ItemUseTMHM:
 	push af
 	ld hl, wTempMoveNameBuffer
 	ld de, wStringBuffer
-	ld bc, 14
+	ld bc, ITEM_NAME_LENGTH + 1
 	call CopyData
 	pop af
 	jr nc, .checkIfAbleToLearnMove
--- a/engine/items/town_map.asm
+++ b/engine/items/town_map.asm
@ -57,7 +57,7 @@ DisplayTownMap:
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .copyMapName
 	hlcoord 1, 0
 	ld de, wNameBuffer
@ -176,7 +176,7 @@ LoadTownMap_Fly::
 	ld hl, wFlyLocationsList
 	decoord 18, 0
 .townMapFlyLoop
-	ld a, " "
+	ld a, ' '
 	ld [de], a
 	push hl
 	push hl
@ -193,9 +193,9 @@ LoadTownMap_Fly::
 	ld c, 15
 	call DelayFrames
 	hlcoord 18, 0
-	ld [hl], "▲"
+	ld [hl], '▲'
 	hlcoord 19, 0
-	ld [hl], "▼"
+	ld [hl], '▼'
 	pop hl
 .inputLoop
 	push hl
@ -373,7 +373,7 @@ DrawPlayerOrBirdSprite:
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .loop
 	ld hl, wShadowOAM
 	ld de, wShadowOAMBackup
--- a/engine/link/cable_club.asm
+++ b/engine/link/cable_club.asm
@ -488,7 +488,7 @@ TradeCenter_SelectMon:
 	ld a, 16
 	ld [wTopMenuItemY], a
 .selectStatsMenuItem
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 11, 16
 	ld a, PAD_RIGHT | PAD_B | PAD_A
 	ld [wMenuWatchedKeys], a
@ -505,7 +505,7 @@ TradeCenter_SelectMon:
 	call LoadScreenTilesFromBuffer1
 	jp .playerMonMenu
 .selectTradeMenuItem
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 1, 16
 	ld a, PAD_LEFT | PAD_B | PAD_A
 	ld [wMenuWatchedKeys], a
@ -553,10 +553,10 @@ TradeCenter_SelectMon:
 	ld l, a
 	ld a, [wMenuCursorLocation + 1]
 	ld h, a
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 .cancelMenuItem_Loop
-	ld a, "▶" ; filled arrow cursor
+	ld a, '▶' ; filled arrow cursor
 	ldcoord_a 1, 16
 .cancelMenuItem_JoypadLoop
 	call JoypadLowSensitivity
@ -568,14 +568,14 @@ TradeCenter_SelectMon:
 	bit B_PAD_UP, a
 	jr z, .cancelMenuItem_JoypadLoop
 ; if Up pressed
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 1, 16
 	ld a, [wPartyCount]
 	dec a
 	ld [wCurrentMenuItem], a
 	jp .playerMonMenu
 .cancelMenuItem_APressed
-	ld a, "▷" ; unfilled arrow cursor
+	ld a, '▷' ; unfilled arrow cursor
 	ldcoord_a 1, 16
 	ld a, $f
 	ld [wSerialExchangeNybbleSendData], a
@ -624,7 +624,7 @@ TradeCenter_PlaceSelectedEnemyMonMenuCursor:
 	hlcoord 1, 9
 	ld bc, SCREEN_WIDTH
 	call AddNTimes
-	ld [hl], "▷" ; cursor
+	ld [hl], '▷' ; cursor
 	ret

 TradeCenter_DisplayStats:
@ -956,7 +956,7 @@ CableClub_TextBoxBorder:
 	push hl
 	ld a, $7b ; border left vertical line tile
 	ld [hli], a
-	ld a, " "
+	ld a, ' '
 	call CableClub_DrawHorizontalLine
 	ld [hl], $77 ; border right vertical line tile
 	pop hl
--- a/engine/menus/link_menu.asm
+++ b/engine/menus/link_menu.asm
@ -109,10 +109,10 @@ Func_f531b::
 	call Serial_SendZeroByte
 	dec b
 	jr nz, .loop
-	ld b, " "
-	ld c, " "
-	ld d, " "
-	ld e, "▷"
+	ld b, ' '
+	ld c, ' '
+	ld d, ' '
+	ld e, '▷'
 	ld a, [wLinkMenuSelectionSendBuffer]
 	bit 3, a
 	jr nz, .asm_f541a
@ -358,7 +358,7 @@ PetitCup::
 	ld hl, wNameBuffer
 .loop2
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .loop2
 	ld a, [hli]
 	cp $7
@ -736,10 +736,10 @@ LinkMenu:
 	ld a, SC_START | SC_INTERNAL
 	ldh [rSC], a
 .skipStartingTransfer
-	ld b, " "
-	ld c, " "
-	ld d, " "
-	ld e, "▷"
+	ld b, ' '
+	ld c, ' '
+	ld d, ' '
+	ld e, '▷'
 	ld a, [wLinkMenuSelectionSendBuffer]
 	and PAD_B << 2 ; was B button pressed?
 	jr nz, .updateCursorPosition
@ -811,10 +811,10 @@ LinkMenu:
 	ld a, [wNamedObjectIndex]
 	and a
 	jr nz, .asm_f5974
-	ld b, " "
-	ld c, " "
-	ld d, "▷"
-	ld e, " "
+	ld b, ' '
+	ld c, ' '
+	ld d, '▷'
+	ld e, ' '
 	call Func_f59ec
 .asm_f5974
 	xor a
@ -856,10 +856,10 @@ LinkMenu:
 	ld a, [wNamedObjectIndex]
 	and a
 	jr z, .asm_f59cd
-	ld b, " "
-	ld c, " "
-	ld d, " "
-	ld e, "▷"
+	ld b, ' '
+	ld c, ' '
+	ld d, ' '
+	ld e, '▷'
 	call Func_f59ec
 	jp .choseCancel

@ -869,10 +869,10 @@ LinkMenu:
 	jp .choseCancel

 .asm_f59d6
-	ld b, " "
-	ld c, " "
-	ld d, "▷"
-	ld e, " "
+	ld b, ' '
+	ld c, ' '
+	ld d, '▷'
+	ld e, ' '
 	call Func_f59ec
 	call Func_f531b
 	jp c, .choseCancel
--- a/engine/menus/main_menu.asm
+++ b/engine/menus/main_menu.asm
@ -284,7 +284,7 @@ CheckForPlayerNameInSRAM:
 	ld hl, sPlayerName
 .loop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr z, .found
 	dec b
 	jr nz, .loop
--- a/engine/menus/naming_screen.asm
+++ b/engine/menus/naming_screen.asm
@ -39,7 +39,7 @@ AskName:
 	pop af
 	ld [wUpdateSpritesEnabled], a
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	ret nz
 .declinedNickname
 	ld d, h
@ -63,7 +63,7 @@ DisplayNameRaterScreen::
 	call RestoreScreenTilesAndReloadTilePatterns
 	call LoadGBPal
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	jr z, .playerCancelled
 	ld hl, wPartyMonNicks
 	ld bc, NAME_LENGTH
@ -106,7 +106,7 @@ DisplayNamingScreen:
 	ld [wMenuWatchedKeys], a
 	ld a, 7
 	ld [wMaxMenuItem], a
-	ld a, "@"
+	ld a, '@'
 	ld [wStringBuffer], a
 	xor a
 	ld hl, wNamingScreenSubmitName
@ -229,10 +229,10 @@ DisplayNamingScreen:
 	ld [wNamingScreenLetter], a
 	call CalcStringLength
 	ld a, [wNamingScreenLetter]
-	cp "ﾞ"
+	cp 'ﾞ'
 	ld de, Dakutens
 	jr z, .dakutensAndHandakutens
-	cp "ﾟ"
+	cp 'ﾟ'
 	ld de, Handakutens
 	jr z, .dakutensAndHandakutens
 	ld a, [wNamingScreenType]
@ -257,7 +257,7 @@ DisplayNamingScreen:
 .addLetter
 	ld a, [wNamingScreenLetter]
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld a, SFX_PRESS_AB
 	call PlaySound
 	ret
@ -267,7 +267,7 @@ DisplayNamingScreen:
 	ret z
 	call CalcStringLength
 	dec hl
-	ld [hl], "@"
+	ld [hl], '@'
 	ret
 .pressedRight
 	ld a, [wCurrentMenuItem]
@ -457,7 +457,7 @@ CalcStringLength:
 	ld c, $0
 .loop
 	ld a, [hl]
-	cp "@"
+	cp '@'
 	ret z
 	inc hl
 	inc c
@ -483,7 +483,7 @@ PrintNamingText:
 	call PlaceString
 	ld hl, $1
 	add hl, bc
-	ld [hl], "の" ; leftover from Japanese version; blank tile $c9 in English
+	ld [hl], 'の' ; leftover from Japanese version; blank tile $c9 in English
 	hlcoord 1, 3
 	ld de, NicknameTextString
 	jr .placeString
--- a/engine/menus/options.asm
+++ b/engine/menus/options.asm
@ -433,7 +433,7 @@ OptionsMenu_UpdateCursorPosition:
 	ld de, SCREEN_WIDTH
 	ld c, 16
 .loop
-	ld [hl], " "
+	ld [hl], ' '
 	add hl, de
 	dec c
 	jr nz, .loop
@ -441,7 +441,7 @@ OptionsMenu_UpdateCursorPosition:
 	ld bc, SCREEN_WIDTH * 2
 	ld a, [wOptionsCursorLocation]
 	call AddNTimes
-	ld [hl], "▶"
+	ld [hl], '▶'
 	ret

