Document game_init.c

51 files changed, 258 insertions, 229 deletions

diff --git a/arm9/asm/unk_0200BB14.s b/arm9/asm/unk_0200BB14.s
index b8a6eab5..840d91d1 100644
--- a/arm9/asm/unk_0200BB14.s
+++ b/arm9/asm/unk_0200BB14.s
@@ -342,7 +342,7 @@ _0200BD68:
 	str r0, [sp, #0x18]
 	ldr r0, [r5, #0x0]
 	ldr r1, [r6, #0x0]
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	ldr r1, [sp, #0x18]
 	ldr r2, [r5, #0x0]
 	str r0, [sp, #0x1c]
@@ -408,7 +408,7 @@ _0200BDF6:
 	ldr r1, [sp, #0x10]
 	ldr r0, [r5, #0x0]
 	ldr r1, [r1, #0x18]
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	ldr r1, [r4, #0x14]
 	add r6, r0, #0x0
 	str r1, [sp, #0x0]
diff --git a/arm9/asm/unk_0201B1A8.s b/arm9/asm/unk_0201B1A8.s
index 359f9bfe..115edca0 100644
--- a/arm9/asm/unk_0201B1A8.s
+++ b/arm9/asm/unk_0201B1A8.s
@@ -21,7 +21,7 @@ FUN_0201B1A8: ; 0x0201B1A8
 	push {r3-r5, lr}
 	add r5, r3, #0x0
 	add r4, r2, #0x0
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	str r0, [r5, #0x0]
 	bl NNS_G3dGetTex
 	cmp r0, #0x0
diff --git a/arm9/asm/unk_0201F06C.s b/arm9/asm/unk_0201F06C.s
index 03e1404e..d33edce3 100644
--- a/arm9/asm/unk_0201F06C.s
+++ b/arm9/asm/unk_0201F06C.s
@@ -1821,7 +1821,7 @@ _0201FD0C:
 	str r0, [r4, r1]
 	ldr r0, [r5, #0x8]
 	ldr r1, _0201FD54 ; =UNK_02105BBC
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	mov r1, #0x46
 	lsl r1, r1, #0x2
 	str r0, [r4, r1]
diff --git a/arm9/asm/unk_02020C44.s b/arm9/asm/unk_02020C44.s
index 235543ee..4550b5cb 100644
--- a/arm9/asm/unk_02020C44.s
+++ b/arm9/asm/unk_02020C44.s
@@ -146,7 +146,7 @@ _02020D38:
 _02020D48:
 	ldr r0, [sp, #0x0]
 	add r1, r6, #0x0
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	str r0, [r4, #0x4]
 	cmp r0, #0x0
 	bne _02020D5A
diff --git a/arm9/asm/unk_02033B68.s b/arm9/asm/unk_02033B68.s
index 9e204377..57ae58f9 100644
--- a/arm9/asm/unk_02033B68.s
+++ b/arm9/asm/unk_02033B68.s
@@ -326,7 +326,7 @@ FUN_02033D3C: ; 0x02033D3C
 	beq _02033D92
 	ldr r0, _02033D98 ; =UNK_02105D88
 	add r1, sp, #0x4
-	bl FUN_020161F8
+	bl OpenAndReadWholeFile
 	mov r1, #0x96
 	ldr r0, [sp, #0x4]
 	lsl r1, r1, #0x2
@@ -374,11 +374,11 @@ FUN_02033D9C: ; 0x02033D9C
 	add r1, sp, #0x4
 	beq _02033DC2
 	ldr r0, _02033E5C ; =UNK_02105D98
-	bl FUN_020161F8
+	bl OpenAndReadWholeFile
 	b _02033DC8
 _02033DC2:
 	ldr r0, _02033E60 ; =UNK_02105DA8
-	bl FUN_020161F8
+	bl OpenAndReadWholeFile
 _02033DC8:
 	mov r1, #0x96
 	ldr r0, [sp, #0x4]
diff --git a/arm9/asm/unk_02033F50.s b/arm9/asm/unk_02033F50.s
index ed33e084..eb65ebfd 100644
--- a/arm9/asm/unk_02033F50.s
+++ b/arm9/asm/unk_02033F50.s
@@ -110,7 +110,7 @@ _02033FA4:
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, _02034160 ; =gMain + 0x60
 	mov r1, #0x0
 	strb r1, [r0, #0x5]
diff --git a/arm9/asm/unk_02034188.s b/arm9/asm/unk_02034188.s
index 08265835..a91f1c2c 100644
--- a/arm9/asm/unk_02034188.s
+++ b/arm9/asm/unk_02034188.s
@@ -58,7 +58,7 @@ FUN_02034188: ; 0x02034188
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, _02034370 ; =gMain + 0x60
 	mov r1, #0x0
 	strb r1, [r0, #0x5]
diff --git a/arm9/asm/unk_02053750.s b/arm9/asm/unk_02053750.s
index 38f594ef..cf28dafb 100644
--- a/arm9/asm/unk_02053750.s
+++ b/arm9/asm/unk_02053750.s
@@ -974,7 +974,7 @@ _02053E24:
 	bl FUN_02009DAC
 	ldr r1, _02053E88 ; =UNK_02105F80
 	mov r0, #0x4
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	ldr r1, [r5, #0x10]
 	add r4, r0, #0x0
 	str r1, [sp, #0x0]
@@ -1012,7 +1012,7 @@ FUN_02053E8C: ; 0x02053E8C
 	add r4, r0, #0x0
 	mov r0, #0x4
 	add r1, r6, #0x0
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	add r6, r0, #0x0
 	add r1, r4, #0x0
 	mov r2, #0x4
diff --git a/arm9/asm/unk_0206F3FC.s b/arm9/asm/unk_0206F3FC.s
index 17adb2d2..53557016 100644
--- a/arm9/asm/unk_0206F3FC.s
+++ b/arm9/asm/unk_0206F3FC.s
@@ -143,7 +143,7 @@ FUN_0206F3FC: ; 0x0206F3FC
 	strh r1, [r3, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r2, #0x2
 	mov r0, #0x3
 	mov r1, #0xc
diff --git a/arm9/asm/unk_020772F0.s b/arm9/asm/unk_020772F0.s
index 87e9cab0..5a4129b1 100644
--- a/arm9/asm/unk_020772F0.s
+++ b/arm9/asm/unk_020772F0.s
@@ -777,7 +777,7 @@ _020772FE:
 	str r0, [r4, r1]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl FUN_02077B24
 	mov r0, #0x16
 	lsl r0, r0, #0x4
diff --git a/arm9/asm/unk_02079C70.s b/arm9/asm/unk_02079C70.s
index 3134a96c..87da24ba 100644
--- a/arm9/asm/unk_02079C70.s
+++ b/arm9/asm/unk_02079C70.s
@@ -87,7 +87,7 @@ FUN_02079C7C: ; 0x02079C7C
 	strh r2, [r0, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r2, #0x1
 	mov r0, #0x3
 	mov r1, #0x13
diff --git a/arm9/asm/unk_02089498.s b/arm9/asm/unk_02089498.s
index 3facd182..8e706149 100644
--- a/arm9/asm/unk_02089498.s
+++ b/arm9/asm/unk_02089498.s
@@ -119,7 +119,7 @@ _020894FC:
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0x0
 	bl FUN_0208961C
 	add r0, r4, #0x0
diff --git a/arm9/asm/unk_02089960.s b/arm9/asm/unk_02089960.s
index 9c06a4ab..bd234548 100644
--- a/arm9/asm/unk_02089960.s
+++ b/arm9/asm/unk_02089960.s
@@ -101,7 +101,7 @@ _020899B8:
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r6, #0x0
 	bl FUN_02089A6C
 	add r0, r6, #0x0
diff --git a/arm9/asm/unk_02089D90.s b/arm9/asm/unk_02089D90.s
index e7b88272..1fd86f68 100644
--- a/arm9/asm/unk_02089D90.s
+++ b/arm9/asm/unk_02089D90.s
@@ -57,7 +57,7 @@ FUN_02089D90: ; 0x02089D90
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, _02089EFC ; =gMain + 0x60
 	mov r1, #0x0
 	strb r1, [r0, #0x5]
diff --git a/arm9/asm/unk_02089F24.s b/arm9/asm/unk_02089F24.s
index b5c93a8a..14ed66e2 100644
--- a/arm9/asm/unk_02089F24.s
+++ b/arm9/asm/unk_02089F24.s
@@ -61,7 +61,7 @@ FUN_02089F24: ; 0x02089F24
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, _0208A090 ; =gMain + 0x60
 	mov r1, #0x0
 	strb r1, [r0, #0x5]
@@ -230,7 +230,7 @@ _0208A0C8:
 	str r0, [r2, #0x0]
 	mov r0, #0x4
 	mov r1, #0x8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, _0208A230 ; =gMain + 0x60
 	mov r1, #0x0
 	strb r1, [r0, #0x5]
diff --git a/arm9/global.inc b/arm9/global.inc
index 19284cbe..288dcf4e 100644
--- a/arm9/global.inc
+++ b/arm9/global.inc
@@ -1010,18 +1010,18 @@
 .extern Main_SetVBlankIntrCB
 .extern FUN_02015F1C
 .extern FUN_02015F34
-.extern FUN_020161A4
-.extern FUN_020161F8
-.extern FUN_020162FC
-.extern FUN_02016324
-.extern FUN_020163BC
+.extern AllocAndReadFile
+.extern OpenAndReadWholeFile
+.extern ClearFileCache
+.extern OpenFileCached
+.extern InitKeypadAndTouchpad
 .extern FUN_02016438
 .extern FUN_02016444
 .extern FUN_02016454
-.extern FUN_02016464
-.extern FUN_0201669C
-.extern FUN_020166A8
-.extern FUN_020166B8
+.extern ReadKeypadAndTocuhpad
+.extern SetKeyRepeatTimers
+.extern SetSoftResetDisableMask
+.extern ClearSoftResetDisableMask
 .extern FUN_020166C8
 .extern FUN_0201681C
 .extern FUN_02016828
diff --git a/arm9/lib/include/tp.h b/arm9/lib/include/tp.h
index d2687545..dc762f10 100644
--- a/arm9/lib/include/tp.h
+++ b/arm9/lib/include/tp.h
@@ -1,6 +1,14 @@
 #ifndef NITRO_TP_H_
 #define NITRO_TP_H_
 
