Add DEMO variant

Makefile

@@ -5,17 +5,34 @@ COMPARE ?= 0
 CPP := $(CC) -E
 LD := $(DEVKITARM)/bin/arm-none-eabi-ld
 
-GAME_VERSION := THEMINISHCAP
+GAME_VERSION ?= USA
 REVISION := 0
 GAME_LANGUAGE := ENGLISH
 
 TITLE       := GBAZELDA MC
-GAME_CODE   := BZME
 MAKER_CODE  := 01
 
+ifeq ($(GAME_VERSION), USA)
+GAME_CODE   := BZME
+BUILD_NAME  := tmc
+else
+ifeq ($(GAME_VERSION), DEMO)
+GAME_CODE   := BZHE
+BUILD_NAME  := tmc
+else
+ifeq ($(GAME_VERSION), JP)
+GAME_CODE   := BZMJ
+BUILD_NAME  := tmc
+else
+$(error unknown version $(GAME_VERSION))
+endif
+endif
+endif
+
+
 SHELL := /bin/bash -o pipefail
 
-BUILD_NAME  := tmc
+
 ROM := $(BUILD_NAME).gba
 OBJ_DIR := build/$(BUILD_NAME)
 
@@ -120,11 +137,11 @@ MAKEFLAGS += --no-print-directory
 AUTO_GEN_TARGETS :=
 
 all: $(ROM)
-	@$(SHA1) tmc.sha1
+	@$(SHA1) $(BUILD_NAME).sha1
 
 # kept for backwards compat
 compare: $(ROM)
-	@$(SHA1) tmc.sha1
+	@$(SHA1) $(BUILD_NAME).sha1
 
 setup: $(TOOLDIRS)
 
@@ -205,3 +222,8 @@ $(ELF): $(OBJS) linker.ld
 
 $(ROM): $(ELF)
 	$(OBJCOPY) -O binary --gap-fill 0xFF --pad-to 0x9000000 $< $@
+
+usa: ; @$(MAKE) GAME_VERSION=USA
+demo: ; @$(MAKE) GAME_VERSION=DEMO
+jp: ; @$(MAKE) GAME_VERSION=JP
+eu: ; @$(MAKE) GAME_VERSION=EU

asm/bossDoor.s

@@ -591,7 +591,11 @@ sub_0808C650: @ 0x0808C650
 	movs r0, #0
 	b _0808C674
 	.align 2, 0
+.ifdef DEMO
+_0808C66C: .4byte gUnk_02036BB0
+.else
 _0808C66C: .4byte gUnk_02036BB8
+.endif
 _0808C670:
 	ldr r1, _0808C678 @ =gUnk_02036BB8
 	movs r0, #1
@@ -599,7 +603,11 @@ _0808C674:
 	str r0, [r1]
 	pop {r4, pc}
 	.align 2, 0
+.ifdef DEMO
+_0808C678: .4byte gUnk_02036BB0
+.else
 _0808C678: .4byte gUnk_02036BB8
+.endif
 
 	thumb_func_start sub_0808C67C
 sub_0808C67C: @ 0x0808C67C
@@ -607,7 +615,11 @@ sub_0808C67C: @ 0x0808C67C
 	ldr r0, [r0]
 	bx lr
 	.align 2, 0
+.ifdef DEMO
+_0808C684: .4byte gUnk_02036BB0
+.else
 _0808C684: .4byte gUnk_02036BB8
+.endif
 
 	thumb_func_start sub_0808C688
 sub_0808C688: @ 0x0808C688
@@ -618,4 +630,8 @@ sub_0808C688: @ 0x0808C688
 	str r0, [r1]
 	pop {pc}
 	.align 2, 0
+.ifdef DEMO
+_0808C698: .4byte gUnk_02036BB0
+.else
 _0808C698: .4byte gUnk_02036BB8
+.endif

asm/code_080043E8.s

@@ -2254,7 +2254,12 @@ gUnk_08007CAC:: @ 08007CAC
 	.incbin "baserom.gba", 0x007CAC, 0x000005B
 
 gUnk_08007D07:: @ 08007D07
+.ifdef DEMO
+@ TODO only one byte differs
+	.incbin "baserom_demo.gba", 0x007D07, 0x00000CF
+.else
 	.incbin "baserom.gba", 0x007D07, 0x00000CF
+.endif
 
 	non_word_aligned_thumb_func_start sub_08007DD6
 sub_08007DD6: @ 0x08007DD6

asm/code_080A3BD0.s

@@ -1206,6 +1206,10 @@ _080A45A2:
 
 	thumb_func_start sub_080A45A4
 sub_080A45A4: @ 0x080A45A4
+.ifdef DEMO
+	bx lr
+	.align 2, 0
+.else
 	push {lr}
 	bl FlushSprites
 	ldr r0, _080A45C4 @ =gUnk_02032EC0
@@ -1244,6 +1248,7 @@ _080A45E0:
 	.align 2, 0
 _080A4600: .4byte gUnk_0812814C
 _080A4604: .4byte gMenu
+.endif
 