 InitOptionsMenu:
--- a/engine/menus/party_menu.asm
+++ b/engine/menus/party_menu.asm
@ -59,7 +59,7 @@ RedrawPartyMenu_::
 	dec hl
 	dec hl
 	dec hl
-	ld a, "▷" ; unfilled right arrow menu cursor
+	ld a, '▷' ; unfilled right arrow menu cursor
 	ld [hli], a ; place the cursor
 	inc hl
 	inc hl
@ -139,7 +139,7 @@ RedrawPartyMenu_::
 	ld l, a
 	ld de, wEvoDataBuffer
 	ld a, BANK(EvosMovesPointerTable)
-	ld bc, 4 * 3 + 1 ; enough for Eevee's three 4-byte evolutions and 0 terminator
+	ld bc, wEvoDataBufferEnd - wEvoDataBuffer
 	call FarCopyData
 	ld hl, wEvoDataBuffer
 	ld de, .notAbleToEvolveText
--- a/engine/menus/pokedex.asm
+++ b/engine/menus/pokedex.asm
@ -136,7 +136,7 @@ ENDC
 	push bc
 	hlcoord 0, 3
 	ld de, 20
-	lb bc, " ", 13
+	lb bc, ' ', 13
 	call DrawTileLine ; cover up the menu cursor in the pokemon list
 	pop bc
 	ret
@ -145,7 +145,7 @@ ENDC
 	push bc
 	hlcoord 15, 8
 	ld de, 20
-	lb bc, " ", 9
+	lb bc, ' ', 9
 	call DrawTileLine ; cover up the menu cursor in the side menu
 	pop bc
 	jr .exitSideMenu
@ -266,7 +266,7 @@ Pokedex_DrawInterface:
 	ldh [hAutoBGTransferEnabled], a
 ; draw the horizontal line separating the seen and owned amounts from the menu
 	hlcoord 15, 6
-	ld a, "─"
+	ld a, '─'
 	ld [hli], a
 	ld [hli], a
 	ld [hli], a
@ -388,7 +388,7 @@ Pokedex_PlacePokemonList:
 	ld hl, wPokedexOwned
 	call IsPokemonBitSet
 	pop hl
-	ld a, " "
+	ld a, ' '
 	jr z, .writeTile
 	ld a, $72 ; pokeball tile
 .writeTile
@ -558,9 +558,9 @@ DrawDexEntryOnScreen:
 	call IndexToPokedex

 	hlcoord 2, 8
-	ld a, "№"
+	ld a, '№'
 	ld [hli], a
-	ld a, "<DOT>"
+	ld a, '<DOT>'
 	ld [hli], a
 	ld de, wPokedexNum
 	lb bc, LEADING_ZEROES | 1, 3
@ -601,14 +601,14 @@ DrawDexEntryOnScreen:
 	hlcoord 12, 6
 	lb bc, 1, 2
 	call PrintNumber ; print feet (height)
-	ld a, "′"
+	ld a, '′'
 	ld [hl], a
 	inc de
 	inc de ; de = address of inches (height)
 	hlcoord 15, 6
 	lb bc, LEADING_ZEROES | 1, 2
 	call PrintNumber ; print inches (height)
-	ld a, "″"
+	ld a, '″'
 	ld [hl], a
 ; now print the weight (note that weight is stored in tenths of pounds internally)
 	inc de
@ -636,12 +636,12 @@ DrawDexEntryOnScreen:
 	ldh a, [hDexWeight]
 	sbc 0
 	jr nc, .next
-	ld [hl], "0" ; if the weight is less than 10, put a 0 before the decimal point
+	ld [hl], '0' ; if the weight is less than 10, put a 0 before the decimal point
 .next
 	inc hl
 	ld a, [hli]
 	ld [hld], a ; make space for the decimal point by moving the last digit forward one tile
-	ld [hl], "<DOT>" ; decimal point tile
+	ld [hl], '<DOT>' ; decimal point tile
 	pop af
 	ldh [hDexWeight + 1], a ; restore original value of [hDexWeight + 1]
 	pop af
--- a/engine/menus/save.asm
+++ b/engine/menus/save.asm
@ -451,11 +451,11 @@ DisplayChangeBoxMenu:
 	jr c, .singleDigitBoxNum
 	sub 9
 	hlcoord 8, 2
-	ld [hl], "1"
-	add "0"
+	ld [hl], '1'
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ldcoord_a 9, 2
 	hlcoord 1, 2
--- a/engine/menus/start_sub_menus.asm
+++ b/engine/menus/start_sub_menus.asm
@ -306,7 +306,7 @@ ErasePartyMenuCursors::
 	ld bc, 2 * SCREEN_WIDTH ; menu cursor positions are 2 rows apart
 	ld a, 6 ; 6 menu cursor positions
 .loop
-	ld [hl], " "
+	ld [hl], ' '
 	add hl, bc
 	dec a
 	jr nz, .loop
@ -346,7 +346,7 @@ StartMenu_Item::
 	jp RedisplayStartMenu
 .choseItem
 ; erase menu cursor (blank each tile in front of an item name)
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 5, 4
 	ldcoord_a 5, 6
 	ldcoord_a 5, 8
@ -499,7 +499,7 @@ DrawTrainerInfo:
 	predef DisplayPicCenteredOrUpperRight
 	call DisableLCD
 	hlcoord 0, 2
-	ld a, " "
+	ld a, ' '
 	call TrainerInfo_DrawVerticalLine
 	hlcoord 1, 2
 	call TrainerInfo_DrawVerticalLine
@ -689,7 +689,7 @@ SwitchPartyMon_ClearGfx:
 	ld bc, SCREEN_WIDTH * 2
 	call AddNTimes
 	ld c, SCREEN_WIDTH * 2
-	ld a, " "
+	ld a, ' '
 .clearMonBGLoop ; clear the mon's row in the party menu
 	ld [hli], a
 	dec c
--- a/engine/menus/text_box.asm
+++ b/engine/menus/text_box.asm
@ -442,7 +442,7 @@ DisplayFieldMoveMonMenu:
 	jr z, .reachedName
 .skipNameLoop ; skip past current name
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .skipNameLoop
 	jr .skipNamesLoop
 .reachedName
--- a/engine/menus/unused_input.asm
+++ b/engine/menus/unused_input.asm
@ -98,7 +98,7 @@ PlaceMenuCursorDuplicate:
 	jr nz, .loop2
 .asm_f5ad5
 	ld a, [hl]
-	cp "▶"
+	cp '▶'
 	jr nz, .asm_f5ade
 	ld a, [wTileBehindCursor]
 	ld [hl], a
@ -114,11 +114,11 @@ PlaceMenuCursorDuplicate:
 	jr nz, .loop3
 .asm_f5aec
 	ld a, [hl]
-	cp "▶"
+	cp '▶'
 	jr z, .asm_f5af4
 	ld [wTileBehindCursor], a
 .asm_f5af4
-	ld a, "▶"
+	ld a, '▶'
 	ld [hl], a
 	ld a, l
 	ld [wMenuCursorLocation], a
--- a/engine/movie/credits.asm
+++ b/engine/movie/credits.asm
@ -171,7 +171,7 @@ FillFourRowsWithBlack:
 FillMiddleOfScreenWithWhite:
 	hlcoord 0, 4
 	ld bc, SCREEN_WIDTH * 10
-	ld a, " "
+	ld a, ' '
 	jp FillMemory

 FillLeftHalfOfScreenWithWhite:
@ -191,7 +191,7 @@ FillRightHalfOfScreenWithWhite:
 FillHalfOfScreenWithWhite:
 	ld b, 10
 	ld c, 10
-	ld a, " "
+	ld a, ' '
 .loop
 	push bc
 	push hl
--- a/engine/movie/hall_of_fame.asm
+++ b/engine/movie/hall_of_fame.asm
@ -8,7 +8,7 @@ AnimateHallOfFame:
 	call DisableLCD
 	ld hl, vBGMap0
 	ld bc, 2 * TILEMAP_AREA
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	call EnableLCD
 	ld hl, rLCDC
--- a/engine/movie/oak_speech/oak_speech2.asm
+++ b/engine/movie/oak_speech/oak_speech2.asm
@ -16,7 +16,7 @@ ChoosePlayerName:
 	ld [wNamingScreenType], a
 	call DisplayNamingScreen
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	jr z, .customName
 	call ClearScreen
 	call Delay3
@ -49,7 +49,7 @@ ChooseRivalName:
 	ld [wNamingScreenType], a
 	call DisplayNamingScreen
 	ld a, [wStringBuffer]
-	cp "@"
+	cp '@'
 	jr z, .customName
 	call ClearScreen
 	call Delay3
@ -199,7 +199,7 @@ GetDefaultName:
 	ld e, l
 .innerLoop
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .innerLoop
 	ld a, b
 	cp c
--- a/engine/movie/title.asm
+++ b/engine/movie/title.asm
@ -53,7 +53,7 @@ DisplayTitleScreen:
 	callfar LoadYellowTitleScreenGFX
 	ld hl, vBGMap0
 	ld bc, (vBGMap1 tile $40) - vBGMap0
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	callfar TitleScreen_PlacePokemonLogo
 	call FillSpriteBuffer0WithAA
--- a/engine/movie/trade.asm
+++ b/engine/movie/trade.asm
@ -151,7 +151,7 @@ Trade_Delay80:
 Trade_ClearTileMap:
 	hlcoord 0, 0
 	ld bc, SCREEN_AREA
-	ld a, " "
+	ld a, ' '
 	jp FillMemory

