diff --git a/Doc/FuncStats.xlsx b/Doc/FuncStats.xlsx
index bfd49e4..b5acbe9 100644
Binary files a/Doc/FuncStats.xlsx and b/Doc/FuncStats.xlsx differ
diff --git a/SpaceCadetPinball/SpaceCadetPinball.cpp b/SpaceCadetPinball/SpaceCadetPinball.cpp
index ba9a1f9..e3107f1 100644
--- a/SpaceCadetPinball/SpaceCadetPinball.cpp
+++ b/SpaceCadetPinball/SpaceCadetPinball.cpp
@@ -22,6 +22,7 @@ int main()
 	char cmdLine[1]{};
 	//WinMain(pinball::hinst, 0, cmdLine, 10);
 
+	gdrv::init(0, 0);
 	auto dib = gdrv::DibCreate(8, 1, 1);
 	gdrv::DibSetUsage(dib, 0, 1);
 
diff --git a/SpaceCadetPinball/gdrv.cpp b/SpaceCadetPinball/gdrv.cpp
index 5d7ab17..d1915ad 100644
--- a/SpaceCadetPinball/gdrv.cpp
+++ b/SpaceCadetPinball/gdrv.cpp
@@ -1,69 +1,91 @@
 #include "pch.h"
 #include "gdrv.h"
 #include "memory.h"
+#include "winmain.h"
 
-HPALETTE gdrv::palette_handle=0;
+HPALETTE gdrv::palette_handle = nullptr;
+HINSTANCE gdrv::hinst;
+HWND gdrv::hwnd;
+LOGPALETTEx256 gdrv::current_palette{};
+int gdrv::sequence_handle;
+HDC gdrv::sequence_hdc;
+int gdrv::use_wing = 0;
+
+
+int gdrv::init(HINSTANCE hInst, HWND hWnd)
+{
+	hinst = hInst;
+	hwnd = hWnd;
+	if (!palette_handle)
+		palette_handle = CreatePalette((LOGPALETTE*)&current_palette);
+	return 0;
+}
+
+int gdrv::uninit()
+{
+	if (palette_handle)
+		DeleteObject(palette_handle);
+	return 0;
+}
 
 void gdrv::get_focus()
 {
 }
 
 
-gdrv_dib* gdrv::DibCreate(__int16 bpp, int width, int height)
+BITMAPINFO* gdrv::DibCreate(__int16 bpp, int width, int height)
 {
 	auto sizeBytes = height * ((width * bpp / 8 + 3) & 0xFFFFFFFC);
 	auto buf = GlobalAlloc(0x42u, sizeBytes + 1064);
-	auto dib = static_cast<gdrv_dib*>(GlobalLock(buf));
+	auto dib = static_cast<BITMAPINFO*>(GlobalLock(buf));
 
 	if (!dib)
 		return nullptr;
-	dib->BufferSize = sizeBytes;
-	dib->Width = width;
-	dib->PaletteOffset = 40;
-	dib->Height = height;
-	dib->Unknown3_1 = 1;
-	dib->Bpp = bpp;
-	dib->Unknown4 = 0;
-	dib->Unknown6 = 0;
-	dib->Unknown7 = 0;
-	dib->NumberOfColors = 0;
-	dib->Unknown9 = 0;
+	dib->bmiHeader.biSizeImage = sizeBytes;
+	dib->bmiHeader.biWidth = width;
+	dib->bmiHeader.biSize = 40;
+	dib->bmiHeader.biHeight = height;
+	dib->bmiHeader.biPlanes = 1;
+	dib->bmiHeader.biBitCount = bpp;
+	dib->bmiHeader.biCompression = 0;
+	dib->bmiHeader.biXPelsPerMeter = 0;
+	dib->bmiHeader.biYPelsPerMeter = 0;
+	dib->bmiHeader.biClrUsed = 0;
+	dib->bmiHeader.biClrImportant = 0;
 	if (bpp == 4)
 	{
-		dib->NumberOfColors = 16;
+		dib->bmiHeader.biClrUsed = 16;
 	}
 	else if (bpp == 8)
 	{
-		dib->NumberOfColors = 256;
+		dib->bmiHeader.biClrUsed = 256;
 	}
 