+#define     TP_TOUCH_OFF                0       // Not being touched
+#define     TP_TOUCH_ON                 1       // Being touched
+
+#define     TP_VALIDITY_VALID           0       // Valid
+#define     TP_VALIDITY_INVALID_X       1       // Data with invalid X coordinate
+#define     TP_VALIDITY_INVALID_Y       2       // Data with invalid Y coordinate
+#define     TP_VALIDITY_INVALID_XY      (TP_VALIDITY_INVALID_X | TP_VALIDITY_INVALID_Y) // Data with invalid X and Y coordinates
+
 // Touch panel input structure
 typedef struct
 {
diff --git a/arm9/modules/05/asm/mod05_021D9320.s b/arm9/modules/05/asm/mod05_021D9320.s
index ec304548..419b92fd 100644
--- a/arm9/modules/05/asm/mod05_021D9320.s
+++ b/arm9/modules/05/asm/mod05_021D9320.s
@@ -53,7 +53,7 @@ _021D9374:
 	str r0, [sp, #0x20]
 	ldr r1, [r6]
 	add r0, r4, #0
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	ldr r1, [sp, #0x20]
 	str r0, [sp, #0x24]
 	add r2, r4, #0
@@ -161,7 +161,7 @@ _021D944A:
 	ldr r1, [sp, #0x10]
 	add r0, r4, #0
 	ldr r1, [r1, #0x18]
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	mov r3, #0x4e
 	lsl r3, r3, #2
 	ldr r1, [r5, r3]
diff --git a/arm9/modules/05/asm/mod05_021DB44C.s b/arm9/modules/05/asm/mod05_021DB44C.s
index eaee32f8..bba92897 100644
--- a/arm9/modules/05/asm/mod05_021DB44C.s
+++ b/arm9/modules/05/asm/mod05_021DB44C.s
@@ -255,7 +255,7 @@ MOD05_021DB61C: ; 0x021DB61C
 	str r1, [sp]
 	mov r0, #4
 	add r1, r2, #0
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	mov r1, #0
 	str r0, [sp, #0x14]
 	str r1, [sp, #8]
diff --git a/arm9/modules/05/asm/mod05_021DBEF4.s b/arm9/modules/05/asm/mod05_021DBEF4.s
index f65de9d8..ae93e2a3 100644
--- a/arm9/modules/05/asm/mod05_021DBEF4.s
+++ b/arm9/modules/05/asm/mod05_021DBEF4.s
@@ -120,7 +120,7 @@ _021DBFA8:
 	add r7, #0x10
 	mov r0, #4
 	add r1, sp, #0xc
-	bl FUN_020161A4
+	bl AllocAndReadFile
 	str r0, [r7, r5]
 	add r0, r6, #0
 	str r0, [sp, #8]
@@ -128,7 +128,7 @@ _021DBFA8:
 	str r0, [sp, #8]
 	ldr r0, [r7, r5]
 	mov r1, #4
-	bl FUN_02016324
+	bl OpenFileCached
 	ldr r1, [sp, #8]
 	str r0, [r1, r5]
 	add r0, r1, #0
diff --git a/arm9/modules/05/asm/module_05.s b/arm9/modules/05/asm/module_05.s
index 006e8bb1..913e5b00 100644
--- a/arm9/modules/05/asm/module_05.s
+++ b/arm9/modules/05/asm/module_05.s
@@ -13882,7 +13882,7 @@ MOD05_021EF4F8: ; 0x021EF4F8
 MOD05_021EF514: ; 0x021EF514
 	push {r3, r4, r5, r6, r7, lr}
 	add r5, r0, #0
-	bl FUN_020162FC
+	bl ClearFileCache
 	bl NNS_GfdResetLnkTexVramState
 	bl NNS_GfdResetLnkPlttVramState
 	mov r4, #0
diff --git a/arm9/modules/12/asm/module_12.s b/arm9/modules/12/asm/module_12.s
index effb333a..fcb737d8 100644
--- a/arm9/modules/12/asm/module_12.s
+++ b/arm9/modules/12/asm/module_12.s
@@ -102,7 +102,7 @@ MOD12_0222D5C0: ; 0x0222D5C0
 	bl FUN_0201C24C
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r2, #0x23
 	add r1, r4, #0
 	lsl r2, r2, #4
@@ -3237,7 +3237,7 @@ MOD12_0222EF04: ; 0x0222EF04
 	bl FUN_0201C24C
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, [r5, #0x30]
 	bl MOD12_0222F548
 	bl FUN_0201CC08
@@ -5099,7 +5099,7 @@ MOD12_0222FE4C: ; 0x0222FE4C
 	bl FUN_0201C24C
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r1, r5, #0
 	ldr r0, [r5]
 	add r1, #0x14
@@ -41182,7 +41182,7 @@ MOD12_02241210: ; 0x02241210
 	bl FUN_0201C24C
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	ldr r0, [r5, #0x30]
 	bl MOD12_02241864
 	bl FUN_0201CC08
diff --git a/arm9/modules/18/asm/module_18.s b/arm9/modules/18/asm/module_18.s
index 9b2fdf67..e84656ac 100644
--- a/arm9/modules/18/asm/module_18.s
+++ b/arm9/modules/18/asm/module_18.s
@@ -43226,7 +43226,7 @@ _0224E848: ; jump table
 _0224E858:
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl MOD18_0224E01C
 	ldr r3, _0224E940 ; =0x00000504
 	add r1, r6, #0
diff --git a/arm9/modules/53/asm/module_53.s b/arm9/modules/53/asm/module_53.s
index d070f979..3c747f56 100644
--- a/arm9/modules/53/asm/module_53.s
+++ b/arm9/modules/53/asm/module_53.s
@@ -60,7 +60,7 @@ _021D74F6:
 	str r0, [r4, #0x10]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl MOD53_021D78D0
 	ldr r0, [r4]
 	bl MOD53_021D78F0
diff --git a/arm9/modules/54/asm/module_54.s b/arm9/modules/54/asm/module_54.s
index b11b96cf..04f3927a 100644
--- a/arm9/modules/54/asm/module_54.s
+++ b/arm9/modules/54/asm/module_54.s
@@ -67,7 +67,7 @@ _021D74F6:
 	str r0, [r4, #0x28]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl MOD54_021D7874
 	ldr r0, [r4]
 	bl MOD54_021D7894
diff --git a/arm9/modules/55/asm/module_55.s b/arm9/modules/55/asm/module_55.s
index b9f3c277..f90f346e 100644
--- a/arm9/modules/55/asm/module_55.s
+++ b/arm9/modules/55/asm/module_55.s
@@ -43,7 +43,7 @@ MOD55_021D7504: ; 0x021D7504
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r0, #0x34
 	bl FUN_02016B94
 	str r0, [r4, #4]
diff --git a/arm9/modules/56/asm/module_56.s b/arm9/modules/56/asm/module_56.s
index 531194c6..2f71e04c 100644
--- a/arm9/modules/56/asm/module_56.s
+++ b/arm9/modules/56/asm/module_56.s
@@ -267,7 +267,7 @@ MOD56_02211FD4: ; 0x02211FD4
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r0, #0x36
 	bl FUN_02016B94
 	add r1, r4, #0
diff --git a/arm9/modules/57/asm/module_57.s b/arm9/modules/57/asm/module_57.s
index 481488f8..624f332c 100644