 LoadTradingGFXAndMonNames:
@ -169,7 +169,7 @@ LoadTradingGFXAndMonNames:
 	call FarCopyData
 	ld hl, vBGMap0
 	ld bc, 2 * TILEMAP_AREA
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	call ClearSprites
 	ld a, $ff
--- a/engine/overworld/player_state.asm
+++ b/engine/overworld/player_state.asm
@ -241,7 +241,7 @@ PrintSafariZoneSteps::
 	cp 10
 	jr nc, .tenOrMore
 	hlcoord 5, 3
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 .tenOrMore
 	hlcoord 6, 3
--- a/engine/overworld/wild_mons.asm
+++ b/engine/overworld/wild_mons.asm
@ -16,10 +16,10 @@ LoadWildData::
 	jr z, .NoGrassData ; if no grass data, skip to surfing data
 	push hl
 	ld de, wGrassMons ; otherwise, load grass data
-	ld bc, $14
+	ld bc, WILDDATA_LENGTH - 1
 	call CopyData
 	pop hl
-	ld bc, $14
+	ld bc, WILDDATA_LENGTH - 1
 	add hl, bc
 .NoGrassData
 	ld a, [hli]
@ -27,7 +27,7 @@ LoadWildData::
 	and a
 	ret z        ; if no water data, we're done
 	ld de, wWaterMons  ; otherwise, load surfing data
-	ld bc, $14
+	ld bc, WILDDATA_LENGTH - 1
 	jp CopyData

 INCLUDE "data/wild/grass_water.asm"
--- a/engine/pokemon/bills_pc.asm
+++ b/engine/pokemon/bills_pc.asm
@ -154,11 +154,11 @@ BillsPCMenu:
 ; two digit box num
 	sub 9
 	hlcoord 17, 16
-	ld [hl], "1"
-	add "0"
+	ld [hl], '1'
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ldcoord_a 18, 16
 	hlcoord 10, 16
@ -258,15 +258,15 @@ BillsPCDeposit:
 	cp 9
 	jr c, .singleDigitBoxNum
 	sub 9
-	ld [hl], "1"
+	ld [hl], '1'
 	inc hl
-	add "0"
+	add '0'
 	jr .next
 .singleDigitBoxNum
-	add "1"
+	add '1'
 .next
 	ld [hli], a
-	ld [hl], "@"
+	ld [hl], '@'
 	ld hl, MonWasStoredText
 	call PrintText
 	jp BillsPCMenu
--- a/engine/pokemon/evos_moves.asm
+++ b/engine/pokemon/evos_moves.asm
@ -280,7 +280,7 @@ RenameEvolvedMon:
 	cp [hl]
 	inc hl
 	ret nz
-	cp "@"
+	cp '@'
 	jr nz, .compareNamesLoop
 	ld a, [wWhichPokemon]
 	ld bc, NAME_LENGTH
--- a/engine/pokemon/status_ailments.asm
+++ b/engine/pokemon/status_ailments.asm
@ -10,37 +10,37 @@ PrintStatusAilment::
 	jr nz, .par
 	and SLP_MASK
 	ret z
-	ld a, "S"
+	ld a, 'S'
 	ld [hli], a
-	ld a, "L"
+	ld a, 'L'
 	ld [hli], a
-	ld [hl], "P"
+	ld [hl], 'P'
 	ret
 .psn
-	ld a, "P"
+	ld a, 'P'
 	ld [hli], a
-	ld a, "S"
+	ld a, 'S'
 	ld [hli], a
-	ld [hl], "N"
+	ld [hl], 'N'
 	ret
 .brn
-	ld a, "B"
+	ld a, 'B'
 	ld [hli], a
-	ld a, "R"
+	ld a, 'R'
 	ld [hli], a
-	ld [hl], "N"
+	ld [hl], 'N'
 	ret
 .frz
-	ld a, "F"
+	ld a, 'F'
 	ld [hli], a
-	ld a, "R"
+	ld a, 'R'
 	ld [hli], a
-	ld [hl], "Z"
+	ld [hl], 'Z'
 	ret
 .par
-	ld a, "P"
+	ld a, 'P'
 	ld [hli], a
-	ld a, "A"
+	ld a, 'A'
 	ld [hli], a
-	ld [hl], "R"
+	ld [hl], 'R'
 	ret
--- a/engine/pokemon/status_screen.asm
+++ b/engine/pokemon/status_screen.asm
@ -52,7 +52,7 @@ DrawHP_:
 	ld de, wLoadedMonHP
 	lb bc, 2, 3
 	call PrintNumber
-	ld a, "/"
+	ld a, '/'
 	ld [hli], a
 	ld de, wLoadedMonMaxHP
 	lb bc, 2, 3
@ -110,9 +110,9 @@ StatusScreen:
 	call DrawLineBox ; Draws the box around name, HP and status
 	ld de, -6
 	add hl, de
-	ld [hl], "<DOT>"
+	ld [hl], '<DOT>'
 	dec hl
-	ld [hl], "№"
+	ld [hl], '№'
 	hlcoord 19, 9
 	lb bc, 8, 6
 	call DrawLineBox ; Draws the box around types, ID No. and OT
@ -343,13 +343,13 @@ StatusScreen2:
 	ld b, a ; Number of moves ?
 	hlcoord 11, 10
 	ld de, SCREEN_WIDTH * 2
-	ld a, "<BOLD_P>"
+	ld a, '<BOLD_P>'
 	call StatusScreen_PrintPP ; Print "PP"
 	ld a, b
 	and a
 	jr z, .InitPP
 	ld c, a
-	ld a, "-"
+	ld a, '-'
 	call StatusScreen_PrintPP ; Fill the rest with --
 .InitPP
 	ld hl, wLoadedMonMoves
@ -386,7 +386,7 @@ StatusScreen2:
 	ld de, wStatusScreenCurrentPP
 	lb bc, 1, 2
 	call PrintNumber
-	ld a, "/"
+	ld a, '/'
 	ld [hli], a
 	ld de, wMaxPP
 	lb bc, 1, 2
@ -414,7 +414,7 @@ StatusScreen2:
 	ld [wLoadedMonLevel], a ; Increase temporarily if not 100
 .Level100
 	hlcoord 14, 6
-	ld [hl], "<to>"
+	ld [hl], '<to>'
 	inc hl
 	inc hl
 	call PrintLevel
@ -483,7 +483,7 @@ StatusScreenExpText:

 StatusScreen_ClearName:
 	ld bc, 10
-	ld a, " "
+	ld a, ' '
 	jp FillMemory

 StatusScreen_PrintPP:
--- a/engine/printer/printer.asm
+++ b/engine/printer/printer.asm
@ -675,7 +675,7 @@ Printer_PrepareSurfingMinigameHighScoreTileMap::
 .find_end_of_name
 	ld a, [hli]
 	inc c
-	cp "@"
+	cp '@'
 	jr nz, .find_end_of_name
 	ld a, 8
 	sub c
@ -778,7 +778,7 @@ PrintPCBox_DrawPage1:
 	call PrintPCBox_PlaceHorizontalLines
 	hlcoord 0, 0
 	ld bc, 11 * SCREEN_WIDTH
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	call PrintPCBox_DrawLeftAndRightBorders
 	call PrintPCBox_DrawTopBorder
@ -794,13 +794,13 @@ PrintPCBox_DrawPage1:
 	cp 9
 	jr c, .less_than_9
 	sub 9
-	ld [hl], "1"
+	ld [hl], '1'
 	inc hl
-	add "0"
+	add '0'
 	jr .placed_box_number

 .less_than_9
-	add "1"
+	add '1'
 .placed_box_number
 	ld [hl], a
 	hlcoord 4, 9
@ -846,7 +846,7 @@ PrintPCBox_DrawPage4:
 	call PrintPCBox_DrawBottomBorderAtHL
 	hlcoord 0, 16
 	ld bc, 2 * SCREEN_WIDTH
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	ld a, [wBoxDataStart]
 	cp 16
@ -872,14 +872,14 @@ PrintPCBox_PlaceBoxMonInfo:
 	push de
 	push hl
 	ld bc, 12
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	pop hl
 	push hl
 	ld de, SCREEN_WIDTH
 	add hl, de
 	ld bc, 12
-	ld a, " "
+	ld a, ' '
 	call FillMemory
 	pop hl
 	push hl
@ -896,7 +896,7 @@ PrintPCBox_PlaceBoxMonInfo:
 	pop hl
 	ld bc, SCREEN_WIDTH + 1
 	add hl, bc
-	ld [hl], " " ; blank tile instead of "/" separator in Yellow
+	ld [hl], ' ' ; blank tile instead of "/" separator in Yellow
 	inc hl
 	call PlaceString
 	ld hl, wBoxNumString
--- a/engine/printer/printer2.asm
+++ b/engine/printer/printer2.asm
@ -32,10 +32,10 @@ Printer_GetMonStats:
 	hlcoord 2, 10
 	ld a, $6e
 	ld [hli], a
-	ld [hl], " "
+	ld [hl], ' '

 	hlcoord 2, 11
-	ld [hl], "’"
+	ld [hl], '’'

 	hlcoord 4, 11
 	ld de, wLoadedMonMaxHP
@ -56,7 +56,7 @@ Printer_GetMonStats:

 	predef IndexToPokedex
 	hlcoord 2, 8
-	ld [hl], "№"
+	ld [hl], '№'
 	inc hl
 	ld [hl], $f2
 	inc hl
--- a/engine/slots/slot_machine.asm
+++ b/engine/slots/slot_machine.asm
@ -632,7 +632,7 @@ SlotMachine_PrintWinningSymbol:
 	inc a
 	ld [hl], a
 	hlcoord 18, 16
-	ld [hl], "▼"
+	ld [hl], '▼'
 	ret

 SlotMachine_SubtractBetFromPlayerCoins:
--- a/home/copy2.asm
+++ b/home/copy2.asm
@ -172,39 +172,39 @@ GetFarByte::

 ClearScreenArea::
 ; Clear tilemap area cxb at hl.
-	ld a, " " ; blank tile
-	ld de, 20 ; screen width
-.y
+	ld a, ' '
+	ld de, SCREEN_WIDTH
+.loopRows
 	push hl
 	push bc
-.x
+.loopTiles
 	ld [hli], a
 	dec c
-	jr nz, .x
+	jr nz, .loopTiles
 	pop bc
 	pop hl
 	add hl, de
 	dec b
-	jr nz, .y
+	jr nz, .loopRows
 	ret

 CopyScreenTileBufferToVRAM::
 ; Copy wTileMap to the BG Map starting at b * $100.
 ; This is done in thirds of 6 rows, so it takes 3 frames.

