/*	VIDEMDEV.c 	Copyright (C) 2008 Paul C. Pratt 	You can redistribute this file and/or modify it under the terms	of version 2 of the GNU General Public License as published by	the Free Software Foundation.  You should have received a copy	of the license along with this file; see the file COPYING. 	This file 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	license for more details.*/ /*	VIDeo card EMulated DEVice 	Emulation of video card for Macintosh II. 	Written referring to:		Sample firmware code in "Designing Cards and Drivers		for Macintosh II and Macintosh SE", Apple Computer,		page 8-20. 		Basilisk II source code, especially slot_rom.cpp*/ #ifndef AllFiles#include "SYSDEPNS.h"#include "MYOSGLUE.h"#include "ENDIANAC.h"#include "EMCONFIG.h"#include "GLOBGLUE.h"#include "MINEM68K.h"#include "SONYEMDV.h"#endif #include "VIDEMDEV.h" /*	ReportAbnormalID unused 0x0A08 - 0x0AFF*/ #define VID_dolog (dbglog_HAVE && 0) LOCALVAR const ui3b VidDrvr_contents[] = {0x4C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x2A, 0x00, 0x00, 0x00, 0xE2, 0x00, 0xEC,0x00, 0xB6, 0x15, 0x2E, 0x44, 0x69, 0x73, 0x70,0x6C, 0x61, 0x79, 0x5F, 0x56, 0x69, 0x64, 0x65,0x6F, 0x5F, 0x53, 0x61, 0x6D, 0x70, 0x6C, 0x65,0x00, 0x00, 0x24, 0x48, 0x26, 0x49, 0x70, 0x04,0xA4, 0x40, 0x70, 0x04, 0xA7, 0x22, 0x66, 0x00,0x00, 0x50, 0x27, 0x48, 0x00, 0x14, 0xA0, 0x29,0x49, 0xFA, 0x00, 0x4A, 0x70, 0x10, 0xA7, 0x1E,0x66, 0x00, 0x00, 0x3E, 0x31, 0x7C, 0x00, 0x06,0x00, 0x04, 0x21, 0x4C, 0x00, 0x08, 0x21, 0x4B,0x00, 0x0C, 0x70, 0x00, 0x10, 0x2B, 0x00, 0x28,0xA0, 0x75, 0x66, 0x24, 0x22, 0x6B, 0x00, 0x14,0x22, 0x51, 0x22, 0x88, 0x3F, 0x3C, 0x00, 0x01,0x55, 0x4F, 0x3F, 0x3C, 0x00, 0x03, 0x41, 0xFA,0x00, 0x9C, 0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F,0xDE, 0xFC, 0x00, 0x0A, 0x70, 0x00, 0x60, 0x02,0x70, 0xE9, 0x4E, 0x75, 0x2F, 0x08, 0x55, 0x4F,0x3F, 0x3C, 0x00, 0x04, 0x41, 0xFA, 0x00, 0x7E,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0x50, 0x4F,0x20, 0x29, 0x00, 0x2A, 0xE1, 0x98, 0x02, 0x40,0x00, 0x0F, 0x20, 0x78, 0x0D, 0x28, 0x4E, 0x90,0x20, 0x5F, 0x70, 0x01, 0x4E, 0x75, 0x2F, 0x0B,0x26, 0x69, 0x00, 0x14, 0x42, 0x67, 0x55, 0x4F,0x3F, 0x3C, 0x00, 0x03, 0x41, 0xFA, 0x00, 0x4E,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0xDE, 0xFC,0x00, 0x0A, 0x20, 0x53, 0x20, 0x50, 0xA0, 0x76,0x20, 0x4B, 0xA0, 0x23, 0x70, 0x00, 0x26, 0x5F,0x4E, 0x75, 0x2F, 0x08, 0x55, 0x4F, 0x3F, 0x3C,0x00, 0x06, 0x60, 0x08, 0x2F, 0x08, 0x55, 0x4F,0x3F, 0x3C, 0x00, 0x05, 0x41, 0xFA, 0x00, 0x1E,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0x5C, 