init.c

底层驱动开发

/* $XFree86$ */
/* $XdotOrg$ */
/*
 * Mode initializing code (CRT1 section) for
 * for SiS 300/305/540/630/730,
 *     SiS 315/550/[M]650/651/[M]661[FGM]X/[M]74x[GX]/330/[M]76x[GX],
 *     XGI Volari V3XT/V5/V8, Z7
 * (Universal module for Linux kernel framebuffer and X.org/XFree86 4.x)
 *
 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
 *
 * If distributed as part of the Linux kernel, the following license terms
 * apply:
 *
 * * This program is free software; you can redistribute it and/or modify
 * * it under the terms of the GNU General Public License as published by
 * * the Free Software Foundation; either version 2 of the named License,
 * * or any later version.
 * *
 * * This program 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 General Public License for more details.
 * *
 * * You should have received a copy of the GNU General Public License
 * * along with this program; if not, write to the Free Software
 * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
 *
 * Otherwise, the following license terms apply:
 *
 * * Redistribution and use in source and binary forms, with or without
 * * modification, are permitted provided that the following conditions
 * * are met:
 * * 1) Redistributions of source code must retain the above copyright
 * *    notice, this list of conditions and the following disclaimer.
 * * 2) Redistributions in binary form must reproduce the above copyright
 * *    notice, this list of conditions and the following disclaimer in the
 * *    documentation and/or other materials provided with the distribution.
 * * 3) The name of the author may not be used to endorse or promote products
 * *    derived from this software without specific prior written permission.
 * *
 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Author: 	Thomas Winischhofer <[e-mail]>
 *
 * Formerly based on non-functional code-fragements for 300 series by SiS, Inc.
 * Used by permission.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "init.h"

#ifdef SIS300
#include "300vtbl.h"
#endif

#ifdef SIS315H
#include "310vtbl.h"
#endif

#if defined(ALLOC_PRAGMA)
#pragma alloc_text(PAGE,SiSSetMode)
#endif

/*********************************************/
/*         POINTER INITIALIZATION            */
/*********************************************/

#if defined(SIS300) || defined(SIS315H)
static void
InitCommonPointer(struct SiS_Private *SiS_Pr)
{
   SiS_Pr->SiS_SModeIDTable  = SiS_SModeIDTable;
   SiS_Pr->SiS_StResInfo     = SiS_StResInfo;
   SiS_Pr->SiS_ModeResInfo   = SiS_ModeResInfo;
   SiS_Pr->SiS_StandTable    = SiS_StandTable;

   SiS_Pr->SiS_NTSCTiming     = SiS_NTSCTiming;
   SiS_Pr->SiS_PALTiming      = SiS_PALTiming;
   SiS_Pr->SiS_HiTVSt1Timing  = SiS_HiTVSt1Timing;
   SiS_Pr->SiS_HiTVSt2Timing  = SiS_HiTVSt2Timing;

   SiS_Pr->SiS_HiTVExtTiming  = SiS_HiTVExtTiming;
   SiS_Pr->SiS_HiTVGroup3Data = SiS_HiTVGroup3Data;
   SiS_Pr->SiS_HiTVGroup3Simu = SiS_HiTVGroup3Simu;
#if 0
   SiS_Pr->SiS_HiTVTextTiming = SiS_HiTVTextTiming;
   SiS_Pr->SiS_HiTVGroup3Text = SiS_HiTVGroup3Text;
#endif

   SiS_Pr->SiS_StPALData   = SiS_StPALData;
   SiS_Pr->SiS_ExtPALData  = SiS_ExtPALData;
   SiS_Pr->SiS_StNTSCData  = SiS_StNTSCData;
   SiS_Pr->SiS_ExtNTSCData = SiS_ExtNTSCData;
   SiS_Pr->SiS_St1HiTVData = SiS_StHiTVData;
   SiS_Pr->SiS_St2HiTVData = SiS_St2HiTVData;
   SiS_Pr->SiS_ExtHiTVData = SiS_ExtHiTVData;
   SiS_Pr->SiS_St525iData  = SiS_StNTSCData;
   SiS_Pr->SiS_St525pData  = SiS_St525pData;
   SiS_Pr->SiS_St750pData  = SiS_St750pData;
   SiS_Pr->SiS_Ext525iData = SiS_ExtNTSCData;
   SiS_Pr->SiS_Ext525pData = SiS_ExtNTSCData;
   SiS_Pr->SiS_Ext750pData = SiS_Ext750pData;