-	ld c, 6
+	ld c, SCREEN_HEIGHT / 3

-	ld hl, $600 * 0
+	lb hl, 0, 0
 	decoord 0, 6 * 0
 	call .setup
 	call DelayFrame

-	ld hl, $600 * 1
+	lb hl, SCREEN_HEIGHT / 3, 0
 	decoord 0, 6 * 1
 	call .setup
 	call DelayFrame

-	ld hl, $600 * 2
+	lb hl, 2 * SCREEN_HEIGHT / 3, 0
 	decoord 0, 6 * 2
 	call .setup
 	jp DelayFrame
@ -226,10 +226,10 @@ CopyScreenTileBufferToVRAM::
 ClearScreen::
 ; Clear wTileMap, then wait
 ; for the bg map to update.
-	ld bc, 20 * 18
+	ld bc, SCREEN_AREA
 	inc b
 	hlcoord 0, 0
-	ld a, " "
+	ld a, ' '
 .loop
 	ld [hli], a
 	dec c
--- a/home/copy_string.asm
+++ b/home/copy_string.asm
@ -8,6 +8,6 @@ CopyString::
 	ld a, [de]
 	inc de
 	ld [hli], a
-	cp "@"
+	cp '@'
 	jr nz, CopyString
 	ret
--- a/home/list_menu.asm
+++ b/home/list_menu.asm
@ -66,7 +66,7 @@ DisplayListMenuIDLoop::
 	and a ; is it the Old Man battle?
 	jr z, .notOldManBattle
 .oldManBattle
-	ld a, "▶"
+	ld a, '▶'
 	ldcoord_a 5, 4 ; place menu cursor in front of first menu entry
 	ld c, 20
 	call DelayFrames
@ -475,7 +475,7 @@ PrintListMenuEntries::
 	push hl
 	ld bc, SCREEN_WIDTH + 8 ; 1 row down and 8 columns right
 	add hl, bc
-	ld a, "×"
+	ld a, '×'
 	ld [hli], a
 	ld a, [wNamedObjectIndex]
 	push af
@ -503,7 +503,7 @@ PrintListMenuEntries::
 	cp c ; is it this item?
 	jr nz, .nextListEntry
 	dec hl
-	ld a, "▷"
+	ld a, '▷'
 	ld [hli], a
 .nextListEntry
 	ld bc, 2 * SCREEN_WIDTH ; 2 rows
@ -514,7 +514,7 @@ PrintListMenuEntries::
 	jp nz, .loop
 	ld bc, -8
 	add hl, bc
-	ld a, "▼"
+	ld a, '▼'
 	ld [hl], a
 	ret
 .printCancelMenuItem
--- a/home/names.asm
+++ b/home/names.asm
@ -16,7 +16,7 @@ GetMonName::
 	ld bc, NAME_LENGTH - 1
 	call CopyData
 	ld hl, wNameBuffer + NAME_LENGTH - 1
-	ld [hl], "@"
+	ld [hl], '@'
 	pop de
 	pop af
 	ldh [hLoadedROMBank], a
@ -74,7 +74,7 @@ GetMachineName::
 ; now get the machine number and convert it to text
 	ld a, [wNamedObjectIndex]
 	sub TM01 - 1
-	ld b, "0"
+	ld b, '0'
 .FirstDigit
 	sub 10
 	jr c, .SecondDigit
@ -87,11 +87,11 @@ GetMachineName::
 	ld [de], a
 	inc de
 	pop af
-	ld b, "0"
+	ld b, '0'
 	add b
 	ld [de], a
 	inc de
-	ld a, "@"
+	ld a, '@'
 	ld [de], a
 	pop af
 	ld [wNamedObjectIndex], a
--- a/home/names2.asm
+++ b/home/names2.asm
@ -74,7 +74,7 @@ GetName::
 	ld e, l
 .nextChar
 	ld a, [hli]
-	cp "@"
+	cp '@'
 	jr nz, .nextChar
 	inc c
 	ld a, b
--- a/home/pokemon.asm
+++ b/home/pokemon.asm
@ -349,11 +349,11 @@ PrintStatusCondition::
 	pop de
 	jr nz, PrintStatusConditionNotFainted
 ; if the pokemon's HP is 0, print "FNT"
-	ld a, "F"
+	ld a, 'F'
 	ld [hli], a
-	ld a, "N"
+	ld a, 'N'
 	ld [hli], a
-	ld [hl], "T"
+	ld [hl], 'T'
 	and a
 	ret

@ -365,7 +365,7 @@ PrintStatusConditionNotFainted::
 ; hl = destination address
 ; [wLoadedMonLevel] = level
 PrintLevel::
-	ld a, "<LV>" ; ":L" tile ID
+	ld a, '<LV>' ; ":L" tile ID
 	ld [hli], a
 	ld c, 2 ; number of digits
 	ld a, [wLoadedMonLevel] ; level
@ -381,7 +381,7 @@ PrintLevel::
 ; hl = destination address
 ; [wLoadedMonLevel] = level
 PrintLevelFull::
-	ld a, "<LV>" ; ":L" tile ID
+	ld a, '<LV>' ; ":L" tile ID
 	ld [hli], a
 	ld c, 3 ; number of digits
 	ld a, [wLoadedMonLevel] ; level
--- a/home/print_bcd.asm
+++ b/home/print_bcd.asm
@ -20,7 +20,7 @@ PrintBCDNumber::
 	jr z, .loop
 	bit BIT_LEADING_ZEROES, b
 	jr nz, .loop
-	ld [hl], "¥"
+	ld [hl], '¥'
 	inc hl
 .loop
 	ld a, [de]
@ -40,10 +40,10 @@ PrintBCDNumber::
 .skipRightAlignmentAdjustment
 	bit BIT_MONEY_SIGN, b
 	jr z, .skipCurrencySymbol
-	ld [hl], "¥"
+	ld [hl], '¥'
 	inc hl
 .skipCurrencySymbol
-	ld [hl], "0"
+	ld [hl], '0'
 	call PrintLetterDelay
 	inc hl
 .done
@ -59,13 +59,13 @@ PrintBCDDigit::
 ; if bit 7 is set, then no numbers have been printed yet
 	bit BIT_MONEY_SIGN, b
 	jr z, .skipCurrencySymbol
-	ld [hl], "¥"
+	ld [hl], '¥'
 	inc hl
 	res BIT_MONEY_SIGN, b
 .skipCurrencySymbol
 	res BIT_LEADING_ZEROES, b
 .outputDigit
-	add "0"
+	add '0'
 	ld [hli], a
 	jp PrintLetterDelay
 .zeroDigit
--- a/home/print_num.asm
+++ b/home/print_num.asm
@ -118,14 +118,14 @@ ENDM
 	call .PrintLeadingZero
 	jr .next
 .past
-	ld a, "0"
+	ld a, '0'
 	add c
 	ld [hl], a
 .next

 	call .NextDigit
 .ones
-	ld a, "0"
+	ld a, '0'
 	add b
 	ld [hli], a
 	pop de
@ -202,7 +202,7 @@ ENDM
 	or c
 	jr z, .PrintLeadingZero

-	ld a, "0"
+	ld a, '0'
 	add c
 	ld [hl], a
 	ldh [hPastLeadingZeros], a
@ -211,7 +211,7 @@ ENDM
 .PrintLeadingZero:
 	bit BIT_LEADING_ZEROES, d
 	ret z
-	ld [hl], "0"
+	ld [hl], '0'
 	ret

 .NextDigit:
--- a/home/text.asm
+++ b/home/text.asm
@ -3,7 +3,7 @@ TextBoxBorder::

 	; top row
 	push hl
-	ld a, "┌"
+	ld a, '┌'
 	ld [hli], a
 	inc a ; "─"
 	call .PlaceChars
@ -17,11 +17,11 @@ TextBoxBorder::
 	; middle rows
 .next
 	push hl
-	ld a, "│"
+	ld a, '│'
 	ld [hli], a
-	ld a, " "
+	ld a, ' '
 	call .PlaceChars
-	ld [hl], "│"
+	ld [hl], '│'
 	pop hl

 	ld de, SCREEN_WIDTH
@ -30,11 +30,11 @@ TextBoxBorder::
 	jr nz, .next

 	; bottom row
-	ld a, "└"
+	ld a, '└'
 	ld [hli], a
-	ld a, "─"
+	ld a, '─'
 	call .PlaceChars
-	ld [hl], "┘"
+	ld [hl], '┘'
 	ret

 .PlaceChars::
@ -51,7 +51,7 @@ PlaceString::

 PlaceNextChar::
 	ld a, [de]
-	cp "@"
+	cp '@'
 	jr nz, .NotTerminator
 	ld b, h
 	ld c, l
@ -59,7 +59,7 @@ PlaceNextChar::
 	ret

 .NotTerminator
-	cp "<NEXT>"
+	cp '<NEXT>'
 	jr nz, .NotNext
 	ld bc, 2 * SCREEN_WIDTH
 	ldh a, [hUILayoutFlags]
@ -73,7 +73,7 @@ PlaceNextChar::
 	jp NextChar

 .NotNext
-	cp "<LINE>"
+	cp '<LINE>'
 	jr nz, .NotLine
 	pop hl
 	hlcoord 1, 16
@ -83,26 +83,26 @@ PlaceNextChar::
 .NotLine