 	thumb_func_start sub_080A4608
 sub_080A4608: @ 0x080A4608
@@ -2890,9 +2895,15 @@ _080A52DC: .4byte gInput
 _080A52E0:
 	cmp r4, #0x10
 	bne _080A52EC
+.ifdef DEMO
+	movs r0, #0x6d
+	bl SoundReq
+	b _080A5336
+.else
 	movs r0, #0xb
 	bl sub_080A4E84
 	b _080A530A
+.endif
 _080A52EC:
 	ldr r0, _080A5314 @ =gMenu
 	adds r0, #0x10

asm/code_080A5574.s

@@ -202,7 +202,11 @@ _080A570C:
 	cmp r0, #1
 	bne _080A575E
 	ldrb r3, [r2, #3]
+	.ifdef DEMO
+	movs r4, #0
+	.else
 	movs r1, #0
+	.endif
 	cmp r3, #2
 	beq _080A572E
 	cmp r3, #2
@@ -223,23 +227,48 @@ _080A572E:
 	ldrb r0, [r0]
 	cmp r0, #0
 	beq _080A574E
+	.ifdef DEMO
+	movs r4, #8
+	.else
 	movs r1, #8
+	.endif
 	cmp r3, #0
 	bne _080A574E
+	.ifdef DEMO
+	movs r4, #7
+	.else
 	movs r1, #7
+	.endif
 	b _080A5752
 	.align 2, 0
 _080A5744: .4byte gMenu
 _080A5748:
+.ifdef DEMO
+	movs r0, #0x6d
+	bl SoundReq
+	b _080A574E
+_080A574C:
+	movs r0, #0x6d
+	bl SoundReq
+.else
 	movs r1, #9
 	b _080A5752
 _080A574C:
 	movs r1, #0xa
+.endif
 _080A574E:
+	.ifdef DEMO
+	cmp r4, #0
+	.else
 	cmp r1, #0
+	.endif
 	beq _080A575E
 _080A5752:
+	.ifdef DEMO
+	adds r0, r4, #0
+	.else
 	adds r0, r1, #0
+	.endif
 	bl sub_080A4E84
 	movs r0, #0x6a
 	bl SoundReq

asm/fileScreen.s

@@ -5,6 +5,45 @@
 
 	.text
 
+.ifdef DEMO
+    thumb_func_start HandleGameplayScreen
+HandleGameplayScreen: @ 08051A28
+    push {r4, lr}
+    ldr r1, _08051A68 @ =0x030010A0
+    ldr r0, [r1, #0x00]
+    adds r0, #0x01
+    str r0, [r1, #0x00]
+    ldr r1, _08051A6C @ =0x080FC55C
+    ldr r4, _08051A70x @ =0x03001000
+    ldrb r0, [r4, #0x03]
+    lsls r0, r0, #0x02
+    adds r0, r0, r1
+    ldr r0, [r0, #0x00]
+    bl _call_via_r0
+    ldr r0, _08051A74x @ =0x02002A40
+    movs r2, #0x95
+    lsls r2, r2, #0x03
+    adds r1, r0, r2
+    ldr r0, [r1, #0x00]
+    cmp r0, #0x00
+    beq _08051A64
+    subs r0, #0x01
+    str r0, [r1, #0x00]
+    cmp r0, #0x00
+    bne _08051A64
+    movs r0, #0x07
+    movs r1, #0x02
+    bl DoFade
+    movs r0, #0x03
+    strb r0, [r4, #0x03]
+_08051A64:
+    pop {r4, pc}
+    .byte 0x00, 0x00
+_08051A68: .4byte 0x030010A0 @TODO ptr
+_08051A6C: .4byte 0x080FC55C @TODO ptr
+_08051A70x: .4byte 0x03001000 @TODO ptr
+_08051A74x: .4byte 0x02002A40 @TODO ptr
+.else
 	thumb_func_start HandleGameplayScreen
 HandleGameplayScreen: @ 0x08051988
 	push {lr}
@@ -24,6 +63,8 @@ HandleGameplayScreen: @ 0x08051988
 _080519A4: .4byte gScreenTransition
 _080519A8: .4byte gUnk_080FC9D8
 _080519AC: .4byte gMain
+.endif
+
 
 	thumb_func_start sub_080519B0
 sub_080519B0: @ 0x080519B0
@@ -382,6 +423,9 @@ _08051D28: .4byte gScreenTransition
 
 	thumb_func_start sub_08051D2C
 sub_08051D2C: @ 0x08051D2C
+.ifdef DEMO
+	.incbin "baserom_demo.gba", 0x051df4, 0x14 @nocheckin
+.else
 	push {lr}
 	movs r0, #7
 	movs r1, #8
@@ -390,6 +434,7 @@ sub_08051D2C: @ 0x08051D2C
 	bl InitScreen
 	pop {pc}
 	.align 2, 0
+.endif
 
 	thumb_func_start InitializeEntities
 InitializeEntities: @ 0x08051D40

asm/object3A.s

@@ -223,7 +223,11 @@ _0808C828:
 	bl sub_0801E49C
 	pop {r4, r5, r6, pc}
 	.align 2, 0
+.ifdef DEMO
+_0808C83C: .4byte gUnk_02036BB0
+.else
 _0808C83C: .4byte gUnk_02036BB8
+.endif
 
