From 6d13a1c4fbf0d34f0746a9bee6768d1f05d60807 Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Sat, 9 Oct 2021 07:54:32 +1000
Subject: [PATCH] Attempt to decompile vi00009ed4

---
 src/include/bss.h           |  4 ++--
 src/include/data.h          |  2 +-
 src/include/lib/lib_09a80.h |  2 +-
 src/lib/lib_09a80.c         | 37 +++++++++++++++++++++++++++++++++++++
 src/lib/sched.c             |  6 +++---
 5 files changed, 44 insertions(+), 7 deletions(-)

diff --git a/src/include/bss.h b/src/include/bss.h
index 6ec6016ac..0b19bad47 100644
--- a/src/include/bss.h
+++ b/src/include/bss.h
@@ -15,8 +15,8 @@ extern OSSched g_SchedThread;
 extern OSViMode var8008dcc0[2];
 extern OSViMode *var8008dd60[2];
 extern u32 var8008de08;
-extern u32 var8008de0c;
-extern u32 var8008de10;
+extern s32 var8008de0c;
+extern s32 var8008de10;
 extern u8 g_BootBufferDirtyIndexes[3];
 extern s32 g_BootBufferIndex0;
 extern OSPiHandle CartRomHandle;
diff --git a/src/include/data.h b/src/include/data.h
index f43ff635a..800361b07 100644
--- a/src/include/data.h
+++ b/src/include/data.h
@@ -20,7 +20,7 @@ extern f32 var8005ce78[2];
 extern f32 var8005ce80[2];
 extern u32 var8005ce88[2];
 extern s32 g_ViUnblackTimer;
-extern u32 var8005ce94;
+extern s32 var8005ce94;
 extern s32 var8005ce98;
 extern u32 var8005ce9c;
 extern OSMesg var8005cea8;
diff --git a/src/include/lib/lib_09a80.h b/src/include/lib/lib_09a80.h
index b69733223..b32e65b05 100644
--- a/src/include/lib/lib_09a80.h
+++ b/src/include/lib/lib_09a80.h
@@ -15,7 +15,7 @@ void vi00009b50(u8 *fb);
 void vi00009bf8(void);
 void viAllocateFbs(s32 stagenum);
 void viBlack(bool black);
-u32 vi00009ed4(void);
+void vi00009ed4(void);
 void vi0000a044(void);
 void vi0000aa50(f32 arg0);
 void vi0000aab0(s32 arg0);
diff --git a/src/lib/lib_09a80.c b/src/lib/lib_09a80.c
index 9a3a78496..572a13380 100644
--- a/src/lib/lib_09a80.c
+++ b/src/lib/lib_09a80.c
@@ -448,6 +448,43 @@ glabel vi00009ed4
 );
 #endif
 
+// Mismatch: regalloc
+//void vi00009ed4(void)
+//{
+//	s32 prevmask;
+//	s32 value;
+//
+//	if (var8005ce9c != 0) {
+//		var8005ce9c--;
+//
+//		if (var8005ce9c == 0) {
+//			var8005ce98 = 0;
+//		}
+//	}
+//
+//	value = var8005ce94 * var8005ce98;
+//	var8005ce94 = -var8005ce94;
+//
+//#if VERSION >= VERSION_NTSC_1_0
+//	prevmask = osSetIntMask(1);
+//#endif
+//
+//	var8008dd60[1 - var8005ce74]->fldRegs[0].vStart =
+//		((var8008de0c >> 16) + value) << 16 | var8008de0c + value & 0xffff;
+//	var8008dd60[1 - var8005ce74]->fldRegs[1].vStart =
+//		((var8008de10 >> 16) + value) << 16 | var8008de10 + value & 0xffff;
+//
+//#if VERSION >= VERSION_NTSC_1_0
+//	osSetIntMask(prevmask);
+//#endif
+//
+//	osViSetMode(var8008dd60[1 - var8005ce74]);
+//	osViBlack(g_ViUnblackTimer);
+//	osViSetXScale(var8005ce78[1 - var8005ce74]);
+//	osViSetYScale(var8005ce80[1 - var8005ce74]);
+//	osViSetSpecialFeatures(OS_VI_GAMMA_OFF | OS_VI_DITHER_FILTER_ON);
+//}
+
 #if VERSION >= VERSION_PAL_FINAL
 GLOBAL_ASM(
 glabel vi0000a044
diff --git a/src/lib/sched.c b/src/lib/sched.c
index 097b21283..4a50934f2 100644
--- a/src/lib/sched.c
+++ b/src/lib/sched.c
@@ -22,8 +22,8 @@ OSViMode var8008dcc0[2];
 OSViMode *var8008dd60[2];
 OSViMode var8008dd68[2];
 u32 var8008de08;
-u32 var8008de0c;
-u32 var8008de10;
+s32 var8008de0c;
+s32 var8008de10;
 u32 var8008de14;
 OSTimer var8008de18;
 u32 var8008de38;
@@ -46,7 +46,7 @@ f32 var8005ce78[2] = {1, 1};
 f32 var8005ce80[2] = {1, 1};
 u32 var8005ce88[2] = {0};
 s32 g_ViUnblackTimer = 3;
-u32 var8005ce94 = 0x00000001;
+s32 var8005ce94 = 1;
 s32 var8005ce98 = 0;
 u32 var8005ce9c = 0x00000000;
 u32 var8005cea0 = 0x00000000;