   SiS_Pr->pSiS_OutputSelect = &SiS_OutputSelect;
   SiS_Pr->pSiS_SoftSetting  = &SiS_SoftSetting;

   SiS_Pr->SiS_LCD1280x720Data      = SiS_LCD1280x720Data;
   SiS_Pr->SiS_StLCD1280x768_2Data  = SiS_StLCD1280x768_2Data;
   SiS_Pr->SiS_ExtLCD1280x768_2Data = SiS_ExtLCD1280x768_2Data;
   SiS_Pr->SiS_LCD1280x800Data      = SiS_LCD1280x800Data;
   SiS_Pr->SiS_LCD1280x800_2Data    = SiS_LCD1280x800_2Data;
   SiS_Pr->SiS_LCD1280x854Data      = SiS_LCD1280x854Data;
   SiS_Pr->SiS_LCD1280x960Data      = SiS_LCD1280x960Data;
   SiS_Pr->SiS_StLCD1400x1050Data   = SiS_StLCD1400x1050Data;
   SiS_Pr->SiS_ExtLCD1400x1050Data  = SiS_ExtLCD1400x1050Data;
   SiS_Pr->SiS_LCD1680x1050Data     = SiS_LCD1680x1050Data;
   SiS_Pr->SiS_StLCD1600x1200Data   = SiS_StLCD1600x1200Data;
   SiS_Pr->SiS_ExtLCD1600x1200Data  = SiS_ExtLCD1600x1200Data;
   SiS_Pr->SiS_NoScaleData          = SiS_NoScaleData;

   SiS_Pr->SiS_LVDS320x240Data_1   = SiS_LVDS320x240Data_1;
   SiS_Pr->SiS_LVDS320x240Data_2   = SiS_LVDS320x240Data_2;
   SiS_Pr->SiS_LVDS640x480Data_1   = SiS_LVDS640x480Data_1;
   SiS_Pr->SiS_LVDS800x600Data_1   = SiS_LVDS800x600Data_1;
   SiS_Pr->SiS_LVDS1024x600Data_1  = SiS_LVDS1024x600Data_1;
   SiS_Pr->SiS_LVDS1024x768Data_1  = SiS_LVDS1024x768Data_1;

   SiS_Pr->SiS_LVDSCRT1320x240_1     = SiS_LVDSCRT1320x240_1;
   SiS_Pr->SiS_LVDSCRT1320x240_2     = SiS_LVDSCRT1320x240_2;
   SiS_Pr->SiS_LVDSCRT1320x240_2_H   = SiS_LVDSCRT1320x240_2_H;
   SiS_Pr->SiS_LVDSCRT1320x240_3     = SiS_LVDSCRT1320x240_3;
   SiS_Pr->SiS_LVDSCRT1320x240_3_H   = SiS_LVDSCRT1320x240_3_H;
   SiS_Pr->SiS_LVDSCRT1640x480_1     = SiS_LVDSCRT1640x480_1;
   SiS_Pr->SiS_LVDSCRT1640x480_1_H   = SiS_LVDSCRT1640x480_1_H;
#if 0
   SiS_Pr->SiS_LVDSCRT11024x600_1    = SiS_LVDSCRT11024x600_1;
   SiS_Pr->SiS_LVDSCRT11024x600_1_H  = SiS_LVDSCRT11024x600_1_H;
   SiS_Pr->SiS_LVDSCRT11024x600_2    = SiS_LVDSCRT11024x600_2;
   SiS_Pr->SiS_LVDSCRT11024x600_2_H  = SiS_LVDSCRT11024x600_2_H;
#endif

   SiS_Pr->SiS_CHTVUNTSCData = SiS_CHTVUNTSCData;
   SiS_Pr->SiS_CHTVONTSCData = SiS_CHTVONTSCData;

