/*	ROMEMDEV.c 	Copyright (C) 2007 Philip Cummins, 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.*/ /*	Read Only Memory EMulated DEVice 	Checks the header of the loaded ROM image, and then patches	the ROM image. 	This code descended from "ROM.c" in vMac by Philip Cummins. 	Support for "Twiggy" Mac by Mathew Hybler.*/ #ifndef AllFiles#include "SYSDEPNS.h"#include "MYOSGLUE.h"#include "ENDIANAC.h"#include "EMCONFIG.h"#include "GLOBGLUE.h"#endif #include "ROMEMDEV.h" #define UseSonyPatch \	((CurEmMd <= kEmMd_Classic) || (CurEmMd == kEmMd_II) \		|| (CurEmMd == kEmMd_IIx)) #ifndef UseLargeScreenHack#define UseLargeScreenHack 0#endif #if UseSonyPatchLOCALVAR const ui3b sony_driver[] = {/*	Replacement for .Sony driver	68k machine code, compiled from mydriver.a*/0x4F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0xEE, 0x00, 0x18, 0x00, 0x24, 0x00, 0x4A,0x00, 0x8A, 0x05, 0x2E, 0x53, 0x6F, 0x6E, 0x79,0x48, 0xE7, 0x00, 0xC0, 0x55, 0x4F, 0x3F, 0x3C,0x00, 0x01, 0x60, 0x30, 0x48, 0xE7, 0x00, 0xC0,0x55, 0x4F, 0x3F, 0x3C, 0x00, 0x02, 0x41, 0xFA,0x01, 0x84, 0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F,0x5C, 0x4F, 0x30, 0x1F, 0x4C, 0xDF, 0x03, 0x00,0x0C, 0x68, 0x00, 0x01, 0x00, 0x1A, 0x66, 0x1E,0x4E, 0x75, 0x48, 0xE7, 0x00, 0xC0, 0x55, 0x4F,0x3F, 0x3C, 0x00, 0x03, 0x41, 0xFA, 0x01, 0x5E,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0x5C, 0x4F,0x30, 0x1F, 0x4C, 0xDF, 0x03, 0x00, 0x32, 0x28,0x00, 0x06, 0x08, 0x01, 0x00, 0x09, 0x67, 0x0C,0x4A, 0x40, 0x6F, 0x02, 0x42, 0x40, 0x31, 0x40,0x00, 0x10, 0x4E, 0x75, 0x4A, 0x40, 0x6F, 0x04,0x42, 0x40, 0x4E, 0x75, 0x2F, 0x38, 0x08, 0xFC,0x4E, 0x75, 0x48, 0xE7, 0x00, 0xC0, 0x55, 0x4F,0x3F, 0x3C, 0x00, 0x04, 0x41, 0xFA, 0x01, 0x1E,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0x5C, 0x4F,0x30, 0x1F, 0x4C, 0xDF, 0x03, 0x00, 0x4E, 0x75,0x48, 0xE7, 0xE0, 0xC0, 0x20, 0x2F, 0x00, 0x14,0x59, 0x4F, 0x2F, 0x00, 0x55, 0x4F, 0x3F, 0x3C,0x00, 0x08, 0x41, 0xFA, 0x00, 0xF8, 0x2F, 0x18,0x20, 0x50, 0x20, 0x8F, 0x5C, 0x4F, 0x32, 0x1F,0x58, 0x4F, 0x20, 0x1F, 0x4A, 0x41, 0x66, 0x06,0x30, 0x7C, 0x00, 0x07, 0xA0, 0x2F, 0x4C, 0xDF,0x03, 0x07, 0x58, 0x4F, 0x4E, 0x73, 0x21, 0x40,0x00, 0x06, 0x43, 0xF8, 0x03, 0x08, 0x4E, 0xF9,0x00, 0x40, 0x0B, 0x20, 0x4E, 0x75, 0x48, 0xE7,0x1F, 0x10, 0x48, 0xE7, 0x00, 0xC0, 0x5D, 0x4F,0x3F, 0x3C, 0x00, 0x05, 0x41, 0xFA, 0x00, 0xB6,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0x5C, 0x4F,0x30, 0x1F, 0x2E, 0x1F, 0x0C, 0x40, 0xFF, 0xCF,0x66, 0x06, 