 ; Check against a dictionary
-	dict "<NULL>",    NullChar
-	dict "<SCROLL>",  _ContTextNoPause
-	dict "<_CONT>",   _ContText
-	dict "<PARA>",    Paragraph
-	dict "<PAGE>",    PageChar
-	dict "<PLAYER>",  PrintPlayerName
-	dict "<RIVAL>",   PrintRivalName
-	dict "#",         PlacePOKe
-	dict "<PC>",      PCChar
-	dict "<ROCKET>",  RocketChar
-	dict "<TM>",      TMChar
-	dict "<TRAINER>", TrainerChar
-	dict "<CONT>",    ContText
-	dict "<……>",      SixDotsChar
-	dict "<DONE>",    DoneText
-	dict "<PROMPT>",  PromptText
-	dict "<PKMN>",    PlacePKMN
-	dict "<DEXEND>",  PlaceDexEnd
-	dict "<TARGET>",  PlaceMoveTargetsName
-	dict "<USER>",    PlaceMoveUsersName
+	dict '<NULL>',    NullChar
+	dict '<SCROLL>',  _ContTextNoPause
+	dict '<_CONT>',   _ContText
+	dict '<PARA>',    Paragraph
+	dict '<PAGE>',    PageChar
+	dict '<PLAYER>',  PrintPlayerName
+	dict '<RIVAL>',   PrintRivalName
+	dict '#',         PlacePOKe
+	dict '<PC>',      PCChar
+	dict '<ROCKET>',  RocketChar
+	dict '<TM>',      TMChar
+	dict '<TRAINER>', TrainerChar
+	dict '<CONT>',    ContText
+	dict '<……>',      SixDotsChar
+	dict '<DONE>',    DoneText
+	dict '<PROMPT>',  PromptText
+	dict '<PKMN>',    PlacePKMN
+	dict '<DEXEND>',  PlaceDexEnd
+	dict '<TARGET>',  PlaceMoveTargetsName
+	dict '<USER>',    PlaceMoveUsersName

 	ld [hli], a
 	call PrintLetterDelay
@ -202,7 +202,7 @@ ContCharText::
 	text_end

 PlaceDexEnd::
-	ld [hl], "."
+	ld [hl], '.'
 	pop hl
 	ret

@ -210,12 +210,12 @@ PromptText::
 	ld a, [wLinkState]
 	cp LINK_STATE_BATTLING
 	jp z, .ok
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 .ok
 	call ProtectedDelay3
 	call ManualTextScroll
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16

 DoneText::
@ -229,7 +229,7 @@ DoneText::

 Paragraph::
 	push de
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 	call ProtectedDelay3
 	call ManualTextScroll
@ -246,12 +246,12 @@ PageChar::
 	ldh a, [hUILayoutFlags]
 	bit BIT_PAGE_CHAR_IS_NEXT, a
 	jr z, .pageChar
-	ld a, "<NEXT>"
+	ld a, '<NEXT>'
 	jp PlaceNextChar.NotTerminator

 .pageChar
 	push de
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 	call ProtectedDelay3
 	call ManualTextScroll
@ -267,13 +267,13 @@ PageChar::
 	jp NextChar

 _ContText::
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16
 	call ProtectedDelay3
 	push de
 	call ManualTextScroll
 	pop de
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16
 _ContTextNoPause::
 	push de
@ -298,7 +298,7 @@ ScrollTextUpOneLine::
 	dec b
 	jr nz, .copyText
 	hlcoord 1, 16
-	ld a, " "
+	ld a, ' '
 	ld b, SCREEN_WIDTH - 2
 .clearText
 	ld [hli], a
@ -443,12 +443,12 @@ TextCommand_PROMPT_BUTTON::
 	ld a, [wLinkState]
 	cp LINK_STATE_BATTLING
 	jp z, TextCommand_WAIT_BUTTON
-	ld a, "▼"
+	ld a, '▼'
 	ldcoord_a 18, 16 ; place down arrow in lower right corner of dialogue text box
 	push bc
 	call ManualTextScroll ; blink arrow and wait for A or B to be pressed
 	pop bc
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16 ; overwrite down arrow with blank space
 	pop hl
 	jp NextTextCommand
@ -456,7 +456,7 @@ TextCommand_PROMPT_BUTTON::
 TextCommand_SCROLL::
 ; pushes text up two lines and sets the BC cursor to the border tile
 ; below the first character column of the text box.
-	ld a, " "
+	ld a, ' '
 	ldcoord_a 18, 16 ; place blank space in lower right corner of dialogue text box
 	call ScrollTextUpOneLine
 	call ScrollTextUpOneLine
@ -571,7 +571,7 @@ TextCommand_DOTS::
 	ld l, c

 .loop
-	ld a, "…"
+	ld a, '…'
 	ld [hli], a
 	push de
 	call Joypad
--- a/home/vcopy.asm
+++ b/home/vcopy.asm
@ -19,7 +19,7 @@ GetRowColAddressBgMap::
 ; clears a VRAM background map with blank space tiles
 ; INPUT: h - high byte of background tile map address in VRAM
 ClearBgMap::
-	ld a, " "
+	ld a, ' '
 	jr .next
 	ld a, l
 .next
--- a/home/window.asm
+++ b/home/window.asm
@ -151,7 +151,7 @@ PlaceMenuCursor::
 	jr nz, .oldMenuItemLoop
 .checkForArrow1
 	ld a, [hl]
-	cp "▶" ; was an arrow next to the previously selected menu item?
+	cp '▶' ; was an arrow next to the previously selected menu item?
 	jr nz, .skipClearingArrow
 .clearArrow
 	ld a, [wTileBehindCursor]
@ -175,11 +175,11 @@ PlaceMenuCursor::
 	jr nz, .currentMenuItemLoop
 .checkForArrow2
 	ld a, [hl]
-	cp "▶" ; has the right arrow already been placed?
+	cp '▶' ; has the right arrow already been placed?
 	jr z, .skipSavingTile ; if so, don't lose the saved tile
 	ld [wTileBehindCursor], a ; save tile before overwriting with right arrow
 .skipSavingTile
-	ld a, "▶" ; place right arrow
+	ld a, '▶' ; place right arrow
 	ld [hl], a
 	ld a, l
 	ld [wMenuCursorLocation], a
@ -199,7 +199,7 @@ PlaceUnfilledArrowMenuCursor::
 	ld l, a
 	ld a, [wMenuCursorLocation + 1]
 	ld h, a
-	ld [hl], "▷"
+	ld [hl], '▷'
 	ld a, b
 	ret

@ -209,7 +209,7 @@ EraseMenuCursor::
 	ld l, a
 	ld a, [wMenuCursorLocation + 1]
 	ld h, a
-	ld [hl], " "
+	ld [hl], ' '
 	ret

 ; This toggles a blinking down arrow at hl on and off after a delay has passed.
@ -223,7 +223,7 @@ EraseMenuCursor::
 HandleDownArrowBlinkTiming::
 	ld a, [hl]
 	ld b, a
-	ld a, "▼"
+	ld a, '▼'
 	cp b
 	jr nz, .downArrowOff
 .downArrowOn
@ -235,7 +235,7 @@ HandleDownArrowBlinkTiming::
 	dec a
 	ldh [hDownArrowBlinkCount2], a
 	ret nz
-	ld a, " "
+	ld a, ' '
 	ld [hl], a
 	ld a, $ff
 	ldh [hDownArrowBlinkCount1], a
@ -257,7 +257,7 @@ HandleDownArrowBlinkTiming::
 	ret nz
 	ld a, $06
 	ldh [hDownArrowBlinkCount2], a
-	ld a, "▼"
+	ld a, '▼'
 	ld [hl], a
 	ret

--- a/macros/asserts.asm
+++ b/macros/asserts.asm
@ -1,18 +1,14 @@
 ; Macros to verify assumptions about the data or code

-MACRO _redef_current_label
+MACRO? _redef_current_label
 	IF DEF(\1)
 		PURGE \1
 	ENDC
 	IF _NARG == 3 + (\3)
 		DEF \1 EQUS "\<_NARG>"
-	ELIF DEF(..)
-		IF .. - @ == 0
-			DEF \1 EQUS "{..}"
-		ENDC
-	ELIF DEF(.)
-		if . - @ == 0
-			DEF \1 EQUS "{.}"
+	ELIF STRLEN(#__SCOPE__)
+		IF {{__SCOPE__}} - @ == 0
+			DEF \1 EQUS #{__SCOPE__}
 		ENDC
 	ENDC
 	if !DEF(\1)
@ -21,12 +17,12 @@ MACRO _redef_current_label
 	ENDC
 ENDM

-MACRO table_width
+MACRO? table_width
 	DEF CURRENT_TABLE_WIDTH = \1
 	_redef_current_label CURRENT_TABLE_START, "._table_width\@", 2, \#
 ENDM

-MACRO assert_table_length
+MACRO? assert_table_length
 	DEF w = \1
 	DEF x = w * CURRENT_TABLE_WIDTH
 	DEF y = @ - {CURRENT_TABLE_START}
@ -34,7 +30,7 @@ MACRO assert_table_length
 		"bytes, for {d:x} total; but got {d:y} bytes"
 ENDM

-MACRO assert_max_table_length
+MACRO? assert_max_table_length
 	DEF w = \1
 	DEF x = w * CURRENT_TABLE_WIDTH
 	DEF y = @ - {CURRENT_TABLE_START}
@ -42,24 +38,24 @@ MACRO assert_max_table_length
 		"{d:CURRENT_TABLE_WIDTH} bytes, for maximum {d:x} total; but got {d:y} bytes"
 ENDM