--- a/arm9/modules/57/asm/module_57.s
+++ b/arm9/modules/57/asm/module_57.s
@@ -28,7 +28,7 @@ MOD57_021D74E0: ; 0x021D74E0
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r2, #0xa
 	mov r0, #3
 	mov r1, #0x19
diff --git a/arm9/modules/58/asm/module_58.s b/arm9/modules/58/asm/module_58.s
index eb13ddb7..c3ac0512 100644
--- a/arm9/modules/58/asm/module_58.s
+++ b/arm9/modules/58/asm/module_58.s
@@ -66,7 +66,7 @@ _021D9A36:
 	str r0, [r4, #0x14]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl MOD58_021D9CDC
 	ldr r0, [r4]
 	bl MOD58_021D9CFC
diff --git a/arm9/modules/59/asm/mod59_021D74E0_asm.s b/arm9/modules/59/asm/mod59_021D74E0_asm.s
index 5604bf3c..c47887c1 100644
--- a/arm9/modules/59/asm/mod59_021D74E0_asm.s
+++ b/arm9/modules/59/asm/mod59_021D74E0_asm.s
@@ -56,7 +56,7 @@ _021D7592:
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0
 	bl MOD59_021D778C
 	add r0, r4, #0
diff --git a/arm9/modules/59/asm/mod59_021D9868.s b/arm9/modules/59/asm/mod59_021D9868.s
index 2925c404..78e2c5b2 100644
--- a/arm9/modules/59/asm/mod59_021D9868.s
+++ b/arm9/modules/59/asm/mod59_021D9868.s
@@ -81,7 +81,7 @@ _021D98C6:
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0
 	bl MOD59_021D9A20
 	add r0, r4, #0
diff --git a/arm9/modules/63/asm/mod63_021D74E0.s b/arm9/modules/63/asm/mod63_021D74E0.s
index ea96bf3b..d309fdee 100644
--- a/arm9/modules/63/asm/mod63_021D74E0.s
+++ b/arm9/modules/63/asm/mod63_021D74E0.s
@@ -37,7 +37,7 @@ MOD63_021D74E0: ; 0x021D74E0
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r2, #1
 	mov r0, #3
 	mov r1, #0x1e
diff --git a/arm9/modules/63/asm/mod63_021D8890.s b/arm9/modules/63/asm/mod63_021D8890.s
index 6f6f8f75..42cbfcd7 100644
--- a/arm9/modules/63/asm/mod63_021D8890.s
+++ b/arm9/modules/63/asm/mod63_021D8890.s
@@ -582,7 +582,7 @@ MOD63_021D8D10: ; 0x021D8D10
 	bl GX_DisableEngineBLayers
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r0, #3
 	mov r1, #0x4c
 	lsl r2, r0, #0x11
diff --git a/arm9/modules/67/asm/module_67.s b/arm9/modules/67/asm/module_67.s
index 60bd02b5..cc5e6e22 100644
--- a/arm9/modules/67/asm/module_67.s
+++ b/arm9/modules/67/asm/module_67.s
@@ -30,7 +30,7 @@ MOD67_021D74E0: ; 0x021D74E0
 	strh r1, [r3]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	mov r2, #2
 	mov r0, #3
 	mov r1, #0x2a
diff --git a/arm9/modules/68/asm/module_68.s b/arm9/modules/68/asm/module_68.s
index b2170444..3d73e7bd 100644
--- a/arm9/modules/68/asm/module_68.s
+++ b/arm9/modules/68/asm/module_68.s
@@ -73,7 +73,7 @@ MOD68_021D74E0: ; 0x021D74E0
 	bl MOD68_021D7870
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl FUN_0201CC08
 	mov r0, #4
 	bl FUN_0201CC24
diff --git a/arm9/modules/71/asm/module_71.s b/arm9/modules/71/asm/module_71.s
index 303bee40..613e6aa0 100644
--- a/arm9/modules/71/asm/module_71.s
+++ b/arm9/modules/71/asm/module_71.s
@@ -74,7 +74,7 @@ MOD71_0222D5C0: ; 0x0222D5C0
 	bl MOD71_0222E76C
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	bl MOD71_0222E558
 	mov r0, #0x5d
 	lsl r0, r0, #2
@@ -932,7 +932,7 @@ _0222DDA6:
 	mov r0, #0x50
 	bl FUN_02031588
 	mov r0, #2
-	bl FUN_020166A8
+	bl SetSoftResetDisableMask
 	add r0, r4, #0
 	bl MOD71_02230B88
 	ldr r0, [r4, #0x4c]
@@ -1317,7 +1317,7 @@ _0222E094:
 	mov r2, #1
 	bl MOD71_02230F40
 	mov r0, #2
-	bl FUN_020166B8
+	bl ClearSoftResetDisableMask
 	add sp, #0x10
 	mov r0, #1
 	pop {r3, r4, r5, r6, r7, pc}
diff --git a/arm9/modules/75/asm/module_75.s b/arm9/modules/75/asm/module_75.s
index 3500c458..fc726042 100644
--- a/arm9/modules/75/asm/module_75.s
+++ b/arm9/modules/75/asm/module_75.s
@@ -68,7 +68,7 @@ MOD75_021E6BA0: ; 0x021E6BA0
 	bl FUN_0200E1D0
 	mov r0, #3
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0
 	bl MOD75_021E7470
 	add r0, r4, #0
diff --git a/arm9/modules/77/asm/module_77.s b/arm9/modules/77/asm/module_77.s
index 6affcb88..1f240502 100644
--- a/arm9/modules/77/asm/module_77.s
+++ b/arm9/modules/77/asm/module_77.s
@@ -100,7 +100,7 @@ _021D7540:
 	bl GX_SwapDisplay
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r5, #0
 	bl MOD77_021D7C64
 	mov r0, #1
diff --git a/arm9/modules/80/asm/module_80.s b/arm9/modules/80/asm/module_80.s
index 83e02d71..56c92006 100644
--- a/arm9/modules/80/asm/module_80.s
+++ b/arm9/modules/80/asm/module_80.s
@@ -1453,7 +1453,7 @@ _0222DFE4:
 	str r0, [r4, r1]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0
 	add r1, r6, #0
 	bl MOD80_0222E338
diff --git a/arm9/modules/82/asm/module_82.s b/arm9/modules/82/asm/module_82.s
index f1a3e494..b897380f 100644
--- a/arm9/modules/82/asm/module_82.s
+++ b/arm9/modules/82/asm/module_82.s
@@ -695,7 +695,7 @@ _0222DA48:
 	str r0, [r4, r1]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0
 	add r1, r6, #0
 	bl MOD82_0222DD04
diff --git a/arm9/modules/83/asm/module_83.s b/arm9/modules/83/asm/module_83.s
index 09c161b4..354932d5 100644
--- a/arm9/modules/83/asm/module_83.s
+++ b/arm9/modules/83/asm/module_83.s
@@ -15353,11 +15353,11 @@ MOD83_02234E40: ; 0x02234E40
 	add r0, r4, #0
 	bl FUN_0202BF90
 	mov r0, #4
-	bl FUN_020166A8
+	bl SetSoftResetDisableMask
 	ldr r0, [r5, #0x10]
 	bl FUN_02022720
 	mov r0, #4
-	bl FUN_020166B8
+	bl ClearSoftResetDisableMask
 	pop {r3, r4, r5, pc}
 	thumb_func_end MOD83_02234E40
 