-	auto pltPtr = &dib->Palette0;
-	for (auto index = 0; index < dib->NumberOfColors / 16; ++index, pltPtr++)
+	int index = 0;
+	for (auto i = (int*)dib->bmiColors; index < static_cast<signed int>(dib->bmiHeader.biClrUsed) / 16; ++index)
 	{
-		*pltPtr = gdrv_dib_palette{
-			{0},
-			{0x800000},
-			{0x8000},
-			{8421376},
-			{128},
-			{8388736},
-			{32896},
-			{12632256},
-			{8421504},
-			{16711680},
-			{65280},
-			{16776960},
-			{255},
-			{16711935},
-			{0xFFFF},
-			{0xFFFFFF},
-		};
+		*i++ = 0;
+		*i++ = 0x800000;
+		*i++ = 0x8000;
+		*i++ = 8421376;
+		*i++ = 128;
+		*i++ = 8388736;
+		*i++ = 32896;
+		*i++ = 12632256;
+		*i++ = 8421504;
+		*i++ = 16711680;
+		*i++ = 65280;
+		*i++ = 16776960;
+		*i++ = 255;
+		*i++ = 16711935;
+		*i++ = 0xFFFF;
+		*i++ = 0xFFFFFF;
 	}
 	return dib;
 }
 
 
-void gdrv::DibSetUsage(gdrv_dib* dib, HPALETTE hpal, int someFlag)
+void gdrv::DibSetUsage(BITMAPINFO* dib, HPALETTE hpal, int someFlag)
 {
 	tagPALETTEENTRY pPalEntries[256]; // [esp+4h] [ebp-400h]
 
@@ -71,18 +93,18 @@ void gdrv::DibSetUsage(gdrv_dib* dib, HPALETTE hpal, int someFlag)
 		hpal = static_cast<HPALETTE>(GetStockObject(DEFAULT_PALETTE));
 	if (!dib)
 		return;
-	int numOfColors = dib->NumberOfColors;
+	int numOfColors = dib->bmiHeader.biClrUsed;
 	if (!numOfColors)
 	{
-		auto bpp = dib->Bpp;
+		auto bpp = dib->bmiHeader.biBitCount;
 		if (bpp <= 8u)
 			numOfColors = 1 << bpp;
 	}
-	if (numOfColors > 0 && (dib->Unknown4 != 3 || numOfColors == 3))
+	if (numOfColors > 0 && (dib->bmiHeader.biCompression != 3 || numOfColors == 3))
 	{
 		if (someFlag && someFlag <= 2)
 		{
-			auto pltPtr = (short*)((char*)dib + dib->PaletteOffset);
+			auto pltPtr = (short*)((char*)dib + dib->bmiHeader.biSize);
 			for (int i = 0; i < numOfColors; ++i)
 			{
 				*pltPtr++ = i;
@@ -91,7 +113,7 @@ void gdrv::DibSetUsage(gdrv_dib* dib, HPALETTE hpal, int someFlag)
 		else
 		{
 			assertm(false, "Entered bad code");
-			char* dibPtr = (char*)dib + dib->PaletteOffset;
+			char* dibPtr = (char*)dib + dib->bmiHeader.biSize;
 			if (numOfColors >= 256)
 				numOfColors = 256;
 			GetPaletteEntries(hpal, 0, numOfColors, pPalEntries);
@@ -115,7 +137,7 @@ void gdrv::DibSetUsage(gdrv_dib* dib, HPALETTE hpal, int someFlag)
 int gdrv::create_bitmap_dib(gdrv_bitmap8* bmp, int width, int height)
 {
 	char* bmpBufPtr; // ecx
-	gdrv_dib* dib = DibCreate(8, width, height);
+	auto dib = DibCreate(8, width, height);
 	DibSetUsage(dib, palette_handle, 1);
 
 	bmp->Dib = dib;
@@ -123,14 +145,14 @@ int gdrv::create_bitmap_dib(gdrv_bitmap8* bmp, int width, int height)
 	bmp->Stride = width;
 	if (width % 4)
 		bmp->Stride = 4 - width % 4 + width;
-	gdrv_dib* dib2 = bmp->Dib;
-	bmp->Height = height;
-	bmp->SomeByte = 2;
 