-MACRO list_start
+MACRO? list_start
 	DEF list_index = 0
 	_redef_current_label CURRENT_LIST_START, "._list_start\@", 1, \#
 ENDM

-MACRO li
+MACRO? li
 	ASSERT STRFIND(\1, "@") == -1, "String terminator \"@\" in list entry: \1"
 	db \1, "@"
 	DEF list_index += 1
 ENDM

-MACRO assert_list_length
+MACRO? assert_list_length
 	DEF x = \1
 	ASSERT x == list_index, \
 		"{CURRENT_LIST_START}: expected {d:x} entries, got {d:list_index}"
 ENDM

-MACRO nybble_array
+MACRO? nybble_array
 	DEF CURRENT_NYBBLE_ARRAY_VALUE = 0
 	DEF CURRENT_NYBBLE_ARRAY_LENGTH = 0
 	IF _NARG == 1
@ -70,7 +66,7 @@ MACRO nybble_array
 	ENDC
 ENDM

-MACRO nybble
+MACRO? nybble
 	ASSERT 0 <= (\1) && (\1) < $10, "nybbles must be 0-15"
 	DEF CURRENT_NYBBLE_ARRAY_VALUE = (\1) | (CURRENT_NYBBLE_ARRAY_VALUE << 4)
 	DEF CURRENT_NYBBLE_ARRAY_LENGTH += 1
@ -80,7 +76,7 @@ MACRO nybble
 	ENDC
 ENDM

-MACRO end_nybble_array
+MACRO? end_nybble_array
 	IF CURRENT_NYBBLE_ARRAY_LENGTH % 2
 		db CURRENT_NYBBLE_ARRAY_VALUE << 4
 	ENDC
@ -94,7 +90,7 @@ MACRO end_nybble_array
 	ENDC
 ENDM

-MACRO bit_array
+MACRO? bit_array
 	DEF CURRENT_BIT_ARRAY_VALUE = 0
 	DEF CURRENT_BIT_ARRAY_LENGTH = 0
 	IF _NARG == 1
@ -105,7 +101,7 @@ MACRO bit_array
 	ENDC
 ENDM

-MACRO dbit
+MACRO? dbit
 	ASSERT (\1) == 0 || (\1) == 1, "bits must be 0 or 1"
 	DEF CURRENT_BIT_ARRAY_VALUE |= (\1) << (CURRENT_BIT_ARRAY_LENGTH % 8)
 	DEF CURRENT_BIT_ARRAY_LENGTH += 1
@ -115,7 +111,7 @@ MACRO dbit
 	ENDC
 ENDM

-MACRO end_bit_array
+MACRO? end_bit_array
 	IF CURRENT_BIT_ARRAY_LENGTH % 8
 		db CURRENT_BIT_ARRAY_VALUE
 	ENDC
@ -129,7 +125,7 @@ MACRO end_bit_array
 	ENDC
 ENDM

-MACRO def_grass_wildmons
+MACRO? def_grass_wildmons
 ;\1: encounter rate
 	DEF CURRENT_GRASS_WILDMONS_RATE = \1
 	REDEF CURRENT_GRASS_WILDMONS_LABEL EQUS "._def_grass_wildmons_\1"
@ -137,7 +133,7 @@ MACRO def_grass_wildmons
 	db \1
 ENDM

-MACRO end_grass_wildmons
+MACRO? end_grass_wildmons
 	DEF x = @ - {CURRENT_GRASS_WILDMONS_LABEL}
 	IF CURRENT_GRASS_WILDMONS_RATE == 0
 		ASSERT 1 == x, \
@ -148,7 +144,7 @@ MACRO end_grass_wildmons
 	ENDC
 ENDM

-MACRO def_water_wildmons
+MACRO? def_water_wildmons
 ;\1: encounter rate
 	DEF CURRENT_WATER_WILDMONS_RATE = \1
 	REDEF CURRENT_WATER_WILDMONS_LABEL EQUS "._def_water_wildmons_\1"
@ -156,7 +152,7 @@ MACRO def_water_wildmons
 	db \1
 ENDM

-MACRO end_water_wildmons
+MACRO? end_water_wildmons
 	DEF x = @ - {CURRENT_WATER_WILDMONS_LABEL}
 	IF CURRENT_WATER_WILDMONS_RATE == 0
 		ASSERT 1 == x, \
--- a/macros/code.asm
+++ b/macros/code.asm
@ -1,10 +1,10 @@
 ; Syntactic sugar macros

-MACRO lb ; r, hi, lo
+MACRO? lb ; r, hi, lo
 	ld \1, ((\2) & $ff) << 8 + ((\3) & $ff)
 ENDM

-MACRO ldpal
+MACRO? ldpal
 	ld \1, \2 << 6 | \3 << 4 | \4 << 2 | \5
 ENDM

--- a/macros/const.asm
+++ b/macros/const.asm
@ -1,6 +1,6 @@
 ; Enumerate constants

-MACRO const_def
+MACRO? const_def
 	IF _NARG >= 1
 		DEF const_value = \1
 	ELSE
@ -13,22 +13,22 @@ MACRO const_def
 	ENDC
 ENDM

-MACRO const
+MACRO? const
 	DEF \1 EQU const_value
 	DEF const_value += const_inc
 ENDM

-MACRO const_export
+MACRO? const_export
 	const \1
 	EXPORT \1
 ENDM

-MACRO shift_const
+MACRO? shift_const
 	DEF \1 EQU 1 << const_value
 	DEF const_value += const_inc
 ENDM

-MACRO const_skip
+MACRO? const_skip
 	if _NARG >= 1
 		DEF const_value += const_inc * (\1)
 	else
@ -36,7 +36,7 @@ MACRO const_skip
 	endc
 ENDM

-MACRO const_next
+MACRO? const_next
 	if (const_value > 0 && \1 < const_value) || (const_value < 0 && \1 > const_value)
 		fail "const_next cannot go backwards from {const_value} to \1"
 	else
@ -44,12 +44,12 @@ MACRO const_next
 	endc
 ENDM

-MACRO dw_const
+MACRO? dw_const
 	dw \1
 	const \2
 ENDM

-MACRO rb_skip
+MACRO? rb_skip
 	IF _NARG == 1
 		rsset _RS + \1
 	ELSE
--- a/macros/coords.asm
+++ b/macros/coords.asm
@ -1,4 +1,4 @@
-MACRO validate_coords
+MACRO? validate_coords
 	IF _NARG >= 4
 		IF \1 >= \3
 			fail "x coord out of range"
@ -11,19 +11,19 @@ MACRO validate_coords
 	ENDC
 ENDM

-MACRO hlcoord
+MACRO? hlcoord
 	coord hl, \#
 ENDM

-MACRO bccoord
+MACRO? bccoord
 	coord bc, \#
 ENDM

-MACRO decoord
+MACRO? decoord
 	coord de, \#
 ENDM

-MACRO coord
+MACRO? coord
 ; register, x, y[, origin]
 	validate_coords \2, \3
 	IF _NARG >= 4
@ -33,19 +33,19 @@ MACRO coord
 	ENDC
 ENDM

-MACRO hlbgcoord
+MACRO? hlbgcoord
 	bgcoord hl, \#
 ENDM

-MACRO bcbgcoord
+MACRO? bcbgcoord
 	bgcoord bc, \#
 ENDM

-MACRO debgcoord
+MACRO? debgcoord
 	bgcoord de, \#
 ENDM

-MACRO bgcoord
+MACRO? bgcoord
 ; register, x, y[, origin]
 	validate_coords \2, \3, TILEMAP_WIDTH, TILEMAP_HEIGHT
 	IF _NARG >= 4
@ -55,30 +55,30 @@ MACRO bgcoord
 	ENDC
 ENDM

-MACRO hlowcoord
+MACRO? hlowcoord
 	owcoord hl, \#
 ENDM

-MACRO bcowcoord
+MACRO? bcowcoord
 	owcoord bc, \#
 ENDM

-MACRO deowcoord
+MACRO? deowcoord
 	owcoord de, \#
 ENDM

-MACRO owcoord
+MACRO? owcoord
 ; register, x, y, map width
 	ld \1, wOverworldMap + ((\2) + 3) + (((\3) + 3) * ((\4) + (3 * 2)))
 ENDM

-MACRO event_displacement
+MACRO? event_displacement
 ; map width, x blocks, y blocks
 	dw (wOverworldMap + 7 + (\1) + ((\1) + 6) * ((\3) >> 1) + ((\2) >> 1))
 	db \3, \2
 ENDM

-MACRO dwcoord
+MACRO? dwcoord
 ; x, y
 	validate_coords \1, \2
 	IF _NARG >= 3
@ -88,7 +88,7 @@ MACRO dwcoord
 	ENDC
 ENDM

-MACRO ldcoord_a
+MACRO? ldcoord_a
 ; x, y[, origin]
 	validate_coords \1, \2
 	IF _NARG >= 3
@ -98,7 +98,7 @@ MACRO ldcoord_a
 	ENDC
 ENDM

-MACRO lda_coord
+MACRO? lda_coord
 ; x, y[, origin]
 	validate_coords \1, \2
 	IF _NARG >= 3
@ -108,7 +108,7 @@ MACRO lda_coord
 	ENDC
 ENDM

-MACRO dbmapcoord
+MACRO? dbmapcoord
 ; x, y
 	db \2, \1
 ENDM
--- a/macros/data.asm
+++ b/macros/data.asm
@ -2,19 +2,19 @@

 DEF percent EQUS "* $ff / 100"

-MACRO bcd2
+MACRO? bcd2
 	dn ((\1) / 1000) % 10, ((\1) / 100) % 10
 	dn ((\1) / 10) % 10, (\1) % 10
 ENDM