0x4F,0x30, 0x1F, 0x20, 0x5F, 0x08, 0x28, 0x00, 0x09,0x00, 0x06, 0x67, 0x02, 0x4E, 0x75, 0x20, 0x78,0x08, 0xFC, 0x4E, 0xD0}; LOCALPROC ChecksumSlotROM(void){	/* Calculate CRC */	/* assuming check sum field initialized to zero */	int i;	ui3p p = VidROM;	ui5b crc = 0; 	for (i = kVidROM_Size; --i >= 0; ) {		crc = ((crc << 1) | (crc >> 31)) + *p++;	}	do_put_mem_long(p - 12, crc);} LOCALVAR ui3p pPatch; LOCALPROC PatchAByte(ui3b v){	*pPatch++ = v;} LOCALPROC PatchAWord(ui4r v){	PatchAByte(v >> 8);	PatchAByte(v & 0x00FF);} LOCALPROC PatchALong(ui5r v){	PatchAWord(v >> 16);	PatchAWord(v & 0x0000FFFF);} #if 0LOCALPROC PatchAOSLstEntry0(ui3r Id, ui5r Offset){	PatchALong((Id << 24) | (Offset & 0x00FFFFFF));}#endif LOCALPROC PatchAOSLstEntry(ui3r Id, ui3p Offset){	PatchALong((Id << 24) | ((Offset - pPatch) & 0x00FFFFFF));} LOCALFUNC ui3p ReservePatchOSLstEntry(void){	ui3p v = pPatch;	pPatch += 4;	return v;} LOCALPROC PatchAReservedOSLstEntry(ui3p p, ui3r Id){	ui3p pPatchSave = pPatch;	pPatch = p;	PatchAOSLstEntry(Id, pPatchSave);	pPatch = pPatchSave;} LOCALPROC PatchADatLstEntry(ui3r Id, ui5r Data){	PatchALong((Id << 24) | (Data & 0x00FFFFFF));} LOCALPROC PatchAnEndOfLst(void){	PatchADatLstEntry(0xFF /* endOfList */, 0x00000000);} GLOBALFUNC blnr Vid_Init(void){	int i;	ui5r UsedSoFar; 	ui3p pAt_sRsrcDir;	ui3p pTo_sRsrc_Board;	ui3p pTo_BoardType;	ui3p pTo_BoardName;	ui3p pTo_VenderInfo;	ui3p pTo_VendorID;	ui3p pTo_RevLevel;	ui3p pTo_PartNum;	ui3p pTo_sRsrc_Video;	ui3p pTo_VideoType;	ui3p pTo_VideoName;	ui3p pTo_MinorBase;	ui3p pTo_MinorLength;#if 0	ui3p pTo_MajorBase;	ui3p pTo_MajorLength;#endif	ui3p pTo_VidDrvrDir;	ui3p pTo_sMacOS68020;	ui3p pTo_OneBitMode;	ui3p pTo_OneVidParams;#if 0 != vMacScreenDepth	ui3p pTo_ColorBitMode = nullpr;	ui3p pTo_ColorVidParams;#endif 	pPatch = VidROM; 	pAt_sRsrcDir = pPatch;	pTo_sRsrc_Board = ReservePatchOSLstEntry();	pTo_sRsrc_Video = ReservePatchOSLstEntry();	PatchAnEndOfLst(); 	PatchAReservedOSLstEntry(pTo_sRsrc_Board, 0x01 /* sRsrc_Board */);	pTo_BoardType = ReservePatchOSLstEntry();	pTo_BoardName = ReservePatchOSLstEntry();	PatchADatLstEntry(0x20 /* BoardId */, 0x0000764D);		/* 'vM', for Mini vMac */	pTo_VenderInfo = ReservePatchOSLstEntry();	PatchAnEndOfLst(); 	PatchAReservedOSLstEntry(pTo_BoardType, 0x01 /* sRsrcType */);	PatchAWord(0x0001);	PatchAWord(0x0000);	PatchAWord(0x0000);	PatchAWord(0x0000); 	PatchAReservedOSLstEntry(pTo_BoardName, 0x02 /* sRsrcName */);	/*		'Mini vMac video card' as ascii c string		(null terminated), and		zero padded to end aligned long.	