 	thumb_func_start sub_0808C840
 sub_0808C840: @ 0x0808C840

asm/playerItem/playerItem15.s

@@ -199,3 +199,27 @@ _080A31FC:
 _080A3200:
 	pop {r4, r5, pc}
 	.align 2, 0
+
+
+
+
+// DEMO only functions
+
+.ifdef DEMO
+// @nocheckin
+thumb_func_start HandleChooseDemoScreen
+HandleChooseDemoScreen: @ 0x080A2E18
+.incbin "baserom_demo.gba", 0x0a2e18, 0x28
+
+thumb_func_start sub_080A2E40
+sub_080A2E40: @ 0x080A2E40
+.incbin "baserom_demo.gba", 0x0a2e40, 0x14c
+
+thumb_func_start sub_080A2F8C
+sub_080A2F8C: @ 0x080A2F8C
+.incbin "baserom_demo.gba", 0x0A2F8C, 0x44
+
+thumb_func_start sub_080A2FD0
+sub_080A2FD0: @ 0x080A2FD0
+.incbin "baserom_demo.gba", 0x0A2FD0, 0x210
+.endif

asm/sub_0807CA18.s

@@ -4,7 +4,117 @@
 	.syntax unified
 
 	.text
-	
+
+.ifdef DEMO
+thumb_func_start sub_0807CA18
+sub_0807CA18:
+	push {r4, r5, r6, lr}
+	ldr r4, _0807CA38 @ =0x02002A40
+	ldrh r1, [r4, #0x00]
+	movs r0, #0x80
+	lsls r0, r0, #0x01
+	cmp r1, r0
+	beq _0807C9BA
+	movs r2, #0x00
+	strb r2, [r4, #0x00]
+	movs r3, #0x01
+	strb r3, [r4, #0x01]
+	strb r3, [r4, #0x08]
+	adds r1, r4, #0x0
+	adds r1, #0xAA
+	movs r0, #0x18
+	strb r0, [r1, #0x00]
+	adds r1, #0x01
+	strb r0, [r1, #0x00]
+	subs r1, #0x23
+	movs r0, #0x22
+	strb r0, [r1, #0x00]
+	adds r1, #0x01
+	movs r0, #0x15
+	strb r0, [r1, #0x00]
+	adds r0, r4, #0x0
+	adds r0, #0x8A
+	strb r2, [r0, #0x00]
+	adds r0, #0x01
+	strb r2, [r0, #0x00]
+	adds r0, #0x05
+	strb r3, [r0, #0x00]
+	adds r1, #0x03
+	movs r0, #0x90
+	strh r0, [r1, #0x00]
+	adds r1, #0x02
+	movs r0, #0x38
+	strh r0, [r1, #0x00]
+_0807C9BA:
+	adds r5, r4, #0x0
+	adds r5, #0x80
+	ldrb r0, [r5, #0x00]
+	cmp r0, #0x00
+	bne _0807C9CE
+	ldr r0, _0807CA3C @ =0x0811DFF4
+	adds r1, r5, #0x0
+	movs r2, #0x05
+	bl MemCopy
+_0807C9CE:
+	ldr r1, _0807CA40 @ =0x0811EF10
+	movs r6, #0x80
+	lsls r6, r6, #0x12
+	ldrb r0, [r6, #0x04]
+	lsls r0, r0, #0x02
+	adds r0, r0, r1
+	ldr r0, [r0, #0x00]
+	ldr r2, _0807CA44 @ =0x000004B4
+	adds r1, r4, #0x0
+	bl MemCopy
+	ldrb r0, [r6, #0x07]
+	adds r2, r0, #0x0
+	cmp r2, #0x00
+	bne _0807CA04
+	movs r0, #0x97
+	strb r0, [r5, #0x00]
+	adds r1, r4, #0x0
+	adds r1, #0x81
+	movs r0, #0x7F
+	strb r0, [r1, #0x00]
+	adds r1, #0x01
+	movs r0, #0xDD
+	strb r0, [r1, #0x00]
+	adds r0, r4, #0x0
+	adds r0, #0x83
+	strb r2, [r0, #0x00]
+_0807CA04:
+	movs r0, #0xA0
+	bl ModHealth
+	ldr r0, _0807CA48 @ =0xFFFFD8F1
+	bl ModRupees
+	ldr r0, _0807CA4C @ =0x02000010
+	ldrb r1, [r0, #0x07]
+	lsls r0, r1, #0x01
+	adds r0, r0, r1
+	ldr r1, _0807CA50 @ =0x0811DFF9
+	adds r0, r0, r1
+	movs r1, #0x95
+	lsls r1, r1, #0x03
+	adds r2, r4, r1
+	ldrb r1, [r6, #0x04]
+	adds r0, r0, r1
+	ldrb r1, [r0, #0x00]
+	lsls r0, r1, #0x03
+	subs r0, r0, r1
+	lsls r0, r0, #0x05
+	adds r0, r0, r1
+	lsls r0, r0, #0x04
+	str r0, [r2, #0x00]
+	movs r0, #0x01
+	pop {r4, r5, r6, pc}
+_0807CA38: .4byte 0x02002A40 @TODO ptr
+_0807CA3C: .4byte 0x0811DFF4 @TODO ptr
+_0807CA40: .4byte 0x0811EF10 @TODO ptr
+_0807CA44: .4byte 0x000004B4
+_0807CA48: .4byte 0xFFFFD8F1
+_0807CA4C: .4byte 0x02000010 @TODO ptr
+_0807CA50: .4byte 0x0811DFF9 @TODO ptr
+.else
 	thumb_func_start sub_0807CA18
 sub_0807CA18: @ 0x0807CA18
 	push {lr}
@@ -61,3 +171,4 @@ _0807CA78:
 	.align 2, 0
 _0807CA7C: .4byte gSave
 _0807CA80: .4byte gUnk_0811E470
+.endif

