diff --git a/source/blood/src/barf.cpp b/source/blood/src/barf.cpp
index 5b2fc2ba3..a90233891 100644
--- a/source/blood/src/barf.cpp
+++ b/source/blood/src/barf.cpp
@@ -55,7 +55,7 @@ char scriptBuffer[256];
 
 struct define_t
 {
-    char *_text;
+    FString _text;
     int   _value;
 };
 
@@ -132,9 +132,7 @@ void AddCmdDefine(char *text, int value)
 {
     dassert(nCmdDefines < kMaxCmdLineDefines);
 
-    gCmdDefines[nCmdDefines]._text = (char*)Resource::Alloc(strlen(text) + 1);
-
-    strcpy(gCmdDefines[nCmdDefines]._text, text);
+	gCmdDefines[nCmdDefines]._text = text;
     gCmdDefines[nCmdDefines]._value = value;
 
     nCmdDefines++;
@@ -144,6 +142,7 @@ void AddCmdDefine(char *text, int value)
 struct RFS
 {
 private:
+	TArray<char> buffer;
     char *_ptr;         // [0]
     char _curChar;      // [4]
     char *_pUnknown2;   // [5]  - some sort of pointer into _ptr?
@@ -177,7 +176,8 @@ int RFS::Open(const char *fileName)
     }
 
 	int fileSize = hFile.GetLength();
-    _ptr = (char*)Resource::Alloc(fileSize);
+	buffer.Resize(fileSize);
+    _ptr = buffer.Data();
     if (_ptr == NULL) {
         initprintf("BARF: Not enough memory to read %s", _fileName);
         return 1;
@@ -195,12 +195,6 @@ int RFS::Open(const char *fileName)
 
 void RFS::Close()
 {
-    if (_ptr) {
-/* BUG - the original code called nfree but this should be a Resource::Free()
-        _nfree(_ptr);
-*/
-        Resource::Free(_ptr);
-    }
 }
 
 void RFS::Increment()
@@ -586,7 +580,6 @@ void ParseScript(const char *scriptFileName)
                     }
 
                     ID = scriptValue;
-                    nFlags |= DICT_ID;
                     tag = rfs.GetNextTag();
                 }
 
@@ -767,7 +760,6 @@ void ParseScript(const char *scriptFileName)
                         //    AddDefine(fileName, scriptValue);
                         //}
 
-                        nFlags |= DICT_ID;
                         ID = scriptValue;
                         tag = rfs.GetNextTag();
                     }
diff --git a/source/blood/src/blood.cpp b/source/blood/src/blood.cpp
index 0339f9c8a..42ca2fada 100644
--- a/source/blood/src/blood.cpp
+++ b/source/blood/src/blood.cpp
@@ -194,11 +194,13 @@ void ShutDown(void)
     // PORT_TODO: Check argument
     if (syncstate)
         printf("A packet was lost! (syncstate)\n");
+#if 0 // never used anywhere.
     for (int i = 0; i < 10; i++)
     {
         if (gSaveGamePic[i])
             Resource::Free(gSaveGamePic[i]);
     }
+#endif
     DO_FREE_AND_NULL(pUserTiles);
     DO_FREE_AND_NULL(pUserSoundRFF);
     DO_FREE_AND_NULL(pUserRFF);
@@ -387,16 +389,25 @@ void PreloadTiles(void)
     gameHandleEvents();
 }
 
+static void PrecacheSounds(void)
+{
+	for (unsigned int i = 0; i < fileSystem.GetNumEntries(); i++)
+	{
+		DICTNODE* pNode = fileSystem.GetFileAt(i);
+		if (pNode->ResType() == NAME_RAW || pNode->ResType() == NAME_SFX)
+		{
+			pNode->Get();
+			if ((i&15) == 15) gameHandleEvents();	// don't do this too often. That made sense in 1996 but not in 2019
+		}
+	}
+}
 
 void PreloadCache(void)
 {
     char tempbuf[128];
     if (gDemo.at1)
         return;
-    gSysRes.PurgeCache();
-    gSoundRes.PurgeCache();
-    gSysRes.PrecacheSounds();
-    gSoundRes.PrecacheSounds();
+    PrecacheSounds();
     if (mus_restartonload)
         sndTryPlaySpecialMusic(MUS_LOADING);
     PreloadTiles();
@@ -1301,9 +1312,9 @@ int app_main(int argc, char const * const * argv)
 #ifdef USE_QHEAP
     Resource::heap = new QHeap(nMaxAlloc);
 #endif
-    gSysRes.Init(pUserRFF ? pUserRFF : "BLOOD.RFF");
+    //gSysRes.Init(pUserRFF ? pUserRFF : "BLOOD.RFF");
     //gGuiRes.Init("GUI.RFF");
-    gSoundRes.Init(pUserSoundRFF ? pUserSoundRFF : "SOUNDS.RFF");
+    //gSoundRes.Init(pUserSoundRFF ? pUserSoundRFF : "SOUNDS.RFF");
 