*/	PatchALong(0x4D696E69);	PatchALong(0x20764D61);	PatchALong(0x63207669);	PatchALong(0x64656F20);	PatchALong(0x63617264);	PatchALong(0x00000000); 	PatchAReservedOSLstEntry(pTo_VenderInfo, 0x24 /* vendorInfo */); 	pTo_VendorID = ReservePatchOSLstEntry();	pTo_RevLevel = ReservePatchOSLstEntry();	pTo_PartNum = ReservePatchOSLstEntry();	PatchAnEndOfLst(); 	PatchAReservedOSLstEntry(pTo_VendorID, 0x01 /* vendorId */);	/*		'Paul C. Pratt' as ascii c string		(null terminated), and		zero padded to end aligned long.	*/	PatchALong(0x5061756C);	PatchALong(0x20432E20);	PatchALong(0x50726174);	PatchALong(0x74000000); 	PatchAReservedOSLstEntry(pTo_RevLevel, 0x03 /* revLevel */);	/*		'1.0' as ascii c string		(null terminated), and		zero padded to end aligned long.	*/	PatchALong(0x312E3000); 	PatchAReservedOSLstEntry(pTo_PartNum, 0x04 /* partNum */);	/*		'TFB-1' as ascii c string		(null terminated), and		zero padded to end aligned long.	*/	PatchALong(0x5446422D);	PatchALong(0x31000000); 	PatchAReservedOSLstEntry(pTo_sRsrc_Video, 0x80 /* sRsrc_Video */); 	pTo_VideoType = ReservePatchOSLstEntry();	pTo_VideoName = ReservePatchOSLstEntry();	pTo_VidDrvrDir = ReservePatchOSLstEntry();	PatchADatLstEntry(0x08 /* sRsrcHWDevId */, 0x00000001);	pTo_MinorBase = ReservePatchOSLstEntry();	pTo_MinorLength = ReservePatchOSLstEntry();#if 0	pTo_MajorBase = ReservePatchOSLstEntry();	pTo_MajorLength = ReservePatchOSLstEntry();#endif	pTo_OneBitMode = ReservePatchOSLstEntry();#if 0 != vMacScreenDepth	if (ColorModeWorks) {		pTo_ColorBitMode = ReservePatchOSLstEntry();	}#endif	PatchAnEndOfLst(); 	PatchAReservedOSLstEntry(pTo_VideoType, 0x01 /* sRsrcType */); 	PatchAWord(0x0003); /* catDisplay */	PatchAWord(0x0001); /* typVideo */	PatchAWord(0x0001); /* drSwApple */	PatchAWord(0x0001); /* drHwTFB */ 	PatchAReservedOSLstEntry(pTo_VideoName, 0x02 /* sRsrcName */);	/*		'Display_Video_Apple_TFB' as ascii c string		(null terminated), and		zero padded to end aligned long.	*/	PatchALong(0x44697370);	PatchALong(0x6C61795F);	PatchALong(0x56696465);	PatchALong(0x6F5F4170);	PatchALong(0x706C655F);	PatchALong(0x54464200); 	PatchAReservedOSLstEntry(pTo_MinorBase, 0x0A /* MinorBaseOS */);	PatchALong(0x00000000); 	PatchAReservedOSLstEntry(pTo_MinorLength, 0x0B /* MinorLength */);	PatchALong(kVidMemRAM_Size); #if 0	PatchAReservedOSLstEntry(pTo_MajorBase, 0x0C /* MinorBaseOS */);	PatchALong(0x00000000); 	PatchAReservedOSLstEntry(pTo_MajorLength, 0x0D /* MinorLength */);	PatchALong(kVidMemRAM_Size);#endif 	