data/const/playerItem/playerItem15.s

@@ -7,6 +7,19 @@
 gUnk_08127270:: @ 08127270
 	.4byte sub_080A3084
 	.4byte sub_080A310C
-    
+
 gUnk_08127278:: @ 08127278
 	.incbin "baserom.gba", 0x127278, 0x0000008
+
+.ifdef DEMO
+@ TODO choose demo screen
+something:
+	.4byte sub_080A2E40
+	.4byte sub_080A2FD0
+	.4byte sub_080A2F8C
+
+something2::
+.incbin "baserom_demo.gba", 0x127c98, 0x38 @nocheckin
+.endif
+
+    

data/data_08132B30.s

@@ -2477,6 +2477,7 @@ gUnk_0813A7F0:: @ 0813A7F0
 	.4byte gUnk_08133FDC
 	.4byte gUnk_08133FDC
 	.4byte gUnk_08133FDC
+	.ifndef DEMO
 	.4byte gUnk_08139108
 	.4byte gUnk_081391D0
 	.4byte gUnk_081391FC
@@ -2485,6 +2486,7 @@ gUnk_0813A7F0:: @ 0813A7F0
 	.4byte gUnk_08133FDC
 	.4byte gUnk_08133FDC
 	.4byte gUnk_08133FDC
+	.endif
 	.4byte gUnk_081395D8
 	.4byte gUnk_08139714
 	.4byte gUnk_08138848

data/sprite_table.s

@@ -9,3 +9,8 @@ gUnk_089FB770:: @ 089FB770
 
 gUnk_089FB780:: @ 089FB780
 	.incbin "baserom.gba", 0x9FB780, 0x0000F44
+
+@ More sprites in demo
+.ifdef DEMO
+	.incbin "baserom_demo.gba", 0x9FD0F4, 0x984c
+.endif

include/structures.h

@@ -30,6 +30,8 @@ typedef struct {
     s32 signature;
     u8 field_0x4;
     u8 listenForKeyPresses;
+    u8 field_0x6;
+    u8 field_0x7;
 } struct_02000010;
 
 extern struct_02000010 gUnk_02000010;

linker.ld

@@ -152,10 +152,15 @@ SECTIONS {
         . = 0x00036A38; gCurrentWindow = .;
         . = 0x00036A40; gNewWindow = .;
         . = 0x00036A50; gEEPROMConfig = .;
+        . = 0x00036A50; gUnk_02036A50 = .; /* DEMO is 8 bytes earlier due to missing eeprom*/
         . = 0x00036A58; gUnk_02036A58 = .;
-        . = 0x00036AD8; gUnk_02036AD8 = .;
+        . = 0x00036AD0; gUnk_02036AD0 = .; /* DEMO is 8 bytes earlier due to missing eeprom*/
+        . = 0x00036AD8; gUnk_02036AD8 = .; 
+        . = 0x00036BB0; gUnk_02036BB0 = .; /* DEMO is 8 bytes earlier due to missing eeprom*/
         . = 0x00036BB8; gUnk_02036BB8 = .;
+        . = 0x00036BB8; gMPlayTracksDEMO = .; /* DEMO is 8 bytes earlier due to missing eeprom*/
         . = 0x00036BC0; gMPlayTracks = .;
+        . = 0x00038558; gUnk_02038558 = .; /* DEMO is 8 bytes earlier due to missing eeprom*/
         . = 0x00038560; gUnk_02038560 = .;
         . = 0x00040000;
     } >ewram

src/audio.c

@@ -742,7 +742,11 @@ extern const SongHeader sfx21F;
 extern const SongHeader sfx220;
 extern const SongHeader sfx221;
 
+#ifdef DEMO
+extern MusicPlayerTrack gMPlayTracksDEMO[];
+#else
 extern MusicPlayerTrack gMPlayTracks[];
+#endif
 
 extern MusicPlayerInfo gMPlayInfos[0x1C];
 extern u8 gMPlayMemAccArea[0x10];
@@ -783,6 +787,43 @@ typedef enum {
     MUSIC_PLAYER_BGM,
 } MusicPlayerE;
 
