diff --git a/include/input.h b/include/input.h
index ff46c60..8241266 100644
--- a/include/input.h
+++ b/include/input.h
@@ -21,5 +21,10 @@ extern u16 gButtonCurrent;
 extern s8 gJoyX;
 extern s8 gJoyY;
 
+extern u16 D_800BE50C;
+extern u16 D_800BE510;
+extern u16 D_800BE508;
+extern u16 D_800BE504;
+
 #endif
 
diff --git a/src/marina.c b/src/marina.c
index 43c590e..ef6f0ee 100644
--- a/src/marina.c
+++ b/src/marina.c
@@ -1,6 +1,50 @@
 #include "common.h"
 
+#include "boot.h"
+
+#include "input.h"
+
+typedef struct {
+    u32 flags;
+    u8 pad[0x54];
+} MarinaEntry;
+
+extern MarinaEntry D_800EF590[];
+
+#ifdef NON_MATCHING
+u8 func_80048600(s32 arg0) {
+    u16 idx = (u16)arg0;
+    u16 flags = D_801370CC;
+    u8 ret;
+
+    if (flags & D_800BE50C) {
+        ret = 1;
+        if (D_800EF590[idx].flags & 0x20) {
+            ret = 0x81;
+        }
+    } else {
+        ret = 0;
+        if (flags & D_800BE510) {
+            ret = 2;
+            if (D_800EF590[idx].flags & 0x20) {
+                ret = 0x82;
+            }
+        }
+    }
+
+    if (flags & D_800BE508) {
+        ret = (u8)(ret | 0x10);
+    }
+
+    if (flags & D_800BE504) {
+        ret = (u8)(ret | 0x20);
+    }
+
+    return ret;
+}
+#else
 #pragma GLOBAL_ASM("asm/nonmatchings/marina/func_80048600.s")
+#endif
 
 #pragma GLOBAL_ASM("asm/nonmatchings/marina/func_800486F4.s")
 
diff --git a/versions/us1/mischiefmakers.yaml b/versions/us1/mischiefmakers.yaml
index 35e0166..9322849 100644
--- a/versions/us1/mischiefmakers.yaml
+++ b/versions/us1/mischiefmakers.yaml
@@ -97,7 +97,7 @@ segments:
       - [0x027F70, asm] # has to do with on screen text
       - [0x0438E0, asm]
       - [0x048A30, asm]
-      - [0x049200, asm, marina]
+      - [0x049200, c, marina]
       - [0x04FEB0, asm]
       - [0x059EA0, asm]
       - [0x05D120, asm]
diff --git a/versions/us1/undefined_syms.txt b/versions/us1/undefined_syms.txt
index 80b7fc4..5e8188f 100644
--- a/versions/us1/undefined_syms.txt
+++ b/versions/us1/undefined_syms.txt
@@ -11,4 +11,26 @@ rspbootTextEnd = 0x800BAAB0;
 gspFast3DTextStart = 0x800BAAB0;
 gspFast3DDataStart = 0x800EEA10;
 aspMainTextStart = 0x800BBEB0;
-
+D_801373F1 = 0x801373F1;
+D_800E45D0 = 0x800E45D0;
+D_800E4698 = 0x800E4698;
+D_800E574C = 0x800E574C;
+D_800E57D4 = 0x800E57D4;
+D_800E58D4 = 0x800E58D4;
+D_800E1180 = 0x800E1180;
+D_800E58F0 = 0x800E58F0;
+D_800E5910 = 0x800E5910;
+D_800E59E0 = 0x800E59E0;
+D_800E5970 = 0x800E5970;
+D_800E5938 = 0x800E5938;
+D_8019E574 = 0x8019E574;
+D_8019E580 = 0x8019E580;
+D_800E118C = 0x800E118C;
+D_800E1198 = 0x800E1198;
+D_800E11A0 = 0x800E11A0;
+D_800E11AC = 0x800E11AC;
+D_800E0648 = 0x800E0648;
+D_801376BE = 0x801376BE;
+D_801376B6 = 0x801376B6;
+D_8019E578 = 0x8019E578;
+D_8019E57C = 0x8019E57C;