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diff --git a/16/sod8086/id_vl.h b/16/sod8086/id_vl.h
new file mode 100755
index 00000000..9c1510cb
--- /dev/null
+++ b/16/sod8086/id_vl.h
@@ -0,0 +1,161 @@
+// ID_VL.H
+
+// wolf compatability
+
+#define MS_Quit	Quit
+
+void Quit (char *error);
+
+//===========================================================================
+
+
+#define SC_INDEX			0x3C4
+#define SC_RESET			0
+#define SC_CLOCK			1
+#define SC_MAPMASK			2
+#define SC_CHARMAP			3
+#define SC_MEMMODE			4
+
+#define CRTC_INDEX			0x3D4
+#define CRTC_H_TOTAL		0
+#define CRTC_H_DISPEND		1
+#define CRTC_H_BLANK		2
+#define CRTC_H_ENDBLANK		3
+#define CRTC_H_RETRACE		4
+#define CRTC_H_ENDRETRACE 	5
+#define CRTC_V_TOTAL		6
+#define CRTC_OVERFLOW		7
+#define CRTC_ROWSCAN		8
+#define CRTC_MAXSCANLINE 	9
+#define CRTC_CURSORSTART 	10
+#define CRTC_CURSOREND		11
+#define CRTC_STARTHIGH		12
+#define CRTC_STARTLOW		13
+#define CRTC_CURSORHIGH		14
+#define CRTC_CURSORLOW		15
+#define CRTC_V_RETRACE		16
+#define CRTC_V_ENDRETRACE 	17
+#define CRTC_V_DISPEND		18
+#define CRTC_OFFSET			19
+#define CRTC_UNDERLINE		20
+#define CRTC_V_BLANK		21
+#define CRTC_V_ENDBLANK		22
+#define CRTC_MODE			23
+#define CRTC_LINECOMPARE 	24
+
+
+#define GC_INDEX			0x3CE
+#define GC_SETRESET			0
+#define GC_ENABLESETRESET 	1
+#define GC_COLORCOMPARE		2
+#define GC_DATAROTATE		3
+#define GC_READMAP			4
+#define GC_MODE				5
+#define GC_MISCELLANEOUS 	6
+#define GC_COLORDONTCARE 	7
+#define GC_BITMASK			8
+
+#define ATR_INDEX			0x3c0
+#define ATR_MODE			16
+#define ATR_OVERSCAN		17
+#define ATR_COLORPLANEENABLE 18
+#define ATR_PELPAN			19
+#define ATR_COLORSELECT		20
+
+#define	STATUS_REGISTER_1    0x3da
+
+#define PEL_WRITE_ADR		0x3c8
+#define PEL_READ_ADR		0x3c7
+#define PEL_DATA			0x3c9
+
+
+//===========================================================================
+
+#define SCREENSEG		0xa000
+
+#define SCREENWIDTH		80			// default screen width in bytes
+#define MAXSCANLINES	200			// size of ylookup table
+
+#define CHARWIDTH		2
+#define TILEWIDTH		4
+
+//===========================================================================
+
+extern	unsigned	bufferofs;			// all drawing is reletive to this
+extern	unsigned	displayofs,pelpan;	// last setscreen coordinates
+
+extern	unsigned	screenseg;			// set to 0xa000 for asm convenience
+
+extern	unsigned	linewidth;
+extern	unsigned	ylookup[MAXSCANLINES];
+
+extern	boolean		screenfaded;
+extern	unsigned	bordercolor;
+
+//===========================================================================
+
+//
+// VGA hardware routines
+//
+
+#define VGAWRITEMODE(x) asm{\
+cli;\
+mov dx,GC_INDEX;\
+mov al,GC_MODE;\
+out dx,al;\
+inc dx;\
+in al,dx;\
+and al,252;\
+or al,x;\
+out dx,al;\
+sti;}
+
+#define VGAMAPMASK(x) asm{cli;mov dx,SC_INDEX;mov al,SC_MAPMASK;mov ah,x;out dx,ax;sti;}
+#define VGAREADMAP(x) asm{cli;mov dx,GC_INDEX;mov al,GC_READMAP;mov ah,x;out dx,ax;sti;}
+
+
+void VL_Startup (void);
+void VL_Shutdown (void);
+
+void VL_SetVGAPlane (void);
+void VL_SetTextMode (void);
+void VL_DePlaneVGA (void);
+void VL_SetVGAPlaneMode (void);
+void VL_ClearVideo (byte color);
+
+void VL_SetLineWidth (unsigned width);
+void VL_SetSplitScreen (int linenum);
+
+void VL_WaitVBL (int vbls);
+void VL_CrtcStart (int crtc);
+void VL_SetScreen (int crtc, int pelpan);
+
+void VL_FillPalette (int red, int green, int blue);
+void VL_SetColor	(int color, int red, int green, int blue);
+void VL_GetColor	(int color, int *red, int *green, int *blue);
+void VL_SetPalette (byte far *palette);
+void VL_GetPalette (byte far *palette);
+void VL_FadeOut (int start, int end, int red, int green, int blue, int steps);
+void VL_FadeIn (int start, int end, byte far *palette, int steps);
+void VL_ColorBorder (int color);
+
+void VL_Plot (int x, int y, int color);
+void VL_Hlin (unsigned x, unsigned y, unsigned width, unsigned color);
+void VL_Vlin (int x, int y, int height, int color);
+void VL_Bar (int x, int y, int width, int height, int color);
+
+void VL_MungePic (byte far *source, unsigned width, unsigned height);
+void VL_DrawPicBare (int x, int y, byte far *pic, int width, int height);
+void VL_MemToLatch (byte far *source, int width, int height, unsigned dest);
+void VL_ScreenToScreen (unsigned source, unsigned dest,int width, int height);
+void VL_MemToScreen (byte far *source, int width, int height, int x, int y);
+void VL_MaskedToScreen (byte far *source, int width, int height, int x, int y);
+
+void VL_DrawTile8String (char *str, char far *tile8ptr, int printx, int printy);
+void VL_DrawLatch8String (char *str, unsigned tile8ptr, int printx, int printy);
+void VL_SizeTile8String (char *str, int *width, int *height);
+void VL_DrawPropString (char *str, unsigned tile8ptr, int printx, int printy);
+void VL_SizePropString (char *str, int *width, int *height, char far *font);
+
+void VL_TestPaletteSet (void);
+