+
+#ifdef DEMO
+const MusicPlayer gMusicPlayers[] = {
+    [MUSIC_PLAYER_00] = { &gMPlayInfos[0x08], &gMPlayTracksDEMO[0x00], 2, 1 },
+    [MUSIC_PLAYER_PLY_VO] = { &gMPlayInfos[0x12], &gMPlayTracksDEMO[0x02], 1, 1 },
+    [MUSIC_PLAYER_02] = { &gMPlayInfos[0x13], &gMPlayTracksDEMO[0x03], 1, 1 },
+    [MUSIC_PLAYER_03] = { &gMPlayInfos2[0x2], &gMPlayTracksDEMO[0x04], 2, 1 },
+    [MUSIC_PLAYER_04] = { &gMPlayInfos[0x1B], &gMPlayTracksDEMO[0x06], 2, 1 },
+    [MUSIC_PLAYER_05] = { &gMPlayInfos[0x03], &gMPlayTracksDEMO[0x08], 2, 1 },
+    [MUSIC_PLAYER_06] = { &gMPlayInfos[0x07], &gMPlayTracksDEMO[0x0A], 2, 1 },
+    [MUSIC_PLAYER_07] = { &gMPlayInfos[0x11], &gMPlayTracksDEMO[0x0C], 2, 1 },
+    [MUSIC_PLAYER_08] = { &gMPlayInfos2[0x1], &gMPlayTracksDEMO[0x0E], 2, 1 },
+    [MUSIC_PLAYER_09] = { &gMPlayInfos[0x06], &gMPlayTracksDEMO[0x10], 2, 1 },
+    [MUSIC_PLAYER_0A] = { &gMPlayInfos[0x14], &gMPlayTracksDEMO[0x12], 2, 1 },
+    [MUSIC_PLAYER_0B] = { &gMPlayInfos2[0x3], &gMPlayTracksDEMO[0x14], 2, 1 },
+    [MUSIC_PLAYER_0C] = { &gMPlayInfos[0x19], &gMPlayTracksDEMO[0x16], 2, 1 },
+    [MUSIC_PLAYER_0D] = { &gMPlayInfos[0x02], &gMPlayTracksDEMO[0x18], 2, 1 },
+    [MUSIC_PLAYER_0E] = { &gMPlayInfos[0x0E], &gMPlayTracksDEMO[0x1A], 2, 1 },
+    [MUSIC_PLAYER_0F] = { &gMPlayInfos[0x18], &gMPlayTracksDEMO[0x1C], 2, 1 },
+    [MUSIC_PLAYER_10] = { &gMPlayInfos[0x05], &gMPlayTracksDEMO[0x1E], 2, 1 },
+    [MUSIC_PLAYER_11] = { &gMPlayInfos[0x1A], &gMPlayTracksDEMO[0x20], 2, 1 },
+    [MUSIC_PLAYER_12] = { &gMPlayInfos[0x0D], &gMPlayTracksDEMO[0x22], 2, 1 },
+    [MUSIC_PLAYER_13] = { &gMPlayInfos[0x00], &gMPlayTracksDEMO[0x24], 2, 1 },
+    [MUSIC_PLAYER_14] = { &gMPlayInfos[0x0A], &gMPlayTracksDEMO[0x26], 2, 1 },
+    [MUSIC_PLAYER_15] = { &gMPlayInfos[0x0C], &gMPlayTracksDEMO[0x28], 2, 1 },
+    [MUSIC_PLAYER_16] = { &gMPlayInfos[0x17], &gMPlayTracksDEMO[0x2A], 2, 1 },
+    [MUSIC_PLAYER_17] = { &gMPlayInfos[0x01], &gMPlayTracksDEMO[0x2C], 2, 1 },
+    [MUSIC_PLAYER_18] = { &gMPlayInfos[0x0B], &gMPlayTracksDEMO[0x2E], 2, 1 },
+    [MUSIC_PLAYER_19] = { &gMPlayInfos[0x15], &gMPlayTracksDEMO[0x30], 2, 1 },
+    [MUSIC_PLAYER_1A] = { &gMPlayInfos[0x09], &gMPlayTracksDEMO[0x32], 2, 1 },
+    [MUSIC_PLAYER_1B] = { &gMPlayInfos2[0x0], &gMPlayTracksDEMO[0x34], 2, 1 },
+    [MUSIC_PLAYER_1C] = { &gMPlayInfos[0x0F], &gMPlayTracksDEMO[0x36], 2, 1 },
+    [MUSIC_PLAYER_1D] = { &gMPlayInfos[0x16], &gMPlayTracksDEMO[0x38], 2, 1 },
+    [MUSIC_PLAYER_1E] = { &gMPlayInfos[0x04], &gMPlayTracksDEMO[0x3A], 0xc, 0 },
+    [MUSIC_PLAYER_BGM] = { &gMPlayInfos[0x10], &gMPlayTracksDEMO[0x46], 0xc, 0 },
+};
+#else
 const MusicPlayer gMusicPlayers[] = {
     [MUSIC_PLAYER_00] = { &gMPlayInfos[0x08], &gMPlayTracks[0x00], 2, 1 },
     [MUSIC_PLAYER_PLY_VO] = { &gMPlayInfos[0x12], &gMPlayTracks[0x02], 1, 1 },
@@ -817,6 +858,7 @@ const MusicPlayer gMusicPlayers[] = {
     [MUSIC_PLAYER_1E] = { &gMPlayInfos[0x04], &gMPlayTracks[0x3A], 0xc, 0 },
     [MUSIC_PLAYER_BGM] = { &gMPlayInfos[0x10], &gMPlayTracks[0x46], 0xc, 0 },
 };
+#endif
 
