| 1 |
/* |
| 2 |
* rom_patches.cpp - ROM patches |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-1999 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#include <string.h> |
| 22 |
|
| 23 |
#include "sysdeps.h" |
| 24 |
#include "cpu_emulation.h" |
| 25 |
#include "main.h" |
| 26 |
#include "emul_op.h" |
| 27 |
#include "macos_util.h" |
| 28 |
#include "slot_rom.h" |
| 29 |
#include "sony.h" |
| 30 |
#include "disk.h" |
| 31 |
#include "cdrom.h" |
| 32 |
#include "video.h" |
| 33 |
#include "prefs.h" |
| 34 |
#include "rom_patches.h" |
| 35 |
|
| 36 |
#define DEBUG 0 |
| 37 |
#include "debug.h" |
| 38 |
|
| 39 |
|
| 40 |
// Breakpoint |
| 41 |
//#define M68K_BREAKPOINT 0x2310 // CritError |
| 42 |
//#define M68K_BREAKPOINT 0x1d10 // BootMe |
| 43 |
|
| 44 |
// Global variables |
| 45 |
uint32 UniversalInfo; // ROM offset of UniversalInfo |
| 46 |
uint32 PutScrapPatch; // Mac address of PutScrap() patch |
| 47 |
|
| 48 |
static uint32 sony_offset; // ROM offset of .Sony driver |
| 49 |
static uint32 serd_offset; // ROM offset of SERD resource (serial drivers) |
| 50 |
static uint32 microseconds_offset; // ROM offset of Microseconds() replacement routine |
| 51 |
static uint32 memory_dispatch_offset; // ROM offset of MemoryDispatch() replacement routine |
| 52 |
|
| 53 |
// Prototypes |
| 54 |
uint16 ROMVersion; |
| 55 |
|
| 56 |
|
| 57 |
/* |
| 58 |
* Search ROM for byte string, return ROM offset (or 0) |
| 59 |
*/ |
| 60 |
|
| 61 |
static uint32 find_rom_data(uint32 start, uint32 end, const uint8 *data, uint32 data_len) |
| 62 |
{ |
| 63 |
uint32 ofs = start; |
| 64 |
while (ofs < end) { |
| 65 |
if (!memcmp((void *)(ROMBaseHost + ofs), data, data_len)) |
| 66 |
return ofs; |
| 67 |
ofs++; |
| 68 |
} |
| 69 |
return 0; |
| 70 |
} |
| 71 |
|
| 72 |
|
| 73 |
/* |
| 74 |
* Search ROM resource by type/ID, return ROM offset of resource data |
| 75 |
*/ |
| 76 |
|
| 77 |
static uint32 rsrc_ptr = 0; |
| 78 |
|
| 79 |
static uint32 find_rom_resource(uint32 s_type, int16 s_id, bool cont = false) |
| 80 |
{ |
| 81 |
uint32 lp = ROMBaseMac + ReadMacInt32(ROMBaseMac + 0x1a); |
| 82 |
uint32 x = ReadMacInt32(lp); |
| 83 |
|
| 84 |
if (!cont) |
| 85 |
rsrc_ptr = x; |
| 86 |
|
| 87 |
for (;;) { |
| 88 |
lp = ROMBaseMac + rsrc_ptr; |
| 89 |
uint32 data = ReadMacInt32(lp + 12); |
| 90 |
uint32 type = ReadMacInt32(lp + 16); |
| 91 |
int16 id = ReadMacInt16(lp + 20); |
| 92 |
|
| 93 |
if (type == s_type && id == s_id) |
| 94 |
return data; |
| 95 |
|
| 96 |
rsrc_ptr = ReadMacInt32(lp + 8); |
| 97 |
if (!rsrc_ptr) |
| 98 |
break; |
| 99 |
} |
| 100 |
return 0; |
| 101 |
} |
| 102 |
|
| 103 |
|
| 104 |
/* |
| 105 |
* Search offset of A-Trap routine in ROM |
| 106 |
*/ |
| 107 |
|
| 108 |
static uint32 find_rom_trap(uint16 trap) |
| 109 |
{ |
| 110 |
uint8 *bp = (uint8 *)(ROMBaseHost + ReadMacInt32(ROMBaseMac + 0x22)); |
| 111 |
uint16 rom_trap = 0xa800; |
| 112 |
uint32 ofs = 0; |
| 113 |
|
| 114 |
again: |
| 115 |
for (int i=0; i<0x400; i++) { |
| 116 |