@@ -19168,7 +19168,7 @@ _02236CAE:
 	mov r0, #0x15
 	str r0, [r5]
 	mov r0, #4
-	bl FUN_020166A8
+	bl SetSoftResetDisableMask
 	b _02236D90
 _02236CF0:
 	ldr r0, _02236DB0 ; =0x0000E88C
@@ -19219,7 +19219,7 @@ _02236D36:
 	mov r0, #0x16
 	str r0, [r5]
 	mov r0, #4
-	bl FUN_020166B8
+	bl ClearSoftResetDisableMask
 	b _02236D90
 _02236D54:
 	ldr r0, _02236DC8 ; =gMain + 0x40
@@ -24577,7 +24577,7 @@ _022394E4: ; jump table
 	.short _02239538 - _022394E4 - 2 ; case 4
 _022394EE:
 	mov r0, #4
-	bl FUN_020166A8
+	bl SetSoftResetDisableMask
 	ldr r0, [r4, #0x14]
 	mov r1, #2
 	bl FUN_02022840
@@ -24610,7 +24610,7 @@ _02239528:
 	cmp r0, #1
 	bhi _02239534
 	mov r0, #4
-	bl FUN_020166B8
+	bl ClearSoftResetDisableMask
 _02239534:
 	add r0, r5, #0
 	pop {r3, r4, r5, pc}
@@ -24645,7 +24645,7 @@ MOD83_0223955C: ; 0x0223955C
 	ldr r0, [r0, #0x14]
 	bl FUN_0202287C
 	mov r0, #4
-	bl FUN_020166B8
+	bl ClearSoftResetDisableMask
 	pop {r3, pc}
 	nop
 _02239570: .word MOD83_0223BC30
diff --git a/arm9/modules/86/asm/module_86.s b/arm9/modules/86/asm/module_86.s
index 2bd7d12a..82dca844 100644
--- a/arm9/modules/86/asm/module_86.s
+++ b/arm9/modules/86/asm/module_86.s
@@ -57,7 +57,7 @@ MOD86_021D74E0: ; 0x021D74E0
 	str r0, [r2]
 	mov r0, #4
 	mov r1, #8
-	bl FUN_0201669C
+	bl SetKeyRepeatTimers
 	add r0, r4, #0
 	bl MOD86_021D76EC
 	add r0, r4, #0
diff --git a/arm9/src/error_message_reset.c b/arm9/src/error_message_reset.c
index 28627d6b..9996cbb1 100644
--- a/arm9/src/error_message_reset.c
+++ b/arm9/src/error_message_reset.c
@@ -61,7 +61,7 @@ THUMB_FUNC void PrintErrorMessageAndReset()
         reg_GX_DISPCNT &= 0xFFFFE0FF;
         reg_GXS_DB_DISPCNT &= 0xFFFFE0FF;
 
