diff --git a/src/SB/Core/x/xWad5.cpp b/src/SB/Core/x/xWad5.cpp
index 6f8e255..d4315c7 100644
--- a/src/SB/Core/x/xWad5.cpp
+++ b/src/SB/Core/x/xWad5.cpp
@@ -266,14 +266,41 @@ char* xUtil_idtag2string(U32 srctag, S32 bufidx)
 
 S32 xUtilShutdown()
 {
-    return g_xutilinit--;
+    return --g_xutilinit;
 }
 
 S32 xUtilStartup()
 {
     if (!g_xutilinit++)
     {
-        xUtil_crc_init();
+        // From xUtil_crc_init:
+
+        S32 i, j;
+        U32 crc_accum;
+    
+        if (g_crc_needinit)
+        {
+            for (i = 0; i < 256; i++)
+            {
+                crc_accum = (U32)i << 24;
+    
+                for (j = 0; j < 8; j++)
+                {
+                    if (crc_accum & (1 << 31))
+                    {
+                        crc_accum = (crc_accum << 1) ^ 0x04C11DB7;
+                    }
+                    else
+                    {
+                        crc_accum = (crc_accum << 1);
+                    }
+                }
+    
+                g_crc32_table[i] = crc_accum;
+            }
+    
+            g_crc_needinit = 0;
+        }
     }
 
     return g_xutilinit;
@@ -468,6 +495,26 @@ S32 icompare(const substr& s1, const substr& s2)
     return result;
 }
 
+S32 imemcmp(const void* d1, const void* d2, unsigned long size)
+{
+    char* s1 = (char*)d1;
+    char* s2 = (char*)d2;
+    U32 i = 0;
+    while (i < size)
+    {
+        S32 v1 = *s1 | ((*s1 >> 1) & 0x20);
+        S32 v2 = *s2 | ((*s2 >> 1) & 0x20);
+        if (v1 != v2)
+        {
+            return v1 - v2;
+        }
+        s1++;
+        s2++;
+        i++;
+    }
+    return 0;
+}
+
 char* xStrupr(char* string)
 {
     char* p = string;
@@ -490,7 +537,7 @@ U32 xStrHashCat(U32 prefix, const char* str)
     while (i = *str, i != NULL)
     {
         str++;
-        hash = (i - (i & (S32)i >> 1 & 0x20) & 0xff) + hash * 0x83;
+        hash = (i - (i & (U8)i >> 1 & 0x20) & 0xff) + hash * 0x83;
     }
 
     return hash;
@@ -506,7 +553,7 @@ U32 xStrHash(const char* str, size_t size)
     {
         i++;
         str++;
-        hash = (c - (c & (S32)c >> 1 & 0x20) & 0xff) + hash * 0x83;
+        hash = (c - (c & (U8)c >> 1 & 0x20) & 0xff) + hash * 0x83;
     }
 
     return hash;
@@ -519,7 +566,7 @@ U32 xStrHash(const char* str)
 
     while (i = *str, i != NULL)
     {
-        hash = (i - (i & (S32)i >> 1 & 0x20) & 0xff) + hash * 0x83;
+        hash = (i - (i & (U8)i >> 1 & 0x20) & 0xff) + hash * 0x83;
         str++;
     }