     HookReplaceFunctions();
 
@@ -1896,10 +1907,7 @@ static int parsedefinitions_game(scriptfile *pScript, int firstPass)
 
             if (!firstPass)
             {
-                if (!Bstrcasecmp(rffName, "SYSTEM"))
-                    gSysRes.AddExternalResource(resName, resType, resID);
-                else if (!Bstrcasecmp(rffName, "SOUND"))
-                    gSoundRes.AddExternalResource(resName, resType, resID);
+                gSysRes.AddExternalResource(resName, resType, resID);
             }
         }
         break;
diff --git a/source/blood/src/gamemenu.cpp b/source/blood/src/gamemenu.cpp
index 61da6c62a..0b61895d3 100644
--- a/source/blood/src/gamemenu.cpp
+++ b/source/blood/src/gamemenu.cpp
@@ -2241,7 +2241,7 @@ bool CGameMenuItemQAV::Event(CGameMenuEvent &event)
         if (at20 && at28)
         {
             gSysRes.Unlock(at24);
-            if (at24->lockCount == 0)
+            if (at24->LockCount() == 0)
                 at28 = NULL;
         }
         return false;
diff --git a/source/blood/src/globals.cpp b/source/blood/src/globals.cpp
index d5e30817b..f0d5b68b5 100644
--- a/source/blood/src/globals.cpp
+++ b/source/blood/src/globals.cpp
@@ -44,7 +44,7 @@ int gGamma;
 char *gVersionString;
 char gVersionStringBuf[16];
 
-Resource gSysRes;
+Resource& gSysRes = fileSystem;
 
 static const char *_module;
 static int _line;
diff --git a/source/blood/src/globals.h b/source/blood/src/globals.h
index 6e641bdce..1a3e778f5 100644
--- a/source/blood/src/globals.h
+++ b/source/blood/src/globals.h
@@ -35,7 +35,7 @@ extern int gFrameRate;
 extern int gGamma;
 extern bool bVanilla;
 
-extern Resource gSysRes;
+extern Resource &gSysRes;
 const char *GetVersionString(void);
 
 END_BLD_NS
diff --git a/source/blood/src/loadsave.cpp b/source/blood/src/loadsave.cpp
index d6b09a352..d576f6106 100644
--- a/source/blood/src/loadsave.cpp
+++ b/source/blood/src/loadsave.cpp
@@ -65,8 +65,10 @@ short word_27AA54 = 0;
 
 void sub_76FD4(void)
 {
+#if 0
     if (!dword_27AA44)
         dword_27AA44 = Resource::Alloc(0x186a0);
+#endif
 }
 
 void LoadSave::Save(void)
diff --git a/source/blood/src/resource.cpp b/source/blood/src/resource.cpp
index 31086a519..5086641e4 100644
--- a/source/blood/src/resource.cpp
+++ b/source/blood/src/resource.cpp
@@ -45,9 +45,9 @@ BEGIN_BLD_NS
 
 
 
-
+// Code left here for documentation. 
+// It's unlikely to be needed by today's systems so unless needed I rather leave such hacks out of the file system.
 #if B_BIG_ENDIAN == 1
-// Todo: Hook these up with the resource loader
 void ByteSwapQAV(void *p)
 {
 	QAV *qav = (QAV*)p;
diff --git a/source/blood/src/resource.h b/source/blood/src/resource.h
index ec58485e2..11b3b5caf 100644
--- a/source/blood/src/resource.h
+++ b/source/blood/src/resource.h
@@ -23,115 +23,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #pragma once
 
 #include "common.h"
-#include "qheap.h"
+#include "filesystem/resourcefile.h"
+#include "filesystem/filesystem.h"
 