   SiS_Pr->SiS_PanelMinLVDS   = Panel_800x600;    /* lowest value LVDS/LCDA */
   SiS_Pr->SiS_PanelMin301    = Panel_1024x768;   /* lowest value 301 */
}
#endif

#ifdef SIS300
static void
InitTo300Pointer(struct SiS_Private *SiS_Pr)
{
   InitCommonPointer(SiS_Pr);

   SiS_Pr->SiS_VBModeIDTable = SiS300_VBModeIDTable;
   SiS_Pr->SiS_EModeIDTable  = SiS300_EModeIDTable;
   SiS_Pr->SiS_RefIndex      = SiS300_RefIndex;
   SiS_Pr->SiS_CRT1Table     = SiS300_CRT1Table;
   if(SiS_Pr->ChipType == SIS_300) {
      SiS_Pr->SiS_MCLKData_0 = SiS300_MCLKData_300; /* 300 */
   } else {
      SiS_Pr->SiS_MCLKData_0 = SiS300_MCLKData_630; /* 630, 730 */
   }
   SiS_Pr->SiS_VCLKData      = SiS300_VCLKData;
   SiS_Pr->SiS_VBVCLKData    = (struct SiS_VBVCLKData *)SiS300_VCLKData;

   SiS_Pr->SiS_SR15  = SiS300_SR15;

   SiS_Pr->SiS_PanelDelayTbl     = SiS300_PanelDelayTbl;
   SiS_Pr->SiS_PanelDelayTblLVDS = SiS300_PanelDelayTbl;

   SiS_Pr->SiS_ExtLCD1024x768Data   = SiS300_ExtLCD1024x768Data;
   SiS_Pr->SiS_St2LCD1024x768Data   = SiS300_St2LCD1024x768Data;
   SiS_Pr->SiS_ExtLCD1280x1024Data  = SiS300_ExtLCD1280x1024Data;
   SiS_Pr->SiS_St2LCD1280x1024Data  = SiS300_St2LCD1280x1024Data;

   SiS_Pr->SiS_CRT2Part2_1024x768_1  = SiS300_CRT2Part2_1024x768_1;
   SiS_Pr->SiS_CRT2Part2_1024x768_2  = SiS300_CRT2Part2_1024x768_2;
   SiS_Pr->SiS_CRT2Part2_1024x768_3  = SiS300_CRT2Part2_1024x768_3;

   SiS_Pr->SiS_CHTVUPALData  = SiS300_CHTVUPALData;
   SiS_Pr->SiS_CHTVOPALData  = SiS300_CHTVOPALData;
   SiS_Pr->SiS_CHTVUPALMData = SiS_CHTVUNTSCData;    /* not supported on 300 series */
   SiS_Pr->SiS_CHTVOPALMData = SiS_CHTVONTSCData;    /* not supported on 300 series */
   SiS_Pr->SiS_CHTVUPALNData = SiS300_CHTVUPALData;  /* not supported on 300 series */
   SiS_Pr->SiS_CHTVOPALNData = SiS300_CHTVOPALData;  /* not supported on 300 series */
   SiS_Pr->SiS_CHTVSOPALData = SiS300_CHTVSOPALData;

   SiS_Pr->SiS_LVDS848x480Data_1   = SiS300_LVDS848x480Data_1;
   SiS_Pr->SiS_LVDS848x480Data_2   = SiS300_LVDS848x480Data_2;
   SiS_Pr->SiS_LVDSBARCO1024Data_1 = SiS300_LVDSBARCO1024Data_1;
   SiS_Pr->SiS_LVDSBARCO1366Data_1 = SiS300_LVDSBARCO1366Data_1;
   SiS_Pr->SiS_LVDSBARCO1366Data_2 = SiS300_LVDSBARCO1366Data_2;

   SiS_Pr->SiS_PanelType04_1a = SiS300_PanelType04_1a;
   SiS_Pr->SiS_PanelType04_2a = SiS300_PanelType04_2a;
   SiS_Pr->SiS_PanelType04_1b = SiS300_PanelType04_1b;
   SiS_Pr->SiS_PanelType04_2b = SiS300_PanelType04_2b;