bool unimplemented = false; |
| 117 |
uint8 b = *bp++; |
| 118 |
if (b == 0x80) // Unimplemented trap |
| 119 |
unimplemented = true; |
| 120 |
else if (b == 0xff) { // Absolute address |
| 121 |
ofs = (bp[0] << 24) | (bp[1] << 16) | (bp[2] << 8) | bp[3]; |
| 122 |
bp += 4; |
| 123 |
} else if (b & 0x80) { // 1 byte offset |
| 124 |
int16 add = (b & 0x7f) << 1; |
| 125 |
if (!add) |
| 126 |
return 0; |
| 127 |
ofs += add; |
| 128 |
} else { // 2 byte offset |
| 129 |
int16 add = ((b << 8) | *bp++) << 1; |
| 130 |
if (!add) |
| 131 |
return 0; |
| 132 |
ofs += add; |
| 133 |
} |
| 134 |
if (rom_trap == trap) |
| 135 |
return unimplemented ? 0 : ofs; |
| 136 |
rom_trap++; |
| 137 |
} |
| 138 |
rom_trap = 0xa000; |
| 139 |
goto again; |
| 140 |
} |
| 141 |
|
| 142 |
|
| 143 |
/* |
| 144 |
* Driver stubs |
| 145 |
*/ |
| 146 |
|
| 147 |
static const uint8 sony_driver[] = { // Replacement for .Sony driver |
| 148 |
// Driver header |
| 149 |
SonyDriverFlags >> 8, SonyDriverFlags & 0xff, SonyDriverDelay >> 8, SonyDriverDelay & 0xff, 0x00, 0x00, 0x00, 0x00, |
| 150 |
0x00, 0x18, // Open() offset |
| 151 |
0x00, 0x1c, // Prime() offset |
| 152 |
0x00, 0x20, // Control() offset |
| 153 |
0x00, 0x2c, // Status() offset |
| 154 |
0x00, 0x52, // Close() offset |
| 155 |
0x05, 0x2e, 0x53, 0x6f, 0x6e, 0x79, // ".Sony" |
| 156 |
|
| 157 |
// Open() |
| 158 |
M68K_EMUL_OP_SONY_OPEN >> 8, M68K_EMUL_OP_SONY_OPEN & 0xff, |
| 159 |
0x4e, 0x75, // rts |
| 160 |
|
| 161 |
// Prime() |
| 162 |
M68K_EMUL_OP_SONY_PRIME >> 8, M68K_EMUL_OP_SONY_PRIME & 0xff, |
| 163 |
0x60, 0x0e, // bra IOReturn |
| 164 |
|
| 165 |
// Control() |
| 166 |
M68K_EMUL_OP_SONY_CONTROL >> 8, M68K_EMUL_OP_SONY_CONTROL & 0xff, |
| 167 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 168 |
0x66, 0x04, // bne IOReturn |
| 169 |
0x4e, 0x75, // rts |
| 170 |
|
| 171 |
// Status() |
| 172 |
M68K_EMUL_OP_SONY_STATUS >> 8, M68K_EMUL_OP_SONY_STATUS & 0xff, |
| 173 |
|
| 174 |
// IOReturn |
| 175 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 176 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 177 |
0x67, 0x0c, // beq 1 |
| 178 |
0x4a, 0x40, // tst.w d0 |
| 179 |
0x6f, 0x02, // ble 2 |
| 180 |
0x42, 0x40, // clr.w d0 |
| 181 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 182 |
0x4e, 0x75, // rts |
| 183 |
0x4a, 0x40, //1 tst.w d0 |
| 184 |
0x6f, 0x04, // ble 3 |
| 185 |
0x42, 0x40, // clr.w d0 |
| 186 |
0x4e, 0x75, // rts |
| 187 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(sp) |
| 188 |
0x4e, 0x75, // rts |
| 189 |
|
| 190 |
// Close() |
| 191 |
0x70, 0xe8, // moveq #-24,d0 |
| 192 |
0x4e, 0x75 // rts |
| 193 |
}; |
| 194 |
|
| 195 |
static const uint8 disk_driver[] = { // Generic disk driver |
| 196 |
// Driver header |
| 197 |
DiskDriverFlags >> 8, DiskDriverFlags & 0xff, DiskDriverDelay >> 8, DiskDriverDelay & 0xff, 0x00, 0x00, 0x00, 0x00, |
| 198 |
0x00, 0x18, // Open() offset |
| 199 |
0x00, 0x1c, // Prime() offset |
| 200 |
0x00, 0x20, // Control() offset |
| 201 |