-        FUN_0201669C(4, 8);
+        SetKeyRepeatTimers(4, 8);
 
         gMain.unk65 = 0;
         GX_SwapDisplay();
diff --git a/arm9/src/game_init.c b/arm9/src/game_init.c
index 64ea7a54..2b8f8c8f 100644
--- a/arm9/src/game_init.c
+++ b/arm9/src/game_init.c
@@ -30,7 +30,7 @@ OS_DTCM;
 static struct {
     void * contents;
     u32 name_hash;
-} UNK_021C4928[128];
+} sFileCache[128];
 
 struct Main gMain;
 
@@ -136,7 +136,7 @@ void FUN_02015FC8(void)
     {
         csum += digest[i];
     }
-    csum = (csum << 24) >> 24;
+    csum %= 256;
     while (csum & 3)
     {
         csum++;
@@ -189,7 +189,7 @@ void InitGraphicMemory(void)
     MI_CpuClearFast((void *)HW_DB_PLTT, HW_DB_PLTT_SIZE);
 }
 
-void * FUN_020161A4(u32 heap_id, const char * path)
+void * AllocAndReadFile(u32 heap_id, const char * path)
 {
     void * ret;
 
@@ -214,7 +214,7 @@ void * FUN_020161A4(u32 heap_id, const char * path)
     return ret;
 }
 
-void FUN_020161F8(const char * path, void ** ptr)
+void OpenAndReadWholeFile(const char * path, void ** ptr)
 {
     FSFile file;
     FS_InitFile(&file);
@@ -227,94 +227,94 @@ void FUN_020161F8(const char * path, void ** ptr)
     }
 }
 
-u32 FUN_02016230(const s8 * str)
+u32 GetFilenameHash(const s8 * str)
 {
     u16 len = (u16)strlen(str);
-    u16 sp4;
+    u16 numWords;
     if ((len % 4) != 0)
-        sp4 = (u16)((len / 4) + 1);
+        numWords = (u16)((len / 4) + 1);
     else
-        sp4 = (u16)(len / 4);
-    u32 r7 = 0;
+        numWords = (u16)(len / 4);
+    u32 hash = 0;
     s32 i, j;
-    for (i = 0; i < sp4; i++)
+    for (i = 0; i < numWords; i++)
     {
-        u32 r1 = 0;
+        u32 curWord = 0;
         for (j = 0; j < 4; j++)
         {
-            int r5 = str[4 * i + j];
-            if (r5 == 0)
+            int curChar = str[4 * i + j];
+            if (curChar == 0)
                 break;
-            r1 |= r5 << (8 * j);
+            curWord |= curChar << (8 * j);
         }
-        r7 ^= r1;
+        hash ^= curWord;
     }
-    return r7;
+    return hash;
 }
 
-int FUN_020162A0(u32 a0)
+int GetFileCacheId(u32 hash)
 {
     for (int i = 0; i < 128; i++)
     {
-        if (UNK_021C4928[i].name_hash == a0 && UNK_021C4928[i].contents != NULL)
+        if (sFileCache[i].name_hash == hash && sFileCache[i].contents != NULL)
             return i;
     }
     return -1;
 }
 
-int FUN_020162C8(void * a0, u32 a1)
+int AddFileToCache(void * contents, u32 hash)
 {
     for (int i = 0; i < 128; i++)
     {
-        if (UNK_021C4928[i].contents == NULL)
+        if (sFileCache[i].contents == NULL)
         {
-            UNK_021C4928[i].contents = a0;
-            UNK_021C4928[i].name_hash = a1;
+            sFileCache[i].contents = contents;
+            sFileCache[i].name_hash = hash;
             return i;
         }
     }
     return -1;
 }
 
-void FUN_020162FC(void)
+void ClearFileCache(void)
 {
     for (int i = 127; i > -1; i--)
     {
-        if (UNK_021C4928[i].contents != NULL)
+        if (sFileCache[i].contents != NULL)
         {
-            FreeToHeap(UNK_021C4928[i].contents);
-            UNK_021C4928[i].contents = NULL;
-            UNK_021C4928[i].name_hash = 0;
+            FreeToHeap(sFileCache[i].contents);
+            sFileCache[i].contents = NULL;
+            sFileCache[i].name_hash = 0;
         }
     }
 }
 
-void * FUN_02016324(const s8 * str, u32 heap_id)
+void * OpenFileCached(const s8 * str, u32 heap_id)
 {
-    s8 sp0[32];
+    s8 filenameBuf[32];
     FSFile file;
     void * ret;
-    int r5 = 0;
+    int skipCache = 0;
 
     if (str[0] == '!')
     {
-        strcpy(sp0, str + 1);
-        r5 = 1;
+        strcpy(filenameBuf, str + 1);
+        skipCache = 1;
     }
     else
     {
-        strcpy(sp0, str);
+        strcpy(filenameBuf, str);
     }
-    u32 r7 = FUN_02016230(sp0);
-    s32 r0 = FUN_020162A0(r7);
-    if (r0 >= 0 && r5 == 0)
+    u32 hash = GetFilenameHash(filenameBuf);
+    s32 cacheId = GetFileCacheId(hash);
+    if (cacheId >= 0 && skipCache == 0)
     {
-        ret = UNK_021C4928[r0].contents;
+        ret = sFileCache[cacheId].contents;
     }
     else
     {
         FS_InitFile(&file);
-        if (FS_OpenFile(&file, (const char *)sp0))
+        if (FS_OpenFile(&file, (const char *)filenameBuf))
         {
             u32 size = file.prop.file.bottom - file.prop.file.top;
             ret = AllocFromHeap(heap_id, size);
@@ -327,8 +327,8 @@ void * FUN_02016324(const s8 * str, u32 heap_id)
                 }
             }
             FS_CloseFile(&file);
-            if (r5 == 0)
-                FUN_020162C8(ret, r7);
+            if (skipCache == 0)
+                AddFileToCache(ret, hash);
         }
         else
             ret = NULL;
@@ -336,24 +336,24 @@ void * FUN_02016324(const s8 * str, u32 heap_id)
     return ret;
 }
 