-BEGIN_BLD_NS
-
-#pragma pack(push, 1)
-
-enum DICTFLAGS {
-    DICT_ID = 1,
-    DICT_EXTERNAL = 2,
-    DICT_LOAD = 4,
-    DICT_LOCK = 8,
-    DICT_CRYPT = 16,
-    DICT_BUFFER = 32,
-};
-
-struct RFFHeader
-{
-    char sign[4];
-    short version;
-    short pad1;
-    unsigned int offset;
-    unsigned int filenum;
-    int pad2[4];
-};
-
-struct DICTNODE_FILE
-{
-    char unused1[16];
-    unsigned int offset;
-    unsigned int size;
-    char unused2[8];
-    char flags;
-    char type[3];
-    char name[8];
-    int id;
-};
-
-#pragma pack(pop)
-
-struct CACHENODE
-{
-    void *ptr;
-    CACHENODE *prev;
-    CACHENODE *next;
-    int lockCount;
-};
-
-struct DICTNODE : CACHENODE
-{
-    unsigned int offset;
-    unsigned int size;
-    char flags;
-    //char type[3];
-    //char name[8];
-    char *type;
-    char *name;
-    char *path;
-    char *buffer;
-    unsigned int id;
-	
-	unsigned int Size() const { return size; }
-	int LockCount() const { return lockCount; }
-};
-
-class Resource
-{
-public:
-    Resource(void);
-    ~Resource(void);
-
-    void Init(const char *filename);
-    static void Flush(CACHENODE *h);
-    void Purge(void);
-    DICTNODE **Probe(const char *fname, const char *type);
-    DICTNODE **Probe(unsigned int id, const char *type);
-    void Reindex(void);
-    void Grow(void);
-    void AddExternalResource(const char *name, const char *type, int id = 0, int flags = 0, const char* pzDirectory = NULL);
-    void AddFromBuffer(const char* name, const char* type, char *data, int size, int id = 0, int flags = 0);
-    static void *Alloc(int nSize);
-    static void Free(void *p);
-    DICTNODE *Lookup(const char *name, const char *type);
-    DICTNODE *Lookup(unsigned int id, const char *type);
-    void Read(DICTNODE *n);
-    void Read(DICTNODE *n, void *p);
-    void *Load(DICTNODE *h);
-    void *Load(DICTNODE *h, void *p);
-    void *Lock(DICTNODE *h);
-    void Unlock(DICTNODE *h);
-    void Crypt(void *p, int length, unsigned short key);
-    static void RemoveMRU(CACHENODE *h);
-    int Size(DICTNODE*h) { return h->size; }
-    void FNAddFiles(fnlist_t *fnlist, const char *pattern);
-    void PrecacheSounds(void);
-    void PurgeCache(void);
-    void RemoveNode(DICTNODE* pNode);
-
-    DICTNODE *dict;
-    DICTNODE **indexName;
-    DICTNODE **indexId;
-    unsigned int buffSize;
-    unsigned int count;
-    int handle;
-    bool crypt;
-
-#if USE_QHEAP
-    static QHeap *heap;
-#endif
-    static CACHENODE purgeHead;
-};
-
-END_BLD_NS
+using Resource = FileSystem;
diff --git a/source/blood/src/sound.cpp b/source/blood/src/sound.cpp
index 6ae783013..0daeaaf40 100644
--- a/source/blood/src/sound.cpp
+++ b/source/blood/src/sound.cpp
@@ -36,7 +36,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 BEGIN_BLD_NS
 
-Resource gSoundRes;
+Resource& gSoundRes = fileSystem;
 
 int soundRates[13] = {
     11025,
@@ -97,7 +97,8 @@ int sndPlaySong(const char *songName, bool bLoop)
         }
         int nNewSongSize = hSong->Size();
         char *pNewSongPtr = (char *)Xaligned_alloc(16, nNewSongSize);
-        gSoundRes.Load(hSong, pNewSongPtr);
+		memcpy(pNewSongPtr, hSong->Lock(), nNewSongSize);
+		hSong->Unlock(true);
         MUSIC_SetVolume(mus_volume);
         int32_t retval = MUSIC_PlaySong(pNewSongPtr, nNewSongSize, bLoop);
 
@@ -352,7 +353,8 @@ void sndStartWavDisk(const char *pzFile, int nVolume, int nChannel)
     if (!hFile.isOpen())
         return;
     int nLength = hFile.GetLength();
-    char *pData = (char*)gSoundRes.Alloc(nLength);
+	char* pData = nullptr;
+	cacheAllocateBlock((intptr_t*)pData, nLength, nullptr);	// use this obsolete call to indicate that some work is needed here!
     if (!pData)
     {
         return;
@@ -374,14 +376,9 @@ void sndKillAllSounds(void)
         {
             if (pChannel->at4 & 2)
             {
-#if 0
-                free(pChannel->at5);
-#else
-                gSoundRes.Free(pChannel->at5);
-#endif
                 pChannel->at4 &= ~2;
             }
-            else
+            else // This 'else' needs to be removed once the file system is up (when cacheAllocateBlock gets replaced.)
             {
                 gSoundRes.Unlock(pChannel->at5);
             }
@@ -398,10 +395,9 @@ void sndProcess(void)
         {
             if (Channel[i].at4 & 2)
             {
-                gSoundRes.Free(Channel[i].at5);
                 Channel[i].at4 &= ~2;
             }
-            else
+            else // This 'else' needs to be removed once the file system is up (when cacheAllocateBlock gets replaced.)
             {
                 gSoundRes.Unlock(Channel[i].at5);
             }
diff --git a/source/blood/src/sound.h b/source/blood/src/sound.h
index bec256d34..79aa31245 100644
--- a/source/blood/src/sound.h
+++ b/source/blood/src/sound.h
@@ -59,6 +59,6 @@ void sndProcess(void);
 void sndTerm(void);
 void sndInit(void);
 