0x00, 0x2c, // Status() offset |
| 202 |
0x00, 0x52, // Close() offset |
| 203 |
0x05, 0x2e, 0x44, 0x69, 0x73, 0x6b, // ".Disk" |
| 204 |
|
| 205 |
// Open() |
| 206 |
M68K_EMUL_OP_DISK_OPEN >> 8, M68K_EMUL_OP_DISK_OPEN & 0xff, |
| 207 |
0x4e, 0x75, // rts |
| 208 |
|
| 209 |
// Prime() |
| 210 |
M68K_EMUL_OP_DISK_PRIME >> 8, M68K_EMUL_OP_DISK_PRIME & 0xff, |
| 211 |
0x60, 0x0e, // bra IOReturn |
| 212 |
|
| 213 |
// Control() |
| 214 |
M68K_EMUL_OP_DISK_CONTROL >> 8, M68K_EMUL_OP_DISK_CONTROL & 0xff, |
| 215 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 216 |
0x66, 0x04, // bne IOReturn |
| 217 |
0x4e, 0x75, // rts |
| 218 |
|
| 219 |
// Status() |
| 220 |
M68K_EMUL_OP_DISK_STATUS >> 8, M68K_EMUL_OP_DISK_STATUS & 0xff, |
| 221 |
|
| 222 |
// IOReturn |
| 223 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 224 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 225 |
0x67, 0x0c, // beq 1 |
| 226 |
0x4a, 0x40, // tst.w d0 |
| 227 |
0x6f, 0x02, // ble 2 |
| 228 |
0x42, 0x40, // clr.w d0 |
| 229 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 230 |
0x4e, 0x75, // rts |
| 231 |
0x4a, 0x40, //1 tst.w d0 |
| 232 |
0x6f, 0x04, // ble 3 |
| 233 |
0x42, 0x40, // clr.w d0 |
| 234 |
0x4e, 0x75, // rts |
| 235 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(sp) |
| 236 |
0x4e, 0x75, // rts |
| 237 |
|
| 238 |
// Close() |
| 239 |
0x70, 0xe8, // moveq #-24,d0 |
| 240 |
0x4e, 0x75 // rts |
| 241 |
}; |
| 242 |
|
| 243 |
static const uint8 cdrom_driver[] = { // CD-ROM driver |
| 244 |
// Driver header |
| 245 |
CDROMDriverFlags >> 8, CDROMDriverFlags & 0xff, CDROMDriverDelay >> 8, CDROMDriverDelay & 0xff, 0x00, 0x00, 0x00, 0x00, |
| 246 |
0x00, 0x1c, // Open() offset |
| 247 |
0x00, 0x20, // Prime() offset |
| 248 |
0x00, 0x24, // Control() offset |
| 249 |
0x00, 0x30, // Status() offset |
| 250 |
0x00, 0x56, // Close() offset |
| 251 |
0x08, 0x2e, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x43, 0x44, 0x00, // ".AppleCD" |
| 252 |
|
| 253 |
// Open() |
| 254 |
M68K_EMUL_OP_CDROM_OPEN >> 8, M68K_EMUL_OP_CDROM_OPEN & 0xff, |
| 255 |
0x4e, 0x75, // rts |
| 256 |
|
| 257 |
// Prime() |
| 258 |
M68K_EMUL_OP_CDROM_PRIME >> 8, M68K_EMUL_OP_CDROM_PRIME & 0xff, |
| 259 |
0x60, 0x0e, // bra IOReturn |
| 260 |
|
| 261 |
// Control() |
| 262 |
M68K_EMUL_OP_CDROM_CONTROL >> 8, M68K_EMUL_OP_CDROM_CONTROL & 0xff, |
| 263 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 264 |
0x66, 0x04, // bne IOReturn |
| 265 |
0x4e, 0x75, // rts |
| 266 |
|
| 267 |
// Status() |
| 268 |
M68K_EMUL_OP_CDROM_STATUS >> 8, M68K_EMUL_OP_CDROM_STATUS & 0xff, |
| 269 |
|
| 270 |
// IOReturn |
| 271 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 272 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 273 |
0x67, 0x0c, // beq 1 |
| 274 |
0x4a, 0x40, // tst.w d0 |
| 275 |
0x6f, 0x02, // ble 2 |
| 276 |
0x42, 0x40, // clr.w d0 |
| 277 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 278 |
0x4e, 0x75, // rts |
| 279 |
0x4a, 0x40, //1 tst.w d0 |