-void FUN_020163BC(void)
+void InitKeypadAndTouchpad(void)
 {
     TPCalibrateParam tp;
-    gMain.unk34 = 0;
-    gMain.unk38 = 0;
-    gMain.unk3C = 0;
-    gMain.unk40 = 0;
-    gMain.unk44 = 0;
+    gMain.buttonMode = 0;
+    gMain.heldKeysRaw = 0;
+    gMain.newKeysRaw = 0;
+    gMain.newAndRepeatedKeysRaw = 0;
+    gMain.heldKeys = 0;
     gMain.newKeys = 0;
     gMain.newAndRepeatedKeys = 0;
-    gMain.unk50 = 0;
-    gMain.unk54 = 8;
-    gMain.unk58 = 15;
-    gMain.unk5C = 0;
-    gMain.unk5E = 0;
-    gMain.unk60 = 0;
-    gMain.unk62 = 0;
-    gMain.unk64 = 0;
+    gMain.keyRepeatCounter = 0;
+    gMain.keyRepeatContinueDelay = 8;
+    gMain.keyRepeatStartDelay = 15;
+    gMain.touchX = 0;
+    gMain.touchY = 0;
+    gMain.touchNew = 0;
+    gMain.touchHeld = 0;
+    gMain.touchpadReadAuto = 0;
     TP_Init();
     if (TP_GetUserInfo(&tp) == TRUE)
         TP_SetCalibrateParam(&tp);
@@ -382,38 +382,53 @@ void FUN_02016454(u8 a0)
     gMain.unk67 &= ~a0;
 }
 
-void FUN_02016464(void)
+void ReadKeypadAndTocuhpad(void)
 {
     TPData raw, calib;
     if (PAD_DetectFold())
     {
+        // Can't press any buttons while the lid is closed.
         gMain.newKeys = 0;
-        gMain.unk44 = 0;
+        gMain.heldKeys = 0;
         gMain.newAndRepeatedKeys = 0;
-        gMain.unk60 = 0;
-        gMain.unk62 = 0;
+        gMain.touchNew = 0;
+        gMain.touchHeld = 0;
         return;
     }
-    u32 r0 = PAD_Read();
-    gMain.unk40 = gMain.unk3C = (r0 ^ gMain.unk38) & r0;
-    if (r0 != 0 && gMain.unk38 == r0)
+
+    u32 padRead = PAD_Read();
+
+    // newKeys is all keys that were pressed on this frame but
+    // not the last frame.
+    gMain.newAndRepeatedKeysRaw = gMain.newKeysRaw = (padRead ^ gMain.heldKeysRaw) & padRead;
+
+    // If you are holding down buttons, indicate them "repeated" every few frames
+    // as defined by .keyRepeatStartDelay and .keyRepeatContinueDelay.
+    // Same logic as gen3, but fixes the bug where the
+    // remapped keys are incorrectly used here.
+    // See also: pokeemerald/src/main.c:ReadKeys
+    if (padRead != 0 && gMain.heldKeysRaw == padRead)
     {
-        if (--gMain.unk50 == 0)
+        if (--gMain.keyRepeatCounter == 0)
         {
-            gMain.unk40 = r0;
-            gMain.unk50 = gMain.unk54;
+            gMain.newAndRepeatedKeysRaw = padRead;
+            gMain.keyRepeatCounter = gMain.keyRepeatContinueDelay;
         }
     }
     else
     {
-        gMain.unk50 = gMain.unk58;
+        gMain.keyRepeatCounter = gMain.keyRepeatStartDelay;
     }
-    gMain.unk38 = r0;
-    gMain.newKeys = gMain.unk3C;
-    gMain.unk44 = r0;
-    gMain.newAndRepeatedKeys = gMain.unk40;
-    FUN_02016568();
-    if (gMain.unk64 == 0)
+    gMain.heldKeysRaw = padRead;
+
+    // Apply the button mode option to the read key input
+    gMain.newKeys = gMain.newKeysRaw;
+    gMain.heldKeys = padRead;
+    gMain.newAndRepeatedKeys = gMain.newAndRepeatedKeysRaw;
+    ApplyButtonModeToInput();
+
+    // Read the touchpad. New to gen 4.
+    if (gMain.touchpadReadAuto == 0)
     {
         while (TP_RequestRawSampling(&raw))
             ;
@@ -421,111 +436,117 @@ void FUN_02016464(void)
     else
         TP_GetLatestRawPointInAuto(&raw);
     TP_GetCalibratedPoint(&calib, &raw);
-    if (calib.validity == 0)
+
+    // If the touchpad is valid, we gucci.
+    if (calib.validity == TP_VALIDITY_VALID)
     {
-        gMain.unk5C = calib.x;
-        gMain.unk5E = calib.y;
+        gMain.touchX = calib.x;
+        gMain.touchY = calib.y;
     }
-    else if (gMain.unk62)
+
+    // If the touchpad was used last frame, salvage what we can.
+    else if (gMain.touchHeld)
     {
         switch (calib.validity)
         {
-        case 1:
-            gMain.unk5E = calib.y;
+        case TP_VALIDITY_INVALID_X:
+            gMain.touchY = calib.y;
             break;
-        case 2:
-            gMain.unk5C = calib.x;
+        case TP_VALIDITY_INVALID_Y:
+            gMain.touchX = calib.x;
             break;
-        case 3:
+        case TP_VALIDITY_INVALID_XY:
             break;
         }
     }
+    // What was read from the touchpad was not salvageable.
+    // Ignore touch input.
     else
         calib.touch = 0;
-    gMain.unk60 = (u16)((gMain.unk62 ^ calib.touch) & calib.touch);
-    gMain.unk62 = calib.touch;
+    gMain.touchNew = (u16)((gMain.touchHeld ^ calib.touch) & calib.touch);
+    gMain.touchHeld = calib.touch;
 }
 