-extern Resource gSoundRes;
+extern Resource &gSoundRes;
 
 END_BLD_NS
diff --git a/source/blood/src/view.cpp b/source/blood/src/view.cpp
index da0dba82b..e96e1e693 100644
--- a/source/blood/src/view.cpp
+++ b/source/blood/src/view.cpp
@@ -1758,7 +1758,7 @@ void viewInit(void)
 
     DICTNODE *hLens = gSysRes.Lookup("LENS", "DAT");
     dassert(hLens != NULL);
-    dassert(gSysRes.Size(hLens) == kLensSize * kLensSize * sizeof(int));
+    dassert(hLens->Size() == kLensSize * kLensSize * sizeof(int));
 
     lensTable = (int*)gSysRes.Lock(hLens);
 #if B_BIG_ENDIAN == 1
diff --git a/source/common/filesystem/cache.cpp b/source/common/filesystem/cache.cpp
index 50df3eebb..f13c98196 100644
--- a/source/common/filesystem/cache.cpp
+++ b/source/common/filesystem/cache.cpp
@@ -123,16 +123,3 @@ void Resource::RemoveMRU(CACHENODE *h)
     h->next->prev = h->prev;
 }
 
-
-void Resource::PrecacheSounds(void)
-{
-    for (unsigned int i = 0; i < count; i++)
-    {
-        DICTNODE *pNode = &dict[i];
-        if ((!strcmp(pNode->type, "RAW") || !strcmp(pNode->type, "SFX")) && !pNode->ptr)
-        {
-            Load(pNode);
-            gameHandleEvents();
-        }
-    }
-}
diff --git a/source/common/filesystem/filesystem.cpp b/source/common/filesystem/filesystem.cpp
index ec24c32d5..123008126 100644
--- a/source/common/filesystem/filesystem.cpp
+++ b/source/common/filesystem/filesystem.cpp
@@ -55,19 +55,13 @@
 
 #define NULL_INDEX		(0xffffffff)
 
-struct FileSystem::FileRecord
-{
-	int			rfnum;
-	FResourceLump *lump;
-};
-
 // PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
 
 static void PrintLastError ();
 
 // PUBLIC DATA DEFINITIONS -------------------------------------------------
 
-FileSystem Files;
+FileSystem fileSystem;
 
 // CODE --------------------------------------------------------------------
 
@@ -866,21 +860,6 @@ void FileSystem::AddFromBuffer(const char* name, const char* type, char* data, i
 	AddLump(newlump);
 }
 
-//==========================================================================
-//
-// Read
-//
-// Reads lump into buffer (simulate Blood interface)
-//
-//==========================================================================
-
-void FileSystem::Read(FResourceLump *n, void *p)
-{
-	if (!n || !p) return;
-	auto r = n->Get();
-	memcpy(p, r, n->Size());
-}
-
 //==========================================================================
 //
 // Blood style lookup functions
@@ -986,7 +965,7 @@ FileData::~FileData ()
 
 FString::FString (ELumpNum lumpnum)
 {
-	auto lumpr = Files.OpenFileReader ((int)lumpnum);
+	auto lumpr = fileSystem.OpenFileReader ((int)lumpnum);
 	auto size = lumpr.GetLength ();
 	AllocBuffer (1 + size);
 	auto numread = lumpr.Read (&Chars[0], size);
@@ -995,7 +974,7 @@ FString::FString (ELumpNum lumpnum)
 	if (numread != size)
 	{
 		FStringf err("ConstructStringFromLump: Only read %ld of %ld bytes on lump %i (%s)\n",
-			numread, size, lumpnum, Files.GetFileName((int)lumpnum));
+			numread, size, lumpnum, fileSystem.GetFileName((int)lumpnum));
 	}
 }
 
