diff --git a/plugins/cdvdGigaherz/src/PlainIso.cpp b/plugins/cdvdGigaherz/src/PlainIso.cpp
new file mode 100644
index 0000000000..c12ae13408
--- /dev/null
+++ b/plugins/cdvdGigaherz/src/PlainIso.cpp
@@ -0,0 +1,214 @@
+#undef _WIN32_WINNT
+#define _WIN32_WINNT 0x0600
+#include "CDVD.h"
+#pragma warning(disable:4200)
+#pragma pack(1)
+#include <winioctl.h>
+#include "rosddk/ntddcdvd.h"
+#include "rosddk/ntddcdrm.h"
+#include "rosddk/ntddscsi.h"
+#pragma warning(default:4200)
+#include <stddef.h>
+
+#include "ReaderModules.h"
+#include "SectorConverters.h"
+
+#include <string>
+
+#define RETURN(v) {OpenOK=v; return;}
+
+s32 PlainIso::Reopen()
+{
+	if(fileSource)
+	{
+		delete fileSource;
+		fileSource = NULL;
+	}
+
+	OpenOK = false;
+
+	fileSource = new FileStream(fName);
+
+	tocCached = false;
+	mediaTypeCached = false;
+	discSizeCached = false;
+	layerBreakCached = false;
+
+	OpenOK=true;
+	return 0;
+}
+
+PlainIso::PlainIso(const char* fileName)
+{
+	fileSource=NULL;
+
+	strcpy_s(fName,256,fileName);
+
+	Reopen();
+}
+
+PlainIso::~PlainIso()
+{
+	if(fileSource && OpenOK)
+	{
+		delete fileSource;
+	}
+}
+
+s32 PlainIso::GetSectorCount()
+{
+	int plain_sectors = 0;
+
+	if(discSizeCached)
+		return discSize;
+
+	s64 length = fileSource->getLength();
+
+	discSizeCached = true;
+	discSize = (s32)(length / 2048);
+	return discSize;
+}
+
+s32 PlainIso::GetLayerBreakAddress()
+{
+	return 0;
+}
+
+s32 PlainIso::GetMediaType()
+{
+	if(mediaTypeCached)
+		return mediaType;
+
+	// assume single layer DVD, for now
+	mediaTypeCached = true;
+	mediaType = 0;
+	return mediaType;
+}
+
+#define MKDESCRIPTOR(n,ses,ctr,adr,pt,me,se,fe,tm,ts,tf) \
+	ftd->Descriptors[n].SessionNumber	= ses; \
+	ftd->Descriptors[n].Control			= ctr; \
+	ftd->Descriptors[n].Adr				= adr; \
+	ftd->Descriptors[n].Reserved1		= 0; \
+	ftd->Descriptors[n].Point			= pt; \
+	ftd->Descriptors[n].MsfExtra[0]		= me; \
+	ftd->Descriptors[n].MsfExtra[1]		= se; \
+	ftd->Descriptors[n].MsfExtra[2]		= fe; \
+	ftd->Descriptors[n].Zero			= 0; \
+	ftd->Descriptors[n].Msf[0]			= tm; \
+	ftd->Descriptors[n].Msf[1]			= ts; \
+	ftd->Descriptors[n].Msf[2]			= tf;
+
+#define MSF_TO_LBA(m,s,f) ((m*60+s)*75+f-150)
+#define LBA_TO_MSF(m,s,f,l) \
+	m = (l)/(75*60); \
+	s = (((l)/75)%60); \
+	f = ((l)%75);
+
+
+s32 PlainIso::ReadTOC(char *toc,int msize)
+{
+	DWORD size=0;
+
+	if(GetMediaType()>=0)
+		return -1;
+
+	if(!tocCached)
+	{
+		CDROM_TOC_FULL_TOC_DATA *ftd=(CDROM_TOC_FULL_TOC_DATA*)tocCacheData;
+
+		// Build basic TOC
+		int length = 6 * sizeof(ftd->Descriptors[0]) + 2;
+		ftd->Length[0] = length>>8;
+		ftd->Length[1] = length;
+		ftd->FirstCompleteSession=1;
+		ftd->LastCompleteSession=2;
+
+		int dm,ds,df;
+
+		LBA_TO_MSF(dm,ds,df,sector_count);
+
+		MKDESCRIPTOR(0,1,0x00,1,0xA0,0,0,0,1,0,0);
+		MKDESCRIPTOR(1,1,0x00,1,0xA1,0,0,0,1,0,0);
+		MKDESCRIPTOR(2,1,0x00,1,0xA2,0,0,0,dm,ds,df);
+		MKDESCRIPTOR(3,1,0x00,5,0xB0,0,0,0,0,0,0);
+		MKDESCRIPTOR(4,1,0x00,5,0xC0,0,0,0,0,0,0);
+		MKDESCRIPTOR(5,1,0x04,1,0x01,0,0,0,0,2,0);
+
+		tocCached = true;
+	}
+
+	memcpy(toc,tocCacheData,min(2048,msize));
+
+	return 0;
+}
+
+s32 PlainIso::ReadSectors2048(u32 sector, u32 count, char *buffer)
+{
+	if(!OpenOK) return -1;
+
+	fileSource->seek(sector*(u64)2048);
+
+	s32 bytes = count * 2048;
+	s32 size = fileSource->read((byte*)buffer,bytes);
+
+	if(size!=bytes)
+	{
+		return -1;
+	}
+
+	return 0;
+}
+
+
+s32 PlainIso::ReadSectors2352(u32 sector, u32 count, char *buffer)
+{
+	if(!OpenOK) return -1;
+
+	fileSource->seek(sector*(u64)2352);
+
+	for(uint i=0;i<count;i++)
+	{
+		s32 size = fileSource->read((byte*)sectorbuffer,2352);
+
+		if(size!=2352)
+		{
+			return -1;
+		}
+
+		Convert<2048,2352>(buffer+2048*i,sectorbuffer,sector+i);
+	}
+
+	return 0;
+}
+
+s32 PlainIso::DiscChanged()
+{
+	DWORD size=0;
+
+	if(!OpenOK) return -1;
+
+	return 0;
+}
+
+s32 PlainIso::IsOK()
+{
+	return OpenOK;
+}
+
+Reader* PlainIso::TryLoad(const char* fName)
+{
+	std::string fileName = fName;
+	std::string::size_type pos = fileName.find_last_of('.');
+
+	if(pos == std::string::npos) // no "." found, error.
+		return NULL;
+
+	std::string extension = fileName.substr(pos);
+
+	if((extension.compare(".iso")!=0)&&
+		(extension.compare(".ISO")!=0))	// assume valid
+		return NULL;
+
+	return new PlainIso(fName);
+}
\ No newline at end of file