PatchAReservedOSLstEntry(pTo_VidDrvrDir, 0x04 /* sRsrcDrvrDir */);	pTo_sMacOS68020 = ReservePatchOSLstEntry();	PatchAnEndOfLst(); 	PatchAReservedOSLstEntry(pTo_sMacOS68020, 0x02 /* sMacOS68020 */); 	PatchALong(4 + sizeof(VidDrvr_contents) + 8);	MyMoveBytes((ui3p)VidDrvr_contents,		pPatch, sizeof(VidDrvr_contents));	pPatch += sizeof(VidDrvr_contents);	PatchAWord(kcom_callcheck);	PatchAWord(kExtnVideo);	PatchALong(kExtn_Block_Base); 	PatchAReservedOSLstEntry(pTo_OneBitMode, 0x80 /* oneBitMode */);	pTo_OneVidParams = ReservePatchOSLstEntry();	PatchADatLstEntry(0x03 /* mVidParams */, 0x00000001);	PatchADatLstEntry(0x04 /* mDevType */, 0x00000000);	PatchAnEndOfLst(); 	PatchAReservedOSLstEntry(pTo_OneVidParams, 0x01 /* mVidParams */);	PatchALong(0x0000002E); /* physical Block Size */	PatchALong(0x00000000); /* defmBaseOffset */	PatchAWord(vMacScreenWidth / 8);		/* (Bounds.R-Bounds.L)*PixelSize/8 */	PatchAWord(0x0000); /* Bounds.T */	PatchAWord(0x0000); /* Bounds.L */	PatchAWord(vMacScreenHeight); /* Bounds.B */	PatchAWord(vMacScreenWidth); /* Bounds.R */	PatchAWord(0x0000); /* bmVersion */	PatchAWord(0x0000); /* packType not used */	PatchALong(0x00000000); /* packSize not used */	PatchALong(0x00480000); /* bmHRes */	PatchALong(0x00480000); /* bmVRes */	PatchAWord(0x0000); /* bmPixelType */	PatchAWord(0x0001); /* bmPixelSize */	PatchAWord(0x0001); /* bmCmpCount */	PatchAWord(0x0001); /* bmCmpSize */	PatchALong(0x00000000); /* bmPlaneBytes */ #if 0 != vMacScreenDepth	if (ColorModeWorks) { 		PatchAReservedOSLstEntry(pTo_ColorBitMode, 0x81);		pTo_ColorVidParams = ReservePatchOSLstEntry();		PatchADatLstEntry(0x03 /* mVidParams */, 0x00000001);		PatchADatLstEntry(0x04 /* mDevType */,			(vMacScreenDepth < 4) ? 0x00000000 : 0x00000002);			/* 2 for direct devices, according to Basilisk II */		PatchAnEndOfLst(); 		PatchAReservedOSLstEntry(pTo_ColorVidParams, 0x01);		PatchALong(0x0000002E); /* physical Block Size */		PatchALong(0x00000000); /* defmBaseOffset */		PatchAWord(vMacScreenByteWidth);		PatchAWord(0x0000); /* Bounds.T */		PatchAWord(0x0000); /* Bounds.L */		PatchAWord(vMacScreenHeight); /* Bounds.B */		PatchAWord(vMacScreenWidth); /* Bounds.R */		PatchAWord(0x0000); /* bmVersion */		PatchAWord(0x0000); /* packType not used */		PatchALong(0x00000000); /* packSize not used */		PatchALong(0x00480000); /* bmHRes */		PatchALong(0x00480000); /* bmVRes */		PatchAWord((vMacScreenDepth < 4) ? 0x0000 : 0x0010);			/* bmPixelType */		PatchAWord(1 << vMacScreenDepth); /* bmPixelSize */		PatchAWord((vMacScreenDepth < 4) ? 