-void FUN_02016568(void)
+void ApplyButtonModeToInput(void)
 {
-    switch (gMain.unk34)
+    switch (gMain.buttonMode)
     {
     case 0: // Normal
         break;
     case 1: // Start = X
         if (gMain.newKeys & PAD_BUTTON_START)
             gMain.newKeys |= PAD_BUTTON_X;
-        if (gMain.unk44 & PAD_BUTTON_START)
-            gMain.unk44 |= PAD_BUTTON_X;
+        if (gMain.heldKeys & PAD_BUTTON_START)
+            gMain.heldKeys |= PAD_BUTTON_X;
         if (gMain.newAndRepeatedKeys & PAD_BUTTON_START)
             gMain.newAndRepeatedKeys |= PAD_BUTTON_X;
         break;
     case 2: // Swap X and Y; unused in the retail game
         {
-            u32 r1 = 0;
+            u32 swapMask = 0;
             if (gMain.newKeys & PAD_BUTTON_X)
             {
-                r1 |= PAD_BUTTON_Y;
+                swapMask |= PAD_BUTTON_Y;
             }
             if (gMain.newKeys & PAD_BUTTON_Y)
             {
-                r1 |= PAD_BUTTON_X;
+                swapMask |= PAD_BUTTON_X;
             }
-            gMain.newKeys &= 0xF3FF;
-            gMain.newKeys |= r1;
+            gMain.newKeys &= ((PAD_BUTTON_X | PAD_BUTTON_Y) ^ 0xFFFF);;
+            gMain.newKeys |= swapMask;
         }
         {
-            u32 r1 = 0;
-            if (gMain.unk44 & PAD_BUTTON_X)
+            u32 swapMask = 0;
+            if (gMain.heldKeys & PAD_BUTTON_X)
             {
-                r1 |= PAD_BUTTON_Y;
+                swapMask |= PAD_BUTTON_Y;
             }
-            if (gMain.unk44 & PAD_BUTTON_Y)
+            if (gMain.heldKeys & PAD_BUTTON_Y)
             {
-                r1 |= PAD_BUTTON_X;
+                swapMask |= PAD_BUTTON_X;
             }
-            gMain.unk44 &= 0xF3FF;
-            gMain.unk44 |= r1;
+            gMain.heldKeys &= ((PAD_BUTTON_X | PAD_BUTTON_Y) ^ 0xFFFF);
+            gMain.heldKeys |= swapMask;
         }
         {
-            u32 r1 = 0;
+            u32 swapMask = 0;
             if (gMain.newAndRepeatedKeys & PAD_BUTTON_X)
             {
-                r1 |= PAD_BUTTON_Y;
+                swapMask |= PAD_BUTTON_Y;
             }
             if (gMain.newAndRepeatedKeys & PAD_BUTTON_Y)
             {
-                r1 |= PAD_BUTTON_X;
+                swapMask |= PAD_BUTTON_X;
             }
-            gMain.newAndRepeatedKeys &= 0xF3FF;
-            gMain.newAndRepeatedKeys |= r1;
+            gMain.newAndRepeatedKeys &= ((PAD_BUTTON_X | PAD_BUTTON_Y) ^ 0xFFFF);
+            gMain.newAndRepeatedKeys |= swapMask;
         }
         break;
     case 3: // L = A
         if (gMain.newKeys & PAD_BUTTON_L)
             gMain.newKeys |= PAD_BUTTON_A;
-        if (gMain.unk44 & PAD_BUTTON_L)
-            gMain.unk44 |= PAD_BUTTON_A;
+        if (gMain.heldKeys & PAD_BUTTON_L)
+            gMain.heldKeys |= PAD_BUTTON_A;
         if (gMain.newAndRepeatedKeys & PAD_BUTTON_L)
             gMain.newAndRepeatedKeys |= PAD_BUTTON_A;
-        gMain.newKeys &= 0xFCFF;
-        gMain.unk44 &= 0xFCFF;
-        gMain.newAndRepeatedKeys &= 0xFCFF;
+        gMain.newKeys &= ((PAD_BUTTON_L | PAD_BUTTON_R) ^ 0xFFFF);
+        gMain.heldKeys &= ((PAD_BUTTON_L | PAD_BUTTON_R) ^ 0xFFFF);
+        gMain.newAndRepeatedKeys &= ((PAD_BUTTON_L | PAD_BUTTON_R) ^ 0xFFFF);
     }
 }
 
-void FUN_0201669C(int x, int y)
+void SetKeyRepeatTimers(int x, int y)
 {
-    gMain.unk54 = x;
-    gMain.unk58 = y;
+    gMain.keyRepeatContinueDelay = x;
+    gMain.keyRepeatStartDelay = y;
 }
 
-void FUN_020166A8(u8 a0)
+void SetSoftResetDisableMask(u8 a0)
 {
-    gMain.unk68 |= a0;
+    gMain.softResetDisabled |= a0;
 }
 
-void FUN_020166B8(u8 a0)
+void ClearSoftResetDisableMask(u8 a0)
 {
-    gMain.unk68 &= ~a0;
+    gMain.softResetDisabled &= ~a0;
 }
diff --git a/arm9/src/main.c b/arm9/src/main.c
index 7a8a14d8..1421ac48 100644
--- a/arm9/src/main.c
+++ b/arm9/src/main.c
@@ -54,10 +54,10 @@ THUMB_FUNC void NitroMain(void)
 {
     InitSystemForTheGame();
     InitGraphicMemory();
-    FUN_020163BC();
+    InitKeypadAndTouchpad();
     FUN_02016438(0);
 
-    PM_GetBackLight((PMBackLightSwitch *)SDK_STATIC_BSS_START, NULL);
+    PM_GetBackLight(&gBacklightTop, NULL);
 
     FUN_02022294();
     GF_InitRTCWork();
@@ -105,8 +105,8 @@ THUMB_FUNC void NitroMain(void)
     {
         FUN_02000EE8();
         HandleDSLidAction();
-        FUN_02016464();
-        if ((gMain.unk38 & SOFT_RESET_KEY) == SOFT_RESET_KEY && !gMain.unk68) // soft reset?
+        ReadKeypadAndTocuhpad();
+        if ((gMain.heldKeysRaw & SOFT_RESET_KEY) == SOFT_RESET_KEY && !gMain.softResetDisabled) // soft reset?
         {
             DoSoftReset(0); // soft reset?
         }
@@ -249,7 +249,7 @@ THUMB_FUNC void FUN_02000F4C(u32 arg0, u32 arg1)
     while (1)
     {
         HandleDSLidAction();
-        FUN_02016464();
+        ReadKeypadAndTocuhpad();
         if (gMain.newKeys & 1)
             break;
         FUN_02000E9C();
diff --git a/arm9/src/options.c b/arm9/src/options.c
index 296b398a..03b63864 100644
--- a/arm9/src/options.c
+++ b/arm9/src/options.c
@@ -35,14 +35,14 @@ void Options_SetButtonModeOnMain(struct SaveBlock2 * sav2, u32 buttonMode) {
 
     switch (buttonMode) {
         case 1:
-            gMain.unk34 = 1;
+            gMain.buttonMode = 1;
             break;
         case 2:
-            gMain.unk34 = 3;
+            gMain.buttonMode = 3;
             break;
         case 0:
         default:
-            gMain.unk34 = 0;
+            gMain.buttonMode = 0;
             break;
     }
 }
diff --git a/arm9/src/unk_02016B94.c b/arm9/src/unk_02016B94.c
index 6a9dd194..19ec831d 100644
--- a/arm9/src/unk_02016B94.c
+++ b/arm9/src/unk_02016B94.c
@@ -7745,7 +7745,7 @@ THUMB_FUNC void FUN_0201AB24(struct Window *window, u8 param1)
 
 THUMB_FUNC u32 FUN_0201AB28(struct Window *window, u32 heap_id, const char *path)
 {
-    void *ptr = FUN_020161A4(heap_id, path);
+    void *ptr = AllocAndReadFile(heap_id, path);
     window->unk00 = ptr;
     u32 st0;
     NNS_G2dGetUnpackedBGCharacterData(ptr, &st0);
@@ -7755,7 +7755,7 @@ THUMB_FUNC u32 FUN_0201AB28(struct Window *window, u32 heap_id, const char *path
 