diff --git a/source/common/filesystem/filesystem.h b/source/common/filesystem/filesystem.h
index c1cff5dc2..32a50f5b2 100644
--- a/source/common/filesystem/filesystem.h
+++ b/source/common/filesystem/filesystem.h
@@ -118,23 +118,18 @@ public:
 	static const void *Lock(FResourceLump *lump);
 	static void Unlock(FResourceLump *lump);
 	static const void *Load(FResourceLump *lump);
-	static void Read(FResourceLump *lump) { Load(lump); }
-	static void Read(FResourceLump *n, void *p);
 	FResourceLump *Lookup(const char *name, const char *type);
 	FResourceLump *Lookup(unsigned int id, const char *type);
-	void AddExternalResource(const char *name, const char *type, int id, int flags, const char *pzDirectory);
+	void AddExternalResource(const char *name, const char *type, int id, int flags = 0, const char *pzDirectory = nullptr);
 
 	FileReader OpenFileReader(int file);		// opens a reader that redirects to the containing file's one.
 	FileReader ReopenFileReader(int file, bool alwayscache = false);		// opens an independent reader.
 
 	int Iterate (const char *name, int *lastfile, ELookupMode lookupmode = ELookupMode::FullName);		// [RH] Find files with duplication
 
-	static uint32_t FileNameHash (const char *name);		// [RH] Create hash key from a given name
-
 	int FileLength (int file) const;
 	int GetFileOffset (int file);					// [RH] Returns offset of file in the wadfile
 	int GetFileFlags (int file);					// Return the flags for this file
-	void GetFileName (char *to, int file) const;	// [RH] Copies the file name to to using uppercopy
 	const char *GetFileName (int file) const;
 	FString GetFileFullPath (int file) const;		// [RH] Returns wad's name + file's full name
 	int GetFileContainer (int file) const;			// [RH] Returns filenum for a specified file
@@ -146,10 +141,18 @@ public:
 
 	int GetNumResourceFiles() const { return NumFiles; }
 	int GetNumEntries () const { return NumEntries; }
+	FResourceLump* GetFileAt(int lump) const
+	{
+		return FileInfo[lump].lump;
+	}
 
 protected:
 
-	struct FileRecord;
+	struct FileRecord
+	{
+		int			rfnum;
+		FResourceLump* lump;
+	};
 
 	TArray<FResourceFile *> Files;
 	TArray<FileRecord> FileInfo;
@@ -168,5 +171,5 @@ private:
 	void DeleteAll();
 };
 
-extern FileSystem Files;
+extern FileSystem fileSystem;
 
diff --git a/source/common/filesystem/resourcefile.cpp b/source/common/filesystem/resourcefile.cpp
index 0c9978f33..3b895be3d 100644
--- a/source/common/filesystem/resourcefile.cpp
+++ b/source/common/filesystem/resourcefile.cpp
@@ -37,6 +37,7 @@
 #include <zlib.h>
 #include "resourcefile.h"
 #include "name.h"
+#include "m_swap.h"
 
 extern FString LumpFilter;
 
@@ -155,6 +156,8 @@ void *FResourceLump::Lock()
 	else if (LumpSize > 0)
 	{
 		ValidateCache();
+		// NBlood has some endian conversion right in here which is extremely dangerous and needs to be handled differently.
+		// Fortunately Big Endian platforms are mostly irrelevant so this is something to be sorted out later (if ever)
 		RefCount++;
 	}
 	return Cache.Data();
diff --git a/source/common/filesystem/resourcefile.h b/source/common/filesystem/resourcefile.h
index 2ca9f6ad2..8dd3666bb 100644
--- a/source/common/filesystem/resourcefile.h
+++ b/source/common/filesystem/resourcefile.h
@@ -84,7 +84,7 @@ struct FResourceLump
 	unsigned Size() const{ return LumpSize; }
 	int LockCount() const { return RefCount; }
 	const char *ResName() const { return LumpName[BaseNameNoExtType]; }
-	const char *ResType() { return LumpName[ExtensionType]; }
+	const FName ResType() { return LumpName[ExtensionType]; }
 	const char *FullName() const { return LumpName[FullNameType]; }
 
 protected:
diff --git a/source/common/utility/namedef.h b/source/common/utility/namedef.h
index 6f243f0f2..69ab4364d 100644
--- a/source/common/utility/namedef.h
+++ b/source/common/utility/namedef.h
@@ -3,4 +3,7 @@ xx(None)
 xx(Null)
 xx(_)
 xx(Untranslated)
-
+xx(QAV)
+xx(SEQ)
+xx(SFX)
+xx(RAW)