0x0001 : 0x0003);			/* bmCmpCount */#if 4 == vMacScreenDepth		PatchAWord(0x0005); /* bmCmpSize */#elif 5 == vMacScreenDepth		PatchAWord(0x0008); /* bmCmpSize */#else		PatchAWord(1 << vMacScreenDepth); /* bmCmpSize */#endif		PatchALong(0x00000000); /* bmPlaneBytes */ 	}#endif 	UsedSoFar = (pPatch - VidROM) + 20;	if (UsedSoFar > kVidROM_Size) {		ReportAbnormalID(0x0A01, "kVidROM_Size to small");		return falseblnr;	} 	for (i = kVidROM_Size - UsedSoFar; --i >= 0; ) {		PatchAByte(0);	} 	pPatch = (kVidROM_Size - 20) + VidROM;	PatchALong((pAt_sRsrcDir - pPatch) & 0x00FFFFFF);	PatchALong(/* 0x0000041E */ kVidROM_Size);	PatchALong(0x00000000);	PatchAByte(0x01);	PatchAByte(0x01);	PatchALong(0x5A932BC7);	PatchAByte(0x00);	PatchAByte(0x0F); 	ChecksumSlotROM(); #if (0 != vMacScreenDepth) && (vMacScreenDepth < 4)	CLUT_reds[0] = 0xFFFF;	CLUT_greens[0] = 0xFFFF;	CLUT_blues[0] = 0xFFFF;	CLUT_reds[CLUT_size - 1] = 0;	CLUT_greens[CLUT_size - 1] = 0;	CLUT_blues[CLUT_size - 1] = 0;#endif 	return trueblnr;} IMPORTPROC Vid_VBLinterrupt_PulseNotify(void); GLOBALPROC Vid_Update(void){	if (! Vid_VBLintunenbl) {		Vid_VBLinterrupt = 0;		Vid_VBLinterrupt_PulseNotify();	}} LOCALFUNC ui4r Vid_GetMode(void){	return#if 0 != vMacScreenDepth		UseColorMode ? 129 :#endif		128;} LOCALFUNC tMacErr Vid_SetMode(ui4r v){#if 0 == vMacScreenDepth	UnusedParam(v);#else	if (UseColorMode != ((v != 128) && ColorModeWorks)) {		UseColorMode = ! UseColorMode;		ColorMappingChanged = trueblnr;	}#endif	return mnvm_noErr;} GLOBALFUNC ui4r Vid_Reset(void){#if 0 != vMacScreenDepth	UseColorMode = falseblnr;#endif	return 128;} #define kCmndVideoFeatures 1#define kCmndVideoGetIntEnbl 2#define kCmndVideoSetIntEnbl 3#define kCmndVideoClearInt 4#define kCmndVideoStatus 5#define kCmndVideoControl 6 #define CntrlParam_csCode 0x1A /* control/status code [word] */#define CntrlParam_csParam 0x1C /* operation-defined parameters */ #define VDPageInfo_csMode 0#define VDPageInfo_csData 2#define VDPageInfo_csPage 6#define VDPageInfo_csBaseAddr 8 #define VDSetEntryRecord_csTable 0#define VDSetEntryRecord_csStart 4#define VDSetEntryRecord_csCount 6 #define VDGammaRecord_csGTable 0 #define VidBaseAddr 0xF9900000	/* appears to be completely ignored */ LOCALVAR blnr UseGrayTones = falseblnr; LOCALPROC FillScreenWithGrayPattern(void){	int i;	int j;	ui5b *p1 = (ui5b *)VidMem; #if 0 != vMacScreenDepth	if (UseColorMode) {#if 1 == vMacScreenDepth		ui5b pat = 0xCCCCCCCC;

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