 THUMB_FUNC u32 FUN_0201AB44(struct Window *window, u32 heap_id, const char *path)
 {
-    void *ptr = FUN_020161A4(heap_id, path);
+    void *ptr = AllocAndReadFile(heap_id, path);
     window->unk00 = ptr;
     u32 st0;
     NNS_G2dGetUnpackedPaletteData(ptr, &st0);
diff --git a/arm9/src/unk_0202F150.c b/arm9/src/unk_0202F150.c
index 09b5b56f..ef9a6193 100644
--- a/arm9/src/unk_0202F150.c
+++ b/arm9/src/unk_0202F150.c
@@ -535,7 +535,7 @@ THUMB_FUNC BOOL FUN_0202FB80()
         {
             UNK_021C59F4.unk00 = 0;
             FUN_0202F984();
-            UNK_021C59F4.unk04->unk628 |= gMain.unk44 & 0x7FFF;
+            UNK_021C59F4.unk04->unk628 |= gMain.heldKeys & 0x7FFF;
             FUN_02030674();
             FUN_0202FCCC();
 
diff --git a/arm9/src/unk_02031734.c b/arm9/src/unk_02031734.c
index 57764b82..49283907 100644
--- a/arm9/src/unk_02031734.c
+++ b/arm9/src/unk_02031734.c
@@ -1807,7 +1807,7 @@ THUMB_FUNC void FUN_020331C4()
 {
     if (UNK_021C5A00 != NULL)
     {
-        FUN_020166B8(1);
+        ClearSoftResetDisableMask(1);
         FUN_02031D20(FUN_02032440, 5);
     }
 }
@@ -1875,7 +1875,7 @@ THUMB_FUNC void FUN_02033288(struct SaveBlock2 *sav2)
         UNK_021C5A00->unk46 = 1;
         UNK_021C5A00->unk28 = sav2;
         FUN_020334E8(0, 1);
-        FUN_020166A8(1);
+        SetSoftResetDisableMask(1);
     }
 }
 
@@ -1883,7 +1883,7 @@ THUMB_FUNC void FUN_020332DC()
 {
     if (UNK_021C5A00 != 0)
     {
-        FUN_020166B8(1);
+        ClearSoftResetDisableMask(1);
         FUN_020334E8(0, 0);
         FreeToHeap(UNK_021C5A00);
         UNK_021C5A00 = NULL;
@@ -1903,7 +1903,7 @@ THUMB_FUNC void FUN_02033310(struct SaveBlock2 *sav2)
         UNK_021C5A00->unk46 = 1;
         UNK_021C5A00->unk28 = sav2;
         FUN_020334E8(0, 1);
-        FUN_020166A8(1);
+        SetSoftResetDisableMask(1);
     }
 }
 
@@ -1911,7 +1911,7 @@ THUMB_FUNC void FUN_02033364()
 {
     if (UNK_021C5A00 != 0)
     {
-        FUN_020166B8(1);
+        ClearSoftResetDisableMask(1);
         FUN_020334E8(0, 0);
         FreeToHeap(UNK_021C5A00);
         UNK_021C5A00 = NULL;
@@ -1985,7 +1985,7 @@ THUMB_FUNC void *FUN_0203346C(struct SaveBlock2 *sav2, u32 param1)
         return 0;
     }
 
-    FUN_020166A8(1);
+    SetSoftResetDisableMask(1);
     FUN_02016828(3, 0xf, 0x7080);
     FUN_02031734(sav2, 0x17);
     UNK_021C5A00->unk00 = AllocFromHeap(0xf, param1);
@@ -2127,7 +2127,7 @@ THUMB_FUNC void FUN_020335F4()
 
         FUN_0200541C();
         FUN_0202287C(UNK_021C5A00->unk28);
-        gMain.unk64 = 1;
+        gMain.touchpadReadAuto = 1;
         if (UNK_021C5A00->unk4E == 3)
         {
             FUN_020335A4(3);
diff --git a/include/game_init.h b/include/game_init.h
index 7a6e34fb..6aaeb6b4 100644
--- a/include/game_init.h
+++ b/include/game_init.h
@@ -14,21 +14,21 @@ void Main_HBlankIntr(BOOL a0);
 void FUN_02015FC8(void);
 void InitSystemForTheGame(void);
 void InitGraphicMemory(void);
-void * FUN_020161A4(u32 heap_id, const char * path);
-void FUN_020161F8(const char * path, void ** ptr);
-u32 FUN_02016230(const s8 * str);
-int FUN_020162A0(u32 a0);
-int FUN_020162C8(void * a0, u32 a1);
-void FUN_020162FC(void);
-void * FUN_02016324(const s8 * str, u32 heap_id);
-void FUN_020163BC(void);
+void * AllocAndReadFile(u32 heap_id, const char * path);
+void OpenAndReadWholeFile(const char * path, void ** ptr);
+u32 GetFilenameHash(const s8 * str);
+int GetFileCacheId(u32 hash);
+int AddFileToCache(void * contents, u32 hash);
+void ClearFileCache(void);
+void * OpenFileCached(const s8 * str, u32 heap_id);
+void InitKeypadAndTouchpad(void);
 void FUN_02016438(u8 a0);
 void FUN_02016444(u8 a0);
 void FUN_02016454(u8 a0);
-void FUN_02016464(void);
-void FUN_02016568(void);
-void FUN_0201669C(int x, int y);
-void FUN_020166A8(u8 a0);
-void FUN_020166B8(u8 a0);
+void ReadKeypadAndTocuhpad(void);
+void ApplyButtonModeToInput(void);
+void SetKeyRepeatTimers(int x, int y);
+void SetSoftResetDisableMask(u8 a0);
+void ClearSoftResetDisableMask(u8 a0);
 
 #endif //POKEDIAMOND_GAME_INIT_H
diff --git a/include/main.h b/include/main.h
index 9227d9a8..ba4d7bc2 100644
--- a/include/main.h
+++ b/include/main.h
@@ -79,26 +79,26 @@ struct Main
     s32 unk28;
     u32 unk2C;
     s32 unk30;
-    u32 unk34;
-    u32 unk38;
-    u32 unk3C;
-    u32 unk40;
-    u32 unk44;
+    u32 buttonMode;
+    u32 heldKeysRaw;
+    u32 newKeysRaw;
+    u32 newAndRepeatedKeysRaw;
+    u32 heldKeys;
     u32 newKeys;
     u32 newAndRepeatedKeys;
-    s32 unk50;
-    s32 unk54;
-    s32 unk58;
-    u16 unk5C;
-    u16 unk5E;
-    u16 unk60;
-    u16 unk62;
-    u8 unk64;
+    s32 keyRepeatCounter;
+    s32 keyRepeatContinueDelay;
+    s32 keyRepeatStartDelay;
+    u16 touchX;
+    u16 touchY;
+    u16 touchNew;
+    u16 touchHeld;
+    u8 touchpadReadAuto;
     u8 unk65;
     u8 unk66;
     u8 unk67;
-    u8 unk68;
-    u8 padding_69[3];
+    u8 softResetDisabled;
+    u8 padding_69[3]; // nice
     s32 unk6C;
 };