-	if (dib2->Unknown4 == 3)
-		bmpBufPtr = (char*)&dib2->Unknown3_1 + dib2->PaletteOffset;
+	bmp->Height = height;
+	bmp->BitmapType = BitmapType::DibBitmap;
+
+	if (dib->bmiHeader.biCompression == 3)
+		bmpBufPtr = (char*)&dib->bmiHeader.biPlanes + dib->bmiHeader.biSize;
 	else
-		bmpBufPtr = (char*)&dib2->PaletteOffset + 4 * dib2->NumberOfColors + dib2->PaletteOffset;
+		bmpBufPtr = (char*)&dib->bmiHeader.biSize + 4 * dib->bmiHeader.biClrUsed + dib->bmiHeader.biSize;
 	bmp->BmpBufPtr1 = bmpBufPtr;
 	bmp->BmpBufPtr2 = bmpBufPtr;
 	return 0;
@@ -150,7 +172,7 @@ int gdrv::create_raw_bitmap(gdrv_bitmap8* bmp, int width, int height, int flag)
 		bmp->Stride = width - width % 4 + 4;
 	unsigned int sizeInBytes = height * bmp->Stride;
 	bmp->Height = height;
-	bmp->SomeByte = 1;
+	bmp->BitmapType = BitmapType::RawBitmap;
 	char* buf = memory::allocate(sizeInBytes);
 	bmp->BmpBufPtr1 = buf;
 	if (!buf)
@@ -158,3 +180,212 @@ int gdrv::create_raw_bitmap(gdrv_bitmap8* bmp, int width, int height, int flag)
 	bmp->BmpBufPtr2 = buf;
 	return 0;
 }
+
+
+int gdrv::display_palette(PALETTEENTRY* plt)
+{
+	if (palette_handle)
+		DeleteObject(palette_handle);
+	palette_handle = CreatePalette((LOGPALETTE*)&current_palette);
+	auto windowHandle = GetDesktopWindow();
+	auto dc = winmain::_GetDC(windowHandle);
+	SetSystemPaletteUse(dc, 2u);
+	SetSystemPaletteUse(dc, 1u);
+	auto pltHandle = SelectPalette(dc, palette_handle, 0);
+	RealizePalette(dc);
+	SelectPalette(dc, pltHandle, 0);
+	GetSystemPaletteEntries(dc, 0, 0x100u, current_palette.palPalEntry);
+	for (int i = 0; i < 256; i++)
+	{
+		current_palette.palPalEntry[i].peFlags = 0;
+	}
+
+	auto pltSrc = &plt[10];
+	auto pltDst = &current_palette.palPalEntry[10];
+	for (int index = 236; index > 0; --index)
+	{
+		if (plt)
+		{
+			pltDst->peRed = pltSrc->peRed;
+			pltDst->peGreen = pltSrc->peGreen;
+			pltDst->peBlue = pltSrc->peBlue;
+		}
+		pltDst->peFlags = 4;
+		pltSrc++;
+		pltDst++;
+	}
+
+	if (!(GetDeviceCaps(dc, 38) & 0x100))
+	{
+		current_palette.palPalEntry[255].peBlue = -1;
+		current_palette.palPalEntry[255].peGreen = -1;
+		current_palette.palPalEntry[255].peRed = -1;
+	}
+
+	ResizePalette(palette_handle, 0x100u);
+	SetPaletteEntries(palette_handle, 0, 0x100u, current_palette.palPalEntry);
+	windowHandle = GetDesktopWindow();
+	ReleaseDC(windowHandle, dc);
+	return 0;
+}
+
+
+int gdrv::destroy_bitmap(gdrv_bitmap8* bmp)
+{
+	if (!bmp)
+		return -1;
+	if (bmp->BitmapType == BitmapType::RawBitmap)
+	{
+		memory::free(bmp->BmpBufPtr1);
+	}
+	else if (bmp->BitmapType == BitmapType::DibBitmap)
+	{
+		GlobalUnlock(GlobalHandle(bmp->Dib));
+		GlobalFree(GlobalHandle(bmp->Dib));
+	}
+	memset(bmp, 0, sizeof(gdrv_bitmap8));
+	return 0;
+}
+
+UINT gdrv::start_blit_sequence()
+{
+	HDC dc = winmain::_GetDC(hwnd);
+	sequence_handle = 0;
+	sequence_hdc = dc;
+	SelectPalette(dc, palette_handle, 0);
+	return RealizePalette(sequence_hdc);
+}
+
+void gdrv::blit_sequence(gdrv_bitmap8* bmp, int xSrc, int ySrcOff, int xDest, int yDest, int DestWidth, int DestHeight)
+{
+	if (!use_wing)
+		StretchDIBits(
+			sequence_hdc,