0x42, 0x40, 0x60, 0x00, 0x00, 0x8E,0x4A, 0x40, 0x66, 0x00, 0x00, 0x88, 0x20, 0x07,0xA7, 0x1E, 0x26, 0x48, 0x20, 0x0B, 0x67, 0x00,0x00, 0x86, 0x9E, 0xFC, 0x00, 0x10, 0x2F, 0x0B,0x2F, 0x07, 0x55, 0x4F, 0x3F, 0x3C, 0x00, 0x06,0x41, 0xFA, 0x00, 0x7A, 0x2F, 0x18, 0x20, 0x50,0x20, 0x8F, 0x5C, 0x4F, 0x30, 0x1F, 0x50, 0x4F,0x2E, 0x1F, 0x76, 0x00, 0x36, 0x1F, 0x38, 0x1F,0x3C, 0x1F, 0x3A, 0x1F, 0x26, 0x5F, 0x4A, 0x40,0x66, 0x4A, 0x20, 0x0B, 0x67, 0x0E, 0x41, 0xFA,0xFF, 0x8C, 0x27, 0x48, 0x00, 0x06, 0x20, 0x4B,0xA0, 0x58, 0x60, 0x1A, 0x41, 0xFA, 0xFF, 0x70,0x30, 0x3C, 0xA0, 0x4E, 0xA0, 0x47, 0x60, 0x0E,0x20, 0x47, 0x30, 0x06, 0x48, 0x40, 0x30, 0x05,0xA0, 0x4E, 0xDE, 0x83, 0x52, 0x46, 0x51, 0xCC,0xFF, 0xF0, 0x48, 0x7A, 0xFF, 0x1C, 0x55, 0x4F,0x3F, 0x3C, 0x00, 0x07, 0x41, 0xFA, 0x00, 0x1E,0x2F, 0x18, 0x20, 0x50, 0x20, 0x8F, 0x5C, 0x4F,0x30, 0x1F, 0x58, 0x4F, 0x4C, 0xDF, 0x03, 0x00,0x4C, 0xDF, 0x08, 0xF8, 0x4E, 0x75, 0x30, 0x3C,0xFF, 0xFF, 0x60, 0xF0};#endif #if UseSonyPatchLOCALVAR const ui3b my_disk_icon[] = {	0x7F, 0xFF, 0xFF, 0xF0,	0x81, 0x00, 0x01, 0x08,	0x81, 0x00, 0x71, 0x04,	0x81, 0x00, 0x89, 0x02,	0x81, 0x00, 0x89, 0x01,	0x81, 0x00, 0x89, 0x01,	0x81, 0x00, 0x89, 0x01,	0x81, 0x00, 0x89, 0x01,	0x81, 0x00, 0x89, 0x01,	0x81, 0x00, 0x71, 0x01,	0x81, 0x00, 0x01, 0x01,	0x80, 0xFF, 0xFE, 0x01,	0x80, 0x00, 0x00, 0x01,	0x80, 0x00, 0x00, 0x01,	0x80, 0x00, 0x00, 0x01,	0x80, 0x00, 0x00, 0x01,	0x83, 0xFF, 0xFF, 0xC1,	0x84, 0x00, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x84, 0x06, 0x30, 0x21,	0x84, 0x06, 0x60, 0x21,	0x84, 0x06, 0xC0, 0x21,	0x84, 0x07, 0x80, 0x21,	0x84, 0x07, 0x00, 0x21,	0x84, 0x06, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x84, 0x00, 0x00, 0x21,	0x7F, 0xFF, 0xFF, 0xFE, 	/* mask */ 	0x3F, 0xFF, 0xFF, 0xF0,	0x7F, 0xFF, 0xFF, 0xF0,	0xFF, 0xFF, 0xFF, 0xFC,	0xFF, 0xFF, 0xFF, 0xFC,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0xFF, 0xFF, 0xFF, 0xFF,	0x7F, 0xFF, 0xFF, 0xFC,	0x3F, 0xFF, 0xFF, 0xFC, 	/* empty pascal string */	0x00, 0x00,};#endif #if CurEmMd <= kEmMd_Twig43#define Sony_DriverBase 0x1836#elif CurEmMd <= kEmMd_Twiggy#define Sony_DriverBase 0x16E4#elif CurEmMd <= kEmMd_128K#define Sony_DriverBase 0x1690#elif CurEmMd <= kEmMd_Plus#define Sony_DriverBase 0x17D30#elif CurEmMd <= kEmMd_Classic#define Sony_DriverBase 0x34680#elif (CurEmMd == kEmMd_II) || (CurEmMd == kEmMd_IIx)#define Sony_DriverBase 0x2D72C#endif #define kVidMem_Base 0x00540000 #if UseSonyPatchLOCALPROC Sony_Install(void){	ui3p