-MACRO bcd3
+MACRO? bcd3
 	dn ((\1) / 100000) % 10, ((\1) / 10000) % 10
 	dn ((\1) / 1000) % 10, ((\1) / 100) % 10
 	dn ((\1) / 10) % 10, (\1) % 10
 ENDM

 ; used in data/pokemon/base_stats/*.asm
-MACRO tmhm
+MACRO? tmhm
 	; initialize bytes to 0
 	FOR n, (NUM_TM_HM + 7) / 8
 		DEF _tm{d:n} = 0
@ -40,49 +40,49 @@ ENDM

 ; Constant data (db, dw, dl) macros

-MACRO dbw
+MACRO? dbw
 	db \1
 	dw \2
 ENDM

-MACRO dwb
+MACRO? dwb
 	dw \1
 	db \2
 ENDM

-MACRO dn ; nybbles
+MACRO? dn ; nybbles
 	REPT _NARG / 2
 		db ((\1) << 4) | (\2)
 		SHIFT 2
 	ENDR
 ENDM

-MACRO dc ; "crumbs"
+MACRO? dc ; "crumbs"
 	REPT _NARG / 4
 		db ((\1) << 6) | ((\2) << 4) | ((\3) << 2) | (\4)
 		SHIFT 4
 	ENDR
 ENDM

-MACRO bigdw ; big-endian word
+MACRO? bigdw ; big-endian word
 	db HIGH(\1), LOW(\1)
 ENDM

-MACRO dba ; dbw bank, address
+MACRO? dba ; dbw bank, address
 	REPT _NARG
 		dbw BANK(\1), \1
 		SHIFT
 	ENDR
 ENDM

-MACRO dab ; dwb address, bank
+MACRO? dab ; dwb address, bank
 	REPT _NARG
 		dwb \1, BANK(\1)
 		SHIFT
 	ENDR
 ENDM

-MACRO dname
+MACRO? dname
 	IF _NARG == 2
 		DEF n = \2
 	ELSE
@ -91,7 +91,7 @@ MACRO dname
 	ASSERT STRFIND(\1, "@") == -1, "String terminator \"@\" in name: \1"
 	ASSERT CHARLEN(\1) <= n, "Name longer than {d:n} characters: \1"
 	db \1
-	ds n - CHARLEN(\1), "@"
+	ds n - CHARLEN(\1), '@'
 ENDM

 MACRO sine_table
--- a/macros/gfx.asm
+++ b/macros/gfx.asm
@ -1,4 +1,4 @@
-MACRO RGB
+MACRO? RGB
 	REPT _NARG / 3
 		dw palred (\1) + palgreen (\2) + palblue (\3)
 		SHIFT 3
@ -16,7 +16,7 @@ DEF color    EQUS "+ COLOR_SIZE *"
 DEF tiles EQUS "* TILE_SIZE"
 DEF tile  EQUS "+ TILE_SIZE *"

-MACRO dbsprite
+MACRO? dbsprite
 ; x tile, y tile, x pixel, y pixel, vtile offset, attributes
 	db (\2 * TILE_WIDTH) % $100 + \4, (\1 * TILE_WIDTH) % $100 + \3, \5, \6
 ENDM
--- a/macros/predef.asm
+++ b/macros/predef.asm
@ -1,32 +1,32 @@
-MACRO predef_id
+MACRO? predef_id
 	ld a, (\1Predef - PredefPointers) / 3
 ENDM

-MACRO predef
+MACRO? predef
 	predef_id \1
 	call Predef
 ENDM

-MACRO predef_jump
+MACRO? predef_jump
 	predef_id \1
 	jp Predef
 ENDM


-MACRO tx_pre_id
+MACRO? tx_pre_id
 	ld a, (\1_id - TextPredefs) / 2 + 1
 ENDM

-MACRO tx_pre
+MACRO? tx_pre
 	tx_pre_id \1
 	call PrintPredefTextID
 ENDM

-MACRO tx_pre_jump
+MACRO? tx_pre_jump
 	tx_pre_id \1
 	jp PrintPredefTextID
 ENDM

-MACRO db_tx_pre
+MACRO? db_tx_pre
 	db (\1_id - TextPredefs) / 2 + 1
 ENDM
--- a/macros/ram.asm
+++ b/macros/ram.asm
@ -1,6 +1,6 @@
 ; Used in wram.asm

-MACRO flag_array
+MACRO? flag_array
 	ds ((\1) + 7) / 8
 ENDM

--- a/macros/scripts/maps.asm
+++ b/macros/scripts/maps.asm
@ -174,7 +174,7 @@ MACRO connection
 		DEF _tgt = 0
 	ENDC

-	IF !STRCMP("\1", "north")
+	IF "\1" === "north"
 		DEF _blk = \3_WIDTH * (\3_HEIGHT - 3) + _src
 		DEF _map = _tgt
 		DEF _win = (\3_WIDTH + 6) * \3_HEIGHT + 1
@ -185,7 +185,7 @@ MACRO connection
 			DEF _len = \3_WIDTH
 		ENDC

-	ELIF !STRCMP("\1", "south")
+	ELIF "\1" === "south"
 		DEF _blk = _src
 		DEF _map = (CURRENT_MAP_WIDTH + 6) * (CURRENT_MAP_HEIGHT + 3) + _tgt
 		DEF _win = \3_WIDTH + 7
@ -196,7 +196,7 @@ MACRO connection
 			DEF _len = \3_WIDTH
 		ENDC

-	ELIF !STRCMP("\1", "west")
+	ELIF "\1" === "west"
 		DEF _blk = (\3_WIDTH * _src) + \3_WIDTH - 3
 		DEF _map = (CURRENT_MAP_WIDTH + 6) * _tgt
 		DEF _win = (\3_WIDTH + 6) * 2 - 6
@ -207,7 +207,7 @@ MACRO connection
 			DEF _len = \3_HEIGHT
 		ENDC

-	ELIF !STRCMP("\1", "east")
+	ELIF "\1" === "east"
 		DEF _blk = (\3_WIDTH * _src)
 		DEF _map = (CURRENT_MAP_WIDTH + 6) * _tgt + CURRENT_MAP_WIDTH + 3
 		DEF _win = \3_WIDTH + 7
--- a/macros/vc.asm
+++ b/macros/vc.asm
@ -1,10 +1,10 @@
-MACRO vc_hook
+MACRO? vc_hook
 	IF DEF(_YELLOW_VC)
 	.VC_\1::
 	ENDC
 ENDM

-MACRO vc_patch
+MACRO? vc_patch
 	IF DEF(_YELLOW_VC)
 		ASSERT !DEF(CURRENT_VC_PATCH), "Already started a vc_patch"
 		DEF CURRENT_VC_PATCH EQUS "\1"
@ -12,7 +12,7 @@ MACRO vc_patch
 	ENDC
 ENDM

-MACRO vc_patch_end
+MACRO? vc_patch_end
 	IF DEF(_YELLOW_VC)
 		ASSERT DEF(CURRENT_VC_PATCH), "No vc_patch started"
 	.VC_{CURRENT_VC_PATCH}_End::
@ -20,7 +20,7 @@ MACRO vc_patch_end
 	ENDC
 ENDM

-MACRO vc_assert
+MACRO? vc_assert
 	IF DEF(_YELLOW_VC)
 		ASSERT \#
 	ENDC
--- a/ram/wram.asm
+++ b/ram/wram.asm
@ -1064,6 +1064,7 @@ wDownscaledMonSize::
 ; FormatMovesString stores the number of moves minus one here
 wNumMovesMinusOne:: db

+; This union spans 20 bytes.
 UNION
 ; storage buffer for various name strings
 wNameBuffer:: ds NAME_BUFFER_LENGTH
@ -1079,7 +1080,8 @@ wPayDayMoney:: ds 3

 NEXTU
 ; evolution data for one mon
-wEvoDataBuffer:: ds 4 * 3 + 1 ; enough for Eevee's three 4-byte evolutions and 0 terminator
+wEvoDataBuffer:: ds NUM_EVOS_IN_BUFFER * 4 + 1 ; enough for Eevee's three 4-byte evolutions and 0 terminator
+wEvoDataBufferEnd::

 NEXTU
 wBattleMenuCurrentPP:: db
@ -1239,7 +1241,7 @@ wPartyMenuBlkPacket:: ds $30
 NEXTU
 	ds 29
 ; storage buffer for various strings
-wStringBuffer:: ds 20
+wStringBuffer:: ds NAME_BUFFER_LENGTH

 NEXTU
 	ds 29
@ -1381,7 +1383,7 @@ wTrainerPicPointer:: dw
 	ds 1

 UNION
-wTempMoveNameBuffer:: ds 14
+wTempMoveNameBuffer:: ds ITEM_NAME_LENGTH + 1

 NEXTU
 ; The name of the mon that is learning a move.
@ -2393,12 +2395,12 @@ wEventFlags:: flag_array NUM_EVENTS

 UNION
 wGrassRate:: db
-wGrassMons:: ds 10 * 2
+wGrassMons:: ds WILDDATA_LENGTH - 1

 	ds 8

 wWaterRate:: db
-wWaterMons:: ds 10 * 2
+wWaterMons:: ds WILDDATA_LENGTH - 1

 NEXTU
 ; linked game's trainer name
--- a/rgbdscheck.asm
+++ b/rgbdscheck.asm
@ -1,6 +1,6 @@
-IF !DEF(__RGBDS_MAJOR__) || !DEF(__RGBDS_MINOR__) || !DEF(__RGBDS_PATCH__)
-	fail "pokeyellow requires rgbds v0.9.3 or newer."
+IF !DEF(__RGBDS_MAJOR__)
+	fail "pokeyellow requires rgbds v1.0.0 or newer."
 ENDC
-IF __RGBDS_MAJOR__ == 0 && (__RGBDS_MINOR__ < 9 || (__RGBDS_MINOR__ == 9 && __RGBDS_PATCH__ < 3))
-	fail "pokeyellow requires rgbds v0.9.3 or newer."
+IF __RGBDS_MAJOR__ < 1
+	fail "pokeyellow requires rgbds v1.0.0 or newer."
 ENDC
--- a/scripts/Route23.asm
+++ b/scripts/Route23.asm
@ -86,7 +86,7 @@ Route23CopyBadgeTextScript:
 	ld a, [hli]
 	ld [de], a
 	inc de
-	cp "@"
+	cp '@'
 	jr nz, .copyTextLoop
 	ret