+			xDest,
+			yDest,
+			DestWidth,
+			DestHeight,
+			xSrc,
+			bmp->Height - ySrcOff - DestHeight,
+			DestWidth,
+			DestHeight,
+			bmp->BmpBufPtr1,
+			bmp->Dib,
+			1u,
+			SRCCOPY);
+}
+
+
+void gdrv::end_blit_sequence()
+{
+	ReleaseDC(hwnd, sequence_hdc);
+}
+
+void gdrv::blit(gdrv_bitmap8* bmp, int xSrc, int ySrcOff, int xDest, int yDest, int DestWidth, int DestHeight)
+{
+	HDC dc = winmain::_GetDC(hwnd);
+	if (dc)
+	{
+		SelectPalette(dc, palette_handle, 0);
+		RealizePalette(dc);
+		if (!use_wing)
+			StretchDIBits(
+				dc,
+				xDest,
+				yDest,
+				DestWidth,
+				DestHeight,
+				xSrc,
+				bmp->Height - ySrcOff - DestHeight,
+				DestWidth,
+				DestHeight,
+				bmp->BmpBufPtr1,
+				bmp->Dib,
+				1u,
+				SRCCOPY);
+		ReleaseDC(hwnd, dc);
+	}
+}
+
+void gdrv::blat(gdrv_bitmap8* bmp, int xDest, int yDest)
+{
+	HDC dc = winmain::_GetDC(hwnd);
+	SelectPalette(dc, palette_handle, 0);
+	RealizePalette(dc);
+	if (!use_wing)
+		StretchDIBits(
+			dc,
+			xDest,
+			yDest,
+			bmp->Width,
+			bmp->Height,
+			0,
+			0,
+			bmp->Width,
+			bmp->Height,
+			bmp->BmpBufPtr1,
+			bmp->Dib,
+			1u,
+			SRCCOPY);
+	ReleaseDC(hwnd, dc);
+}
+
+void gdrv::fill_bitmap(gdrv_bitmap8* bmp, int width, int height, int xOff, int yOff, char fillChar)
+{
+	int bmpHeight = bmp->Height;
+	if (bmpHeight < 0)
+		bmpHeight = -bmpHeight;
+	char* bmpPtr = &bmp->BmpBufPtr1[bmp->Width * (bmpHeight - height - yOff) + xOff];
+	if (height > 0)
+	{
+		do
+		{
+			if (width > 0)
+				memset(bmpPtr, fillChar, width);
+			bmpPtr += bmp->Stride;
+			--height;
+		}
+		while (height);
+	}
+}
+
+void gdrv::copy_bitmap(gdrv_bitmap8* dstBmp, int width, int height, int xOff, int yOff, gdrv_bitmap8* srcBmp,
+                       int srcXOff, int srcYOff)
+{
+	int dstHeight = abs(dstBmp->Height);
+	int srcHeight = abs(srcBmp->Height);
+	char* srcPtr = &srcBmp->BmpBufPtr1[srcBmp->Stride * (srcHeight - height - srcYOff) + srcXOff];
+	char* dstPtr = &dstBmp->BmpBufPtr1[dstBmp->Stride * (dstHeight - height - yOff) + xOff];
+
+	for (int y = height; y > 0; --y)
+	{
+		for (int x = width; x > 0; --x)
+			*dstPtr++ = *srcPtr++;
+
+		srcPtr += srcBmp->Stride - width;
+		dstPtr += dstBmp->Stride - width;
+	}
+}
+
+void gdrv::copy_bitmap_w_transparency(gdrv_bitmap8* dstBmp, int width, int height, int xOff, int yOff,
+                                      gdrv_bitmap8* srcBmp, int srcXOff, int srcYOff)
+{
+	int dstHeight = abs(dstBmp->Height);
+	int srcHeight = abs(srcBmp->Height);
+	char* srcPtr = &srcBmp->BmpBufPtr1[srcBmp->Stride * (srcHeight - height - srcYOff) + srcXOff];
+	char* dstPtr = &dstBmp->BmpBufPtr1[dstBmp->Stride * (dstHeight - height - yOff) + xOff];
+
+	for (int y = height; y > 0; --y)
+	{
+		for (int x = width; x > 0; --x)
+		{
+			if (*srcPtr)
+				*dstPtr = *srcPtr;
+			++srcPtr;
+			++dstPtr;
+		}
+
+		srcPtr += srcBmp->Stride - width;
+		dstPtr += dstBmp->Stride - width;
+	}
+}
diff --git a/SpaceCadetPinball/gdrv.h b/SpaceCadetPinball/gdrv.h
index 10312aa..697e84e 100644
--- a/SpaceCadetPinball/gdrv.h
+++ b/SpaceCadetPinball/gdrv.h
@@ -1,93 +1,74 @@
 #pragma once
 