pto = Sony_DriverBase + ROM; 	MyMoveBytes((anyp)sony_driver, (anyp)pto, sizeof(sony_driver));#if CurEmMd <= kEmMd_Twiggy	do_put_mem_long(pto + 0x14, 0x4469736B);		/* 'Disk' instead of 'Sony' */#if CurEmMd <= kEmMd_Twig43	do_put_mem_word(pto + 0xEA, 0x0C8A);#else	do_put_mem_word(pto + 0xEA, 0x0B74);#endif#endif 	pto += sizeof(sony_driver); 	do_put_mem_word(pto, kcom_callcheck);	pto += 2;	do_put_mem_word(pto, kExtnSony);	pto += 2;	do_put_mem_long(pto, kExtn_Block_Base); /* pokeaddr */	pto += 4; 	my_disk_icon_addr = (pto - ROM) + kROM_Base;	MyMoveBytes((anyp)my_disk_icon, (anyp)pto, sizeof(my_disk_icon));	pto += sizeof(my_disk_icon); #if UseLargeScreenHack	{		ui3p patchp = pto; #include "SCRNHACK.h"	}#endif 	(void) pto; /* avoid warning about unused */}#endif #ifndef DisableRomCheck#define DisableRomCheck 1#endif #ifndef DisableRamTest#define DisableRamTest 1#endif #ifdef CurAltHappyMac#include "HPMCHACK.h"#endif #ifdef ln2mtbLOCALPROC ROMscrambleForMTB(void){	si5r j;	ui3p p = ROM;	ui3p p2 = ROM + (1 << ln2mtb); 	for (j = kROM_Size / (1 << ln2mtb) / 2; --j >= 0; ) {		si5r i; 		for (i = (1 << ln2mtb); --i >= 0; ) {			ui3b t0 = *p;			ui3b t1 = *p2;			*p++ = t1;			*p2++ = t0;		} 		p += (1 << ln2mtb);		p2 += (1 << ln2mtb);	}}#endif GLOBALFUNC blnr ROM_Init(void){#if DisableRomCheck /* skip the rom checksum */#if CurEmMd <= kEmMd_Twig43	/* no checksum code */#elif CurEmMd <= kEmMd_Twiggy	do_put_mem_word(0x136 + ROM, 0x6004);#elif CurEmMd <= kEmMd_128K	do_put_mem_word(0xE2 + ROM, 0x6004);#elif CurEmMd <= kEmMd_Plus	do_put_mem_word(0xD7A + ROM, 0x6022);#elif CurEmMd <= kEmMd_Classic	do_put_mem_word(0x1C68 + ROM, 0x6008);#elif (CurEmMd == kEmMd_II) || (CurEmMd == kEmMd_IIx)	do_put_mem_word(0x2AB0 + ROM, 0x6008);#endif #endif /* DisableRomCheck */  #if DisableRamTest #if CurEmMd <= kEmMd_128K#elif CurEmMd <= kEmMd_Plus	do_put_mem_word(3752 + ROM, 0x4E71);		/* shorten the ram check read */	do_put_mem_word(3728 + ROM, 0x4E71);		/* shorten the ram check write */#elif CurEmMd <= kEmMd_Classic	do_put_mem_word(134 + ROM, 0x6002);	do_put_mem_word(286 + ROM, 0x6002);#elif (CurEmMd == kEmMd_II) || (CurEmMd == kEmMd_IIx)	do_put_mem_word(0xEE + ROM, 0x6002);	do_put_mem_word(0x1AA + ROM, 0x6002);#endif #endif /* DisableRamTest */ #ifdef CurAltHappyMac	PatchHappyMac();#endif 	/* do_put_mem_word(862 + ROM, 0x4E71); */ /* shorten set memory */ #if UseSonyPatch	Sony_Install();#endif #ifdef ln2mtb	ROMscrambleForMTB();#endif 	return trueblnr;}