--- a/tools/make_patch.c
+++ b/tools/make_patch.c
@ -1,5 +1,5 @@
 #define PROGRAM_NAME "make_patch"
-#define USAGE_OPTS "values.sym patched.gbc original.gbc vc.patch.template vc.patch"
+#define USAGE_OPTS "[--ignore addr:size] values.sym patched.gbc original.gbc vc.patch.template vc.patch"

 #include "common.h"

@ -127,7 +127,7 @@ struct Symbol *parse_symbols(const char *filename) {
 		if (c == EOF || c == '\n' || c == '\r' || c == ';' || (state == SYM_NAME && (c == ' ' || c == '\t'))) {
 			if (state == SYM_NAME) {
 				// The symbol name has ended; append the buffered symbol
-				buffer_append(buffer, &(char []){'\0'});
+				buffer_append(buffer, &(char){'\0'});
 				symbol_append(&symbols, buffer->data, bank, address);
 			}
 			// Skip to the next line, ignoring anything after the symbol value and name
@ -143,7 +143,7 @@ struct Symbol *parse_symbols(const char *filename) {
 				// The symbol value or name has started; buffer its contents
 				if (++state == SYM_NAME) {
 					// The symbol name has started; parse the buffered value
-					buffer_append(buffer, &(char []){'\0'});
+					buffer_append(buffer, &(char){'\0'});
 					parse_symbol_value(buffer->data, &bank, &address);
 				}
 				buffer->size = 0;
@ -349,7 +349,15 @@ void skip_to_next_line(FILE *restrict input, FILE *restrict output) {
 	}
 }

-struct Buffer *process_template(const char *template_filename, const char *patch_filename, FILE *restrict new_rom, FILE *restrict orig_rom, const struct Symbol *symbols) {
+struct Buffer *process_template(
+	const char *template_filename,
+	const char *patch_filename,
+	FILE *restrict new_rom,
+	FILE *restrict orig_rom,
+	const struct Symbol *symbols,
+	unsigned int ignore_addr,
+	unsigned int ignore_size
+) {
 	FILE *input = xfopen(template_filename, 'r');
 	FILE *output = xfopen(patch_filename, 'w');

@ -358,6 +366,11 @@ struct Buffer *process_template(const char *template_filename, const char *patch

 	// The ROM checksum will always differ
 	buffer_append(patches, &(struct Patch){0x14e, 2});
+	// The ignored data will always differ
+	unsigned int rom_size = (unsigned int)xfsize("", orig_rom);
+	if (ignore_size > 0 && ignore_size <= rom_size && ignore_addr <= rom_size - ignore_size) {
+		buffer_append(patches, &(struct Patch){ignore_addr, ignore_size});
+	}

 	// Fill in the template
 	const struct Symbol *current_hook = NULL;
@ -375,7 +388,7 @@ struct Buffer *process_template(const char *template_filename, const char *patch
 			for (c = getc(input); c != EOF && c != '}'; c = getc(input)) {
 				buffer_append(buffer, &c);
 			}
-			buffer_append(buffer, &(char []){'\0'});
+			buffer_append(buffer, &(char){'\0'});
 			// Interpret the command in the context of the current patch
 			interpret_command(buffer->data, current_hook, symbols, patches, new_rom, orig_rom, output);
 			break;
@ -404,7 +417,7 @@ struct Buffer *process_template(const char *template_filename, const char *patch
 					buffer_append(buffer, &c);
 				}
 			}
-			buffer_append(buffer, &(char []){'\0'});
+			buffer_append(buffer, &(char){'\0'});
 			// The current patch should have a corresponding ".VC_" label
 			current_hook = symbol_find_cat(symbols, ".VC_", buffer->data);
 			skip_to_next_line(input, output);
@ -458,19 +471,53 @@ bool verify_completeness(FILE *restrict orig_rom, FILE *restrict new_rom, struct
 	}
 }

+void parse_args(int argc, char *argv[], unsigned int *ignore_addr, unsigned int *ignore_size) {
+	struct option long_options[] = {
+		{"ignore", required_argument, 0, 'i'},
+		{"help", no_argument, 0, 'h'},
+		{0}
+	};
+	for (int opt; (opt = getopt_long(argc, argv, "h", long_options)) != -1;) {
+		switch (opt) {
+		case 'i': {
+			char *colon = strchr(optarg, ':');
+			if (colon) {
+				*colon++ = '\0';
+				*ignore_addr = strtoul(optarg, NULL, 0);
+				*ignore_size = strtoul(colon, NULL, 0);
+			} else {
+				error_exit("Error: Invalid argument for '--ignore': \"%s\"\n", optarg);
+			}
+			break;
+		}
+		case 'h':
+			usage_exit(0);
+			break;
+		default:
+			usage_exit(1);
+		}
+	}
+}
+
 int main(int argc, char *argv[]) {
-	if (argc != 6) {
+	unsigned int ignore_addr = 0, ignore_size = 0;
+
+	parse_args(argc, argv, &ignore_addr, &ignore_size);
+
+	argc -= optind;
+	argv += optind;
+	if (argc != 5) {
 		usage_exit(1);
 	}

-	struct Symbol *symbols = parse_symbols(argv[1]);
+	struct Symbol *symbols = parse_symbols(argv[0]);

-	FILE *new_rom = xfopen(argv[2], 'r');
-	FILE *orig_rom = xfopen(argv[3], 'r');
-	struct Buffer *patches = process_template(argv[4], argv[5], new_rom, orig_rom, symbols);
+	FILE *new_rom = xfopen(argv[1], 'r');
+	FILE *orig_rom = xfopen(argv[2], 'r');
+	struct Buffer *patches = process_template(argv[3], argv[4], new_rom, orig_rom, symbols, ignore_addr, ignore_size);

 	if (!verify_completeness(orig_rom, new_rom, patches)) {
-		fprintf(stderr, PROGRAM_NAME ": Warning: Not all ROM differences are defined by \"%s\"\n", argv[5]);
+		fprintf(stderr, PROGRAM_NAME ": Warning: Not all ROM differences are defined by \"%s\"\n", argv[4]);
 	}

 	symbol_free(symbols);
--- a/vc/pokeyellow.constants.asm
+++ b/vc/pokeyellow.constants.asm
@ -1,49 +1,49 @@
 ; These are all the asm constants needed to make the yellow_vc patch.

 ; [FPA 001 Begin]
-EXPORT DEF M_CHAR EQU "M"
-EXPORT DEF E_CHAR EQU "E"
-EXPORT DEF G_CHAR EQU "G"
-EXPORT DEF A_CHAR EQU "A"
-EXPORT DEF P_CHAR EQU "P"
-EXPORT DEF X_CHAR EQU "X"
-EXPORT DEF L_CHAR EQU "L"
-EXPORT DEF S_CHAR EQU "S"
-EXPORT DEF F_CHAR EQU "F"
+EXPORT DEF M_CHAR EQU 'M'
+EXPORT DEF E_CHAR EQU 'E'
+EXPORT DEF G_CHAR EQU 'G'
+EXPORT DEF A_CHAR EQU 'A'
+EXPORT DEF P_CHAR EQU 'P'
+EXPORT DEF X_CHAR EQU 'X'
+EXPORT DEF L_CHAR EQU 'L'
+EXPORT DEF S_CHAR EQU 'S'
+EXPORT DEF F_CHAR EQU 'F'
 EXPORT MEGA_PUNCH

 ; [FPA 002 Begin]
-EXPORT DEF U_CHAR EQU "U"
-EXPORT DEF I_CHAR EQU "I"
+EXPORT DEF U_CHAR EQU 'U'
+EXPORT DEF I_CHAR EQU 'I'
 EXPORT GUILLOTINE

 ; [FPA 003 Begin]
-EXPORT DEF K_CHAR EQU "K"
+EXPORT DEF K_CHAR EQU 'K'
 EXPORT MEGA_KICK

 ; [FPA 004 Begin]
-EXPORT DEF B_CHAR EQU "B"
-EXPORT DEF Z_CHAR EQU "Z"
+EXPORT DEF B_CHAR EQU 'B'
+EXPORT DEF Z_CHAR EQU 'Z'
 EXPORT BLIZZARD

 ; [FPA 005 Begin]
 EXPORT BUBBLEBEAM

 ; [FPA 006 Begin]
-EXPORT DEF H_CHAR EQU "H"
-EXPORT DEF Y_CHAR EQU "Y"
+EXPORT DEF H_CHAR EQU 'H'
+EXPORT DEF Y_CHAR EQU 'Y'
 EXPORT HYPER_BEAM

 ; [FPA 007 Begin]
-EXPORT DEF T_CHAR EQU "T"
-EXPORT DEF N_CHAR EQU "N"
+EXPORT DEF T_CHAR EQU 'T'
+EXPORT DEF N_CHAR EQU 'N'
 EXPORT THUNDERBOLT

 ; [FPA 008 Begin]
 EXPORT HAZE

 ; [FPA 009 Begin]
-EXPORT DEF R_CHAR EQU "R"
+EXPORT DEF R_CHAR EQU 'R'
 EXPORT REFLECT

 ; [FPA 010 Begin]
 @ -1 +1 @@
 .9.3
 .0.0