-union tagPALETTEENTRY2
+enum class BitmapType : char
 {
-	unsigned __int32 PltInt;
-	tagPALETTEENTRY Plt;
+	None = 0,
+	RawBitmap = 1,
+	DibBitmap=2,
 };
 
-struct gdrv_dib_palette
-{
-	tagPALETTEENTRY2 Color0;
-	tagPALETTEENTRY2 Color1;
-	tagPALETTEENTRY2 Color2;
-	tagPALETTEENTRY2 Color3;
-	tagPALETTEENTRY2 Color4;
-	tagPALETTEENTRY2 Color5;
-	tagPALETTEENTRY2 Color6;
-	tagPALETTEENTRY2 Color7;
-	tagPALETTEENTRY2 Color8;
-	tagPALETTEENTRY2 Color9;
-	tagPALETTEENTRY2 Color10;
-	tagPALETTEENTRY2 Color11;
-	tagPALETTEENTRY2 Color12;
-	tagPALETTEENTRY2 Color13;
-	tagPALETTEENTRY2 Color14;
-	tagPALETTEENTRY2 Color15;
-};
-
-struct __declspec(align(4)) gdrv_dib
-{
-	int PaletteOffset;
-	int Width;
-	int Height;
-	__int16 Unknown3_1;
-	unsigned __int16 Bpp;
-	int Unknown4;
-	int BufferSize;
-	int Unknown6;
-	int Unknown7;
-	int NumberOfColors;
-	int Unknown9;
-	gdrv_dib_palette Palette0;
-	gdrv_dib_palette Palette1;
-	gdrv_dib_palette Palette2;
-	gdrv_dib_palette Palette3;
-	gdrv_dib_palette Palette4;
-	gdrv_dib_palette Palette5;
-	gdrv_dib_palette Palette6;
-	gdrv_dib_palette Palette7;
-	gdrv_dib_palette Palette8;
-	gdrv_dib_palette Palette9;
-	gdrv_dib_palette Palette10;
-	gdrv_dib_palette Palette11;
-	gdrv_dib_palette Palette12;
-	gdrv_dib_palette Palette13;
-	gdrv_dib_palette Palette14;
-	gdrv_dib_palette Palette15;
-	char BmpBuffer[1];
-};
 
 #pragma pack(push, 1)
 struct __declspec(align(1)) gdrv_bitmap8
 {
-	gdrv_dib* Dib;
+	BITMAPINFO* Dib;
 	char* BmpBufPtr2;
 	char* BmpBufPtr1;
 	int Width;
 	int Height;
 	int Stride;
-	char SomeByte;
+	BitmapType BitmapType;
 	int Color6;
 	int XPosition;
 	int YPosition;
 };
 #pragma pack(pop)
 