   SiS_Pr->SiS_CHTVCRT1UNTSC = SiS300_CHTVCRT1UNTSC;
   SiS_Pr->SiS_CHTVCRT1ONTSC = SiS300_CHTVCRT1ONTSC;
   SiS_Pr->SiS_CHTVCRT1UPAL  = SiS300_CHTVCRT1UPAL;
   SiS_Pr->SiS_CHTVCRT1OPAL  = SiS300_CHTVCRT1OPAL;
   SiS_Pr->SiS_CHTVCRT1SOPAL = SiS300_CHTVCRT1SOPAL;
   SiS_Pr->SiS_CHTVReg_UNTSC = SiS300_CHTVReg_UNTSC;
   SiS_Pr->SiS_CHTVReg_ONTSC = SiS300_CHTVReg_ONTSC;
   SiS_Pr->SiS_CHTVReg_UPAL  = SiS300_CHTVReg_UPAL;
   SiS_Pr->SiS_CHTVReg_OPAL  = SiS300_CHTVReg_OPAL;
   SiS_Pr->SiS_CHTVReg_UPALM = SiS300_CHTVReg_UNTSC;  /* not supported on 300 series */
   SiS_Pr->SiS_CHTVReg_OPALM = SiS300_CHTVReg_ONTSC;  /* not supported on 300 series */
   SiS_Pr->SiS_CHTVReg_UPALN = SiS300_CHTVReg_UPAL;   /* not supported on 300 series */
   SiS_Pr->SiS_CHTVReg_OPALN = SiS300_CHTVReg_OPAL;   /* not supported on 300 series */
   SiS_Pr->SiS_CHTVReg_SOPAL = SiS300_CHTVReg_SOPAL;
   SiS_Pr->SiS_CHTVVCLKUNTSC = SiS300_CHTVVCLKUNTSC;
   SiS_Pr->SiS_CHTVVCLKONTSC = SiS300_CHTVVCLKONTSC;
   SiS_Pr->SiS_CHTVVCLKUPAL  = SiS300_CHTVVCLKUPAL;
   SiS_Pr->SiS_CHTVVCLKOPAL  = SiS300_CHTVVCLKOPAL;
   SiS_Pr->SiS_CHTVVCLKUPALM = SiS300_CHTVVCLKUNTSC;  /* not supported on 300 series */
   SiS_Pr->SiS_CHTVVCLKOPALM = SiS300_CHTVVCLKONTSC;  /* not supported on 300 series */
   SiS_Pr->SiS_CHTVVCLKUPALN = SiS300_CHTVVCLKUPAL;   /* not supported on 300 series */
   SiS_Pr->SiS_CHTVVCLKOPALN = SiS300_CHTVVCLKOPAL;   /* not supported on 300 series */
   SiS_Pr->SiS_CHTVVCLKSOPAL = SiS300_CHTVVCLKSOPAL;
}
#endif

#ifdef SIS315H
static void
InitTo310Pointer(struct SiS_Private *SiS_Pr)
{
   InitCommonPointer(SiS_Pr);

   SiS_Pr->SiS_EModeIDTable  = SiS310_EModeIDTable;
   SiS_Pr->SiS_RefIndex      = SiS310_RefIndex;
   SiS_Pr->SiS_CRT1Table     = SiS310_CRT1Table;
   if(SiS_Pr->ChipType >= SIS_340) {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_340;  /* 340 + XGI */
   } else if(SiS_Pr->ChipType >= SIS_761) {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_761;  /* 761 - preliminary */
   } else if(SiS_Pr->ChipType >= SIS_760) {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_760;  /* 760 */
   } else if(SiS_Pr->ChipType >= SIS_661) {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_660;  /* 661/741 */
   } else if(SiS_Pr->ChipType == SIS_330) {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_330;  /* 330 */
   } else if(SiS_Pr->ChipType > SIS_315PRO) {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_650;  /* 550, 650, 740 */
   } else {
      SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_315;  /* 315 */
   }
   if(SiS_Pr->ChipType >= SIS_340) {
      SiS_Pr->SiS_MCLKData_1 = SiS310_MCLKData_1_340;
   } else {
      SiS_Pr->SiS_MCLKData_1 = SiS310_MCLKData_1;
   }
   SiS_Pr->SiS_VCLKData      = SiS310_VCLKData;
   SiS_Pr->SiS_VBVCLKData    = SiS310_VBVCLKData;