 const Song gSongTable[] = {
     [SFX_NONE] = { &sfxNone, MUSIC_PLAYER_BGM, MUSIC_PLAYER_BGM },

src/code_0805436C.c

@@ -265,5 +265,7 @@ u32 CreateItemDrop(Entity* arg0, u32 itemID, u32 itemParameter) {
 */
 
 void sub_08054870(void) {
+    #ifndef DEMO
     gUnk_080FE2A0[gMenu.menuType]();
+    #endif
 }

src/code_0805F9A0.c

@@ -4,9 +4,14 @@
 #include "functions.h"
 
 extern u16 gUnk_081092D4;
-extern u8 gUnk_02036AD8;
 extern u8 gUnk_081094CE;
+#ifdef DEMO
+extern u8 gUnk_02036AD0;
+extern u8 gUnk_02036A50;
+#else
+extern u8 gUnk_02036AD8;
 extern u8 gUnk_02036A58;
+#endif
 extern void* gUnk_081092AC[];
 
 typedef struct {
@@ -59,7 +64,11 @@ void sub_0805F820(WStruct* r0, u32* r1) {
     VStruct* temp3;
 
     if (r0->unk4 - r0->unk6 > 0) {
+        #ifdef DEMO
+        sub_08002724(r1, &gUnk_02036A50);
+        #else
         sub_08002724(r1, &gUnk_02036A58);
+        #endif
         if (r0->unk1 == 0) {
             u32 tmp = sub_0805F7A0(*r1);
             uVar6 = tmp & 0xf;
@@ -77,7 +86,11 @@ void sub_0805F820(WStruct* r0, u32* r1) {
             uVar3 = uVar4;
         }
 
+        #ifdef DEMO
+        puVar8 = &gUnk_02036A50 + uVar6;
+        #else
         puVar8 = &gUnk_02036A58 + uVar6;
+        #endif
         temp2 = r0->unk8;
         temp = gUnk_0810942E[r0->unk3].filler0[r0->unk2 * 2];
         uVar7 = r0->unk6;
@@ -120,23 +133,40 @@ void sub_0805F918(u32 idx, u32 idx2, void* dest) {
     u8* temp;
     u8* temp2;
 
+    #ifdef DEMO
+    MemFill32(sub_0805F8F8(idx2), &gUnk_02036AD0, 0xe0);
+    #else
     MemFill32(sub_0805F8F8(idx2), &gUnk_02036AD8, 0xe0);
+    #endif
     puVar1 = gUnk_081092AC[idx];
 
     temp = &gUnk_081094CE + idx2 * 0xc0;
     idx3 = 0;
     for (i = 0; i < 3; i++) {
+        #ifdef DEMO
+        puVar2 = &gUnk_02036A50;
+        sub_08002724(puVar1, &gUnk_02036A50);
+        #else
         puVar2 = &gUnk_02036A58;
         sub_08002724(puVar1, &gUnk_02036A58);
+        #endif
         puVar1 += 0x40;
 
         for (j = 0; j < 8; j++) {
+            #ifdef DEMO
+            sub_080026C4(puVar2, &gUnk_02036AD0, temp, idx3);
+            #else
             sub_080026C4(puVar2, &gUnk_02036AD8, temp, idx3);
+            #endif
             puVar2++;
             idx3++;
         }
     }
+    #ifdef DEMO
+    LoadResourceAsync((const void*)&gUnk_02036AD0, (u32)dest, 0xe0);
+    #else
     LoadResourceAsync((const void*)&gUnk_02036AD8, (u32)dest, 0xe0);
+    #endif
 }
 
 u32 sub_0805F9A0(u32 r0) {

src/eeprom.c

@@ -1,6 +1,10 @@
 #include "global.h"
 #include "gba/eeprom.h"
 
+#ifdef DEMO
+const u8 unk[] = {0xff, 0xff, 0xff, 0xff};
+const u8 padding[0x18] = {};
+#else
 typedef struct EEPROMConfig {
     u32 unk_00;
     u16 size;
@@ -9,6 +13,7 @@ typedef struct EEPROMConfig {
     // u8 filler[3];
 } EEPROMConfig;
 
+
 const char EEPROM_V124[] = "EEPROM_V124";
 extern const EEPROMConfig* gEEPROMConfig;
 const EEPROMConfig gEEPROMConfig512 = { 0x200, 0x40, 0x300, 0x6 };
@@ -16,6 +21,8 @@ const EEPROMConfig gEEPROMConfig8k = { 0x2000, 0x400, 0x300, 0xe };
 
 u16 EEPROMWrite(u16, const u16*, u8);
 
+
+
 u16 EEPROMConfigure(u16 unk_1) {
     u16 ret;
 
@@ -248,3 +255,5 @@ u16 EEPROMWrite0_8k_Check(u16 address, const u16* data) {
 }
 
 const char thing[0x1c] = "\xff\xff\xff\xff";
+
+#endif

src/game.c

@@ -61,10 +61,15 @@ void sub_0805212C(void) {
             gMenu.transitionTimer--;
             if (gMenu.transitionTimer == 0) {
                 sub_080520C4(2);
+                #ifdef DEMO
+                SoundReq(0x80080000);
+                DoFade(7,4);
+                #else
                 sub_08052418(0, 0);
                 gScreen.lcd.displayControl |= 0x600;
                 gFadeControl.field_0x4 = 0xffff;
                 DoFade(4, 0x10);
+                #endif
             }
         }
     } else {
@@ -72,6 +77,13 @@ void sub_0805212C(void) {
     }
 }
 