-static_assert(sizeof(tagPALETTEENTRY2) == 4, "Wrong size of tagPALETTEENTRY2");
-static_assert(sizeof(gdrv_dib_palette) == 4 * 16, "Wrong size of gdrv_dib_palette");
-static_assert(sizeof(gdrv_dib) == (10 * 4) + sizeof(gdrv_dib_palette) * 16 + 4, "Wrong size of gdrv_dib");
+
+struct LOGPALETTEx256
+{
+	WORD palVersion;
+	WORD palNumEntries;
+	PALETTEENTRY palPalEntry[256];
+
+	LOGPALETTEx256() : palVersion(0x300), palNumEntries(256), palPalEntry{}
+	{
+	}
+};
+
 static_assert(sizeof(gdrv_bitmap8) == 37, "Wrong size of gdrv_bitmap8");
 
 class gdrv
 {
 public:
 	static HPALETTE palette_handle;
+	static HINSTANCE hinst;
+	static HWND hwnd;
+	static LOGPALETTEx256 current_palette;
+	static int sequence_handle;
+	static HDC sequence_hdc;
+	static int use_wing;
+
+	static int init(HINSTANCE hInst, HWND hWnd);
+	static int uninit();
 	static void get_focus();
-	static gdrv_dib* DibCreate(__int16 bpp, int width, int height);
-	static void DibSetUsage(gdrv_dib* dib, HPALETTE hpal, int someFlag);
+	static BITMAPINFO* DibCreate(__int16 bpp, int width, int height);
+	static void DibSetUsage(BITMAPINFO* dib, HPALETTE hpal, int someFlag);
 	static int create_bitmap_dib(gdrv_bitmap8* bmp, int width, int height);
 	static int create_bitmap(gdrv_bitmap8* bmp, int width, int height);
 	static int create_raw_bitmap(gdrv_bitmap8* bmp, int width, int height, int flag);
+	static int destroy_bitmap(gdrv_bitmap8* bmp);
+	static int display_palette(PALETTEENTRY* plt);
+	static UINT start_blit_sequence();
+	static void blit_sequence(gdrv_bitmap8* bmp, int xSrc, int ySrcOff, int xDest, int yDest, int DestWidth,
+	                          int DestHeight);
+	static void end_blit_sequence();
+	static void blit(gdrv_bitmap8* bmp, int xSrc, int ySrcOff, int xDest, int yDest, int DestWidth, int DestHeight);
+	static void blat(gdrv_bitmap8* bmp, int xDest, int yDest);
+	static void fill_bitmap(gdrv_bitmap8* bmp, int width, int height, int xOff, int yOff, char fillChar);
+	static void copy_bitmap(gdrv_bitmap8* dstBmp, int width, int height, int xOff, int yOff, gdrv_bitmap8* srcBmp,
+	                        int srcXOff, int srcYOff);
+	static void copy_bitmap_w_transparency(gdrv_bitmap8* dstBmp, int width, int height, int xOff, int yOff,
+	                                       gdrv_bitmap8* srcBmp, int srcXOff, int srcYOff);
 private:
 };
diff --git a/SpaceCadetPinball/winmain.cpp b/SpaceCadetPinball/winmain.cpp
index f83ecef..13aec7b 100644
--- a/SpaceCadetPinball/winmain.cpp
+++ b/SpaceCadetPinball/winmain.cpp
@@ -160,6 +160,25 @@ int winmain::WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
 
 	while (true)
 	{
+		if(false)
+		{
+			auto plt = (PALETTEENTRY*)malloc(1024u);
+			auto gg = sizeof(LOGPALETTEx256);
+			auto pltPtr = &plt[10];
+			for (int i1 = 0, i2 = 0; i1 < 256 - 10; ++i1, i2 += 8)
+			{
+				unsigned char blue = i2, redGreen = i2;
+				if (i2 > 255)
+				{
+					blue = 255;
+					redGreen = i1;
+				}
+
+				*pltPtr++ = { redGreen, redGreen, blue };
+			}
+			gdrv::display_palette(plt);
+		}
+		
 		if (!ProcessWindowMessages() || bQuit)
 			break;
 		Sleep(8);
@@ -205,8 +224,8 @@ int winmain::ProcessWindowMessages()
 void winmain::memalloc_failure()
 {
 	/*midi_music_stop();
-	Sound_Close();
-	gdrv_uninit();*/
+	Sound_Close();*/
+	gdrv::uninit();
 	char* caption = pinball::get_rc_string(170, 0);
 	char* text = pinball::get_rc_string(179, 0);
 	MessageBoxA(nullptr, text, caption, 0x2030u);