| 280 |
0x6f, 0x04, // ble 3 |
| 281 |
0x42, 0x40, // clr.w d0 |
| 282 |
0x4e, 0x75, // rts |
| 283 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(sp) |
| 284 |
0x4e, 0x75, // rts |
| 285 |
|
| 286 |
// Close() |
| 287 |
0x70, 0xe8, // moveq #-24,d0 |
| 288 |
0x4e, 0x75 // rts |
| 289 |
}; |
| 290 |
|
| 291 |
static const uint8 ain_driver[] = { // .AIn driver header |
| 292 |
// Driver header |
| 293 |
0x4d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 294 |
0x00, 0x18, // Open() offset |
| 295 |
0x00, 0x1e, // Prime() offset |
| 296 |
0x00, 0x24, // Control() offset |
| 297 |
0x00, 0x32, // Status() offset |
| 298 |
0x00, 0x38, // Close() offset |
| 299 |
0x04, 0x2e, 0x41, 0x49, 0x6e, 0x09, // ".AIn",9 |
| 300 |
|
| 301 |
// Open() |
| 302 |
0x70, 0x00, // moveq #0,d0 |
| 303 |
M68K_EMUL_OP_SERIAL_OPEN >> 8, M68K_EMUL_OP_SERIAL_OPEN & 0xff, |
| 304 |
0x4e, 0x75, // rts |
| 305 |
|
| 306 |
// Prime() |
| 307 |
0x70, 0x00, // moveq #0,d0 |
| 308 |
M68K_EMUL_OP_SERIAL_PRIME >> 8, M68K_EMUL_OP_SERIAL_PRIME & 0xff, |
| 309 |
0x60, 0x1a, // bra IOReturn |
| 310 |
|
| 311 |
// Control() |
| 312 |
0x70, 0x00, // moveq #0,d0 |
| 313 |
M68K_EMUL_OP_SERIAL_CONTROL >> 8, M68K_EMUL_OP_SERIAL_CONTROL & 0xff, |
| 314 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 315 |
0x66, 0x0e, // bne IOReturn |
| 316 |
0x4e, 0x75, // rts |
| 317 |
|
| 318 |
// Status() |
| 319 |
0x70, 0x00, // moveq #0,d0 |
| 320 |
M68K_EMUL_OP_SERIAL_STATUS >> 8, M68K_EMUL_OP_SERIAL_STATUS & 0xff, |
| 321 |
0x60, 0x06, // bra IOReturn |
| 322 |
|
| 323 |
// Close() |
| 324 |
0x70, 0x00, // moveq #0,d0 |
| 325 |
M68K_EMUL_OP_SERIAL_CLOSE >> 8, M68K_EMUL_OP_SERIAL_CLOSE & 0xff, |
| 326 |
0x4e, 0x75, // rts |
| 327 |
|
| 328 |
// IOReturn |
| 329 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 330 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 331 |
0x67, 0x0c, // beq 1 |
| 332 |
0x4a, 0x40, // tst.w d0 |
| 333 |
0x6f, 0x02, // ble 2 |
| 334 |
0x42, 0x40, // clr.w d0 |
| 335 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 336 |
0x4e, 0x75, // rts |
| 337 |
0x4a, 0x40, //1 tst.w d0 |
| 338 |
0x6f, 0x04, // ble 3 |
| 339 |
0x42, 0x40, // clr.w d0 |
| 340 |
0x4e, 0x75, // rts |
| 341 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(a7) |
| 342 |
0x4e, 0x75, // rts |
| 343 |
}; |
| 344 |
|
| 345 |
static const uint8 aout_driver[] = { // .AOut driver header |
| 346 |
// Driver header |
| 347 |
0x4e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 348 |
0x00, 0x1a, // Open() offset |
| 349 |
0x00, 0x20, // Prime() offset |
| 350 |
0x00, 0x26, // Control() offset |
| 351 |
0x00, 0x34, // Status() offset |
| 352 |
0x00, 0x3a, // Close() offset |
| 353 |
0x05, 0x2e, 0x41, 0x4f, 0x75, 0x74, 0x09, 0x00, // ".AOut",9 |
| 354 |
|
| 355 |
// Open() |
| 356 |
0x70, 0x01, // moveq #1,d0 |
| 357 |
M68K_EMUL_OP_SERIAL_OPEN >> 8, M68K_EMUL_OP_SERIAL_OPEN & 0xff, |
| 358 |
0x4e, 0x75, // rts |
| 359 |
|
| 360 |
// Prime() |
| 361 |
0x70, 0x01, // moveq #1,d0 |
| 