+#ifdef DEMO
+void sub_080521A0(void) {
+  if (gFadeControl.active == 0) {
+    DoSoftReset();
+  }
+}
+#else
 void sub_080521A0(void) {
     s32 temp3;
     u32 temp2;
@@ -147,6 +159,7 @@ void sub_080521A0(void) {
             break;
     }
 }
+#endif
 
 void sub_080522F4(void) {
     switch (gMenu.menuType) {

src/intro.c

@@ -104,6 +104,24 @@ static void HandleNintendoCapcomLogos(void) {
         gScreen.bg.bg1Updated = 1;
         DoFade(6, 8);
         advance = ADVANCE_NONE;
+        #ifdef DEMO
+        if (gUnk_02000010.listenForKeyPresses == 0) {
+        if ((gInput.heldKeys & 0x204) == 0x204) { // TODO
+            gUnk_02000010.field_0x7 = 1;
+            SoundReq(0x73);
+        }
+        else {
+            if ((gInput.heldKeys & 0x104) == 0x104) { // TODO
+            gUnk_02000010.field_0x7 = 2;
+            SoundReq(0xcd);
+            }
+            else {
+            gUnk_02000010.field_0x7 = 0;
+            }
+        }
+        }
+        #endif
+
     } else {
         if (advance == ADVANCE_TIMER_EXPIRED) {
             advance = ADVANCE_KEY_PRESSED;

src/main.c

@@ -12,13 +12,20 @@
 
 extern void HandleIntroScreen(void);
 extern void HandleChooseFileScreen(void);
+extern void HandleChooseDemoScreen(void);
 extern void HandleGameplayScreen(void);
 extern void HandleGameOverScreen(void);
 extern void HandleCreditsScreen(void);
 extern void HandleDebugTextScreen(void);
 
 static void (*const sScreenHandlers[])(void) = {
-    [SCREEN_INTRO] = HandleIntroScreen,       [SCREEN_CHOOSE_FILE] = HandleChooseFileScreen,
+    [SCREEN_INTRO] = HandleIntroScreen,      
+    #ifdef DEMO
+     [SCREEN_CHOOSE_FILE] = HandleChooseDemoScreen,
+    #else
+    [SCREEN_CHOOSE_FILE] = HandleChooseFileScreen,
+    #endif
+
     [SCREEN_GAMEPLAY] = HandleGameplayScreen, [SCREEN_GAME_OVER] = HandleGameOverScreen,
     [SCREEN_CREDITS] = HandleCreditsScreen,   [SCREEN_DEBUG_TEXT] = HandleDebugTextScreen,
 };
@@ -83,7 +90,11 @@ void AgbMain(void) {
 // Interrupt handlers that are loaded into RAM.
 extern u8 sub_080B197C[];
 extern u8 gUnk_030056F0[];
+#ifdef DEMO
+extern u8 gUnk_02038558[];
+#else
 extern u8 gUnk_02038560[];
+#endif
 extern u8 gUnk_080B2CD8[];
 extern u8 gUnk_080B2CD8_2[];
 extern u8 gUnk_080B2CD8_3[];
@@ -105,7 +116,11 @@ static void sub_08055F70(void) {
 
     size = (u32)gUnk_080B2CD8_2 - (u32)gUnk_080B2CD8_3;
     if (size != 0) {
+        #ifdef DEMO
+        MemCopy(gUnk_080B2CD8_3, gUnk_02038558, size);
+        #else
         MemCopy(gUnk_080B2CD8_3, gUnk_02038560, size);
+        #endif
     }
 
     DispReset(0);

src/room.c

@@ -2161,8 +2161,18 @@ u32 sub_0804CD0C() {
     return 1;
 }
 
+#ifdef DEMO
+void nullsub_251() {
+    if (gUnk_02000000->saveFileId != 0 && GetInventoryValue(0x40) == 0) {
+        SetTileType(0x365,0x349,1);
+        SetTileType(0x365,0x34a,1);
+        SetTileType(0x365,0x34b,1);
+    }
+}
+#else
 void nullsub_251() {
 }
+#endif
 
 u32 sub_0804CD14() {
     return 1;
@@ -2288,8 +2298,18 @@ u32 sub_0804CE38() {
     return 1;
 }
 
+#ifdef DEMO
+void nullsub_262() {
+    if (GetInventoryValue(0x41) == 0) {
+        SetTileType(0x365,0x287,2);
+        SetTileType(0x365,0x288,2);
+        SetTileType(0x365,0x289,2);
+    }
+}
+#else
 void nullsub_262() {
 }
+#endif
 
 u32 sub_0804CE40() {
     return 1;
@@ -5049,6 +5069,10 @@ void sub_0804EC00(void) {
     if ((s32)gSave.windcrests > -1) {
         LoadRoomEntityList(&gUnk_080F4E10);
     }
+    #ifdef DEMO
+    SetTileType(0x177,0x5b4,1);
+    SetTileType(0x177,0x5f4,1);
+    #endif
 }
 
 void sub_0804EC98(void) {

src/save.c

@@ -41,10 +41,20 @@ u32 DataCompare(u32 address, const void* data, u32 size);
 const u16 gUnk_0811E454[] = { 0x0,   0x0,   0x100, 0x200, 0x300, 0x400, 0x500,
                               0x5C0, 0x680, 0x740, 0x800, 0x8C0, 0x9C0, 0xA80 };
 
