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diff --git a/distrib/sdl-1.2.15/src/video/fbcon/3dfx_regs.h b/distrib/sdl-1.2.15/src/video/fbcon/3dfx_regs.h
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+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2012 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#ifndef _3DFX_REGS_H
+#define _3DFX_REGS_H
+
+/* This information comes from the public 3Dfx specs for the Voodoo 3000 */
+
+/* mapped_io register offsets */
+#define TDFX_STATUS 0x00
+
+#define INTCTRL (0x00100000 + 0x04)
+#define CLIP0MIN (0x00100000 + 0x08)
+#define CLIP0MAX (0x00100000 + 0x0c)
+#define DSTBASE (0x00100000 + 0x10)
+#define DSTFORMAT (0x00100000 + 0x14)
+#define SRCCOLORKEYMIN (0x00100000 + 0x18)
+#define SRCCOLORKEYMAX (0x00100000 + 0x1c)
+#define DSTCOLORKEYMIN (0x00100000 + 0x20)
+#define DSTCOLORKEYMAX (0x00100000 + 0x24)
+#define BRESERROR0 (0x00100000 + 0x28)
+#define BRESERROR1 (0x00100000 + 0x2c)
+#define ROP_2D (0x00100000 + 0x30)
+#define SRCBASE (0x00100000 + 0x34)
+#define COMMANDEXTRA_2D (0x00100000 + 0x38)
+#define PATTERN0 (0x00100000 + 0x44)
+#define PATTERN1 (0x00100000 + 0x48)
+#define CLIP1MIN (0x00100000 + 0x4c)
+#define CLIP1MAX (0x00100000 + 0x50)
+#define SRCFORMAT (0x00100000 + 0x54)
+#define SRCSIZE (0x00100000 + 0x58)
+#define SRCXY (0x00100000 + 0x5c)
+#define COLORBACK (0x00100000 + 0x60)
+#define COLORFORE (0x00100000 + 0x64)
+#define DSTSIZE (0x00100000 + 0x68)
+#define DSTXY (0x00100000 + 0x6c)
+#define COMMAND_2D (0x00100000 + 0x70)
+#define LAUNCH_2D (0x00100000 + 0x80)
+#define PATTERNBASE (0x00100000 + 0x100)
+
+#define COMMAND_3D (0x00200000 + 0x120)
+
+/* register bitfields (not all, only as needed) */
+
+#define BIT(x) (1UL << (x))
+
+#define COMMAND_2D_BITBLT 0x01
+#define COMMAND_2D_FILLRECT 0x05
+#define COMMAND_2D_LINE 0x06
+#define COMMAND_2D_POLYGON_FILL 0x08
+#define COMMAND_2D_INITIATE BIT(8)
+#define COMMAND_2D_REVERSELINE BIT(9)
+#define COMMAND_2D_STIPPLELINE BIT(12)
+#define COMMAND_2D_MONOCHROME_PATT BIT(13)
+#define COMMAND_2D_MONOCHROME_TRANSP BIT(16)
+
+#define COMMAND_3D_NOP 0x00
+
+#define STATUS_RETRACE BIT(6)
+#define STATUS_BUSY BIT(9)
+
+#endif /* _3DFX_REGS_H */
+