   SiS_Pr->SiS_SR15  = SiS310_SR15;

   SiS_Pr->SiS_PanelDelayTbl     = SiS310_PanelDelayTbl;
   SiS_Pr->SiS_PanelDelayTblLVDS = SiS310_PanelDelayTblLVDS;

   SiS_Pr->SiS_St2LCD1024x768Data   = SiS310_St2LCD1024x768Data;
   SiS_Pr->SiS_ExtLCD1024x768Data   = SiS310_ExtLCD1024x768Data;
   SiS_Pr->SiS_St2LCD1280x1024Data  = SiS310_St2LCD1280x1024Data;
   SiS_Pr->SiS_ExtLCD1280x1024Data  = SiS310_ExtLCD1280x1024Data;

   SiS_Pr->SiS_CRT2Part2_1024x768_1  = SiS310_CRT2Part2_1024x768_1;

   SiS_Pr->SiS_CHTVUPALData  = SiS310_CHTVUPALData;
   SiS_Pr->SiS_CHTVOPALData  = SiS310_CHTVOPALData;
   SiS_Pr->SiS_CHTVUPALMData = SiS310_CHTVUPALMData;
   SiS_Pr->SiS_CHTVOPALMData = SiS310_CHTVOPALMData;
   SiS_Pr->SiS_CHTVUPALNData = SiS310_CHTVUPALNData;
   SiS_Pr->SiS_CHTVOPALNData = SiS310_CHTVOPALNData;
   SiS_Pr->SiS_CHTVSOPALData = SiS310_CHTVSOPALData;

   SiS_Pr->SiS_CHTVCRT1UNTSC = SiS310_CHTVCRT1UNTSC;
   SiS_Pr->SiS_CHTVCRT1ONTSC = SiS310_CHTVCRT1ONTSC;
   SiS_Pr->SiS_CHTVCRT1UPAL  = SiS310_CHTVCRT1UPAL;
   SiS_Pr->SiS_CHTVCRT1OPAL  = SiS310_CHTVCRT1OPAL;
   SiS_Pr->SiS_CHTVCRT1SOPAL = SiS310_CHTVCRT1OPAL;

   SiS_Pr->SiS_CHTVReg_UNTSC = SiS310_CHTVReg_UNTSC;
   SiS_Pr->SiS_CHTVReg_ONTSC = SiS310_CHTVReg_ONTSC;
   SiS_Pr->SiS_CHTVReg_UPAL  = SiS310_CHTVReg_UPAL;
   SiS_Pr->SiS_CHTVReg_OPAL  = SiS310_CHTVReg_OPAL;
   SiS_Pr->SiS_CHTVReg_UPALM = SiS310_CHTVReg_UPALM;
   SiS_Pr->SiS_CHTVReg_OPALM = SiS310_CHTVReg_OPALM;
   SiS_Pr->SiS_CHTVReg_UPALN = SiS310_CHTVReg_UPALN;
   SiS_Pr->SiS_CHTVReg_OPALN = SiS310_CHTVReg_OPALN;
   SiS_Pr->SiS_CHTVReg_SOPAL = SiS310_CHTVReg_OPAL;

   SiS_Pr->SiS_CHTVVCLKUNTSC = SiS310_CHTVVCLKUNTSC;
   SiS_Pr->SiS_CHTVVCLKONTSC = SiS310_CHTVVCLKONTSC;
   SiS_Pr->SiS_CHTVVCLKUPAL  = SiS310_CHTVVCLKUPAL;
   SiS_Pr->SiS_CHTVVCLKOPAL  = SiS310_CHTVVCLKOPAL;
   SiS_Pr->SiS_CHTVVCLKUPALM = SiS310_CHTVVCLKUPALM;
   SiS_Pr->SiS_CHTVVCLKOPALM = SiS310_CHTVVCLKOPALM;
   SiS_Pr->SiS_CHTVVCLKUPALN = SiS310_CHTVVCLKUPALN;
   SiS_Pr->SiS_CHTVVCLKOPALN = SiS310_CHTVVCLKOPALN;
   SiS_Pr->SiS_CHTVVCLKSOPAL = SiS310_CHTVVCLKOPAL;
}
#endif