-const char gUnk_0811E470[6] = "LINK";
+const char gUnk_0811E470[4] = "LINK";
+
+#ifdef DEMO
+const u8 unknown[] = { 0x0, 0x0f, 0x0a, 0x0a, 0x0f, 0x0f, 0x0f, 0x08, 0x05, 0x05, 0x00, 0x00 };
+#else
+const u8 padding[2] = {0,0};
+#endif
 
 static SaveResult (*const sSaveHandlers[])(u32) = { HandleSaveInit, HandleSaveInProgress, HandleSaveDone };
 
+
+#ifdef DEMO
+asm(".incbin \"baserom_demo.gba\", 0x11e010, 0xf0c"); // @nocheckin
+#else
 static const char sSignatureLong[32] = "AGBZELDA:THE MINISH CAP:ZELDA 5";
 
 // Save file is untouched
@@ -60,7 +70,7 @@ const SaveFileEEPROMAddresses gSaveFileEEPROMAddresses[] = { { 0x500, 0x30, 0x10
                                                              { 0x20, 0, 0, 0, 0x1000 },
                                                              { 0x20, 0x60, 0x1060, 0xf80, 0x1f80 },
                                                              { 0x8, 0xfa0, 0x1fa0, 0xfa0, 0x1fa0 } };
-
+#endif
 void sub_0807CD9C() {
     sub_080530C8();
 }
@@ -122,7 +132,12 @@ SaveResult HandleSaveDone(u32 arg0) {
     return result;
 }
 
+
 u32 InitSaveData(void) {
+#ifdef DEMO
+  CpuSet(NULL,&gSave,0x4b4);
+  return 1;
+#else
     const SaveFileEEPROMAddresses* eepromAddresses;
     u32 error;
 
@@ -147,40 +162,71 @@ u32 InitSaveData(void) {
         DataWrite(eepromAddresses->address1, sSignatureLong, eepromAddresses->size);
     }
     return 1;
+#endif
 }
 
 u32 WriteSaveFile(u32 index, SaveFile* saveFile) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleWriteWithStatus(index, saveFile);
+    #endif
 }
 
 u32 Write_02000000(struct_02000000* arg0) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleWriteWithStatus(3, arg0);
+    #endif
 }
 
 u32 sub_0807CF1C(u8* arg0) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleWriteWithStatus(5, arg0);
+    #endif
 }
 
 s32 ReadSaveFile(u32 index, SaveFile* saveFile) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleReadWithStatus(index, saveFile);
+    #endif
 }
 
 u32 Read_02000000(struct_02000000* arg0) {
+    #ifdef DEMO
+    return 0;
+    #else
     return DataDoubleReadWithStatus(3, arg0);
+    #endif
 }
 
 u32 sub_0807CF3C(u8* arg0) {
+    #ifdef DEMO
+    return 0;
+    #else
     return DataDoubleReadWithStatus(5, arg0);
+    #endif
 }
 
+
+
 void SetFileStatusDeleted(u32 index) {
+    #ifndef DEMO
     const SaveFileEEPROMAddresses* eepromAddresses;
 
     eepromAddresses = GetSaveFileEEPROMAddresses(index);
     WriteSaveFileStatus(eepromAddresses->checksum2, &sSaveDescDeleted);
     WriteSaveFileStatus(eepromAddresses->checksum1, &sSaveDescDeleted);
+    #endif
 }
 
+
+#ifndef DEMO
 void SetFileStatusInit(u32 index) {
     const SaveFileEEPROMAddresses* eepromAddresses;
     const SaveFileStatus* fileStatus;
@@ -406,3 +452,4 @@ bool32 DataCompare(u32 address, const void* data, u32 size) {
     }
     return TRUE;
 }
+#endif

src/sub_080A3B84.c

@@ -7,6 +7,7 @@
 extern void (*const gUnk_081280C4[])();
 
 void DrawKinstoneMenu(void) {
+    #ifndef DEMO
     gScreenTransition.field_0x24[8] = 2;
     FlushSprites();
     gUnk_081280C4[gMenu.menuType]();
@@ -18,6 +19,7 @@ void DrawKinstoneMenu(void) {
     sub_080AD9B0();
     sub_080AD918();
     gScreenTransition.field_0x24[8] = 0;
+    #endif
 }
 
 extern void gUnk_081280DC;

tmc_demo.sha1

@@ -0,0 +1 @@
+63fcad218f9047b6a9edbb68c98bd0dec322d7a1  tmc_demo.gba

tmc_eu.sha1

@@ -0,0 +1 @@
+cff199b36ff173fb6faf152653d1bccf87c26fb7  tmc_eu.gba

tmc_jp.sha1

@@ -0,0 +1 @@
+6c5404a1effb17f481f352181d0f1c61a2765c5d  tmc_jp.gba