BOOLEAN
SiSInitPtr(struct SiS_Private *SiS_Pr)
{
   if(SiS_Pr->ChipType < SIS_315H) {
#ifdef SIS300
      InitTo300Pointer(SiS_Pr);
#else
      return FALSE;
#endif
   } else {
#ifdef SIS315H
      InitTo310Pointer(SiS_Pr);
#else
      return FALSE;
#endif
   }
   return TRUE;
}

/*********************************************/
/*            HELPER: Get ModeID             */
/*********************************************/

#ifndef SIS_XORG_XF86
static
#endif
unsigned short
SiS_GetModeID(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay,
		int Depth, BOOLEAN FSTN, int LCDwidth, int LCDheight)
{
   unsigned short ModeIndex = 0;

   switch(HDisplay)
   {
	case 320:
		if(VDisplay == 200) ModeIndex = ModeIndex_320x200[Depth];
		else if(VDisplay == 240) {
			if((VBFlags & CRT2_LCD) && (FSTN))
				ModeIndex = ModeIndex_320x240_FSTN[Depth];
			else
				ModeIndex = ModeIndex_320x240[Depth];
		}
		break;
	case 400:
		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 800) && (LCDwidth >= 600))) {
			if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
		}
		break;
	case 512:
		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 1024) && (LCDwidth >= 768))) {
			if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
		}
		break;
	case 640:
		if(VDisplay == 480)      ModeIndex = ModeIndex_640x480[Depth];
		else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
		break;
	case 720:
		if(VDisplay == 480)      ModeIndex = ModeIndex_720x480[Depth];
		else if(VDisplay == 576) ModeIndex = ModeIndex_720x576[Depth];
		break;
	case 768:
		if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
		break;
	case 800:
		if(VDisplay == 600)      ModeIndex = ModeIndex_800x600[Depth];
		else if(VDisplay == 480) ModeIndex = ModeIndex_800x480[Depth];
		break;
	case 848:
		if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
		break;
	case 856:
		if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
		break;
	case 960:
		if(VGAEngine == SIS_315_VGA) {
			if(VDisplay == 540)      ModeIndex = ModeIndex_960x540[Depth];
			else if(VDisplay == 600) ModeIndex = ModeIndex_960x600[Depth];
		}
		break;
	case 1024:
		if(VDisplay == 576)      ModeIndex = ModeIndex_1024x576[Depth];
		else if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
		else if(VGAEngine == SIS_300_VGA) {
			if(VDisplay == 600) ModeIndex = ModeIndex_1024x600[Depth];
		}
		break;
	case 1152:
		if(VDisplay == 864) ModeIndex = ModeIndex_1152x864[Depth];
		if(VGAEngine == SIS_300_VGA) {
			if(VDisplay == 768) ModeIndex = ModeIndex_1152x768[Depth];
		}
		break;
	case 1280:
		switch(VDisplay) {
			case 720:
				ModeIndex = ModeIndex_1280x720[Depth];
				break;
			case 768:
				if(VGAEngine == SIS_300_VGA) {
					ModeIndex = ModeIndex_300_1280x768[Depth];
				} else {
					ModeIndex = ModeIndex_310_1280x768[Depth];
				}
				break;
			case 800:
				if(VGAEngine == SIS_315_VGA) {
					ModeIndex = ModeIndex_1280x800[Depth];
				}
				break;
			case 854:
				if(VGAEngine == SIS_315_VGA) {
					ModeIndex = ModeIndex_1280x854[Depth];
				}
				break;
			case 960:
				ModeIndex = ModeIndex_1280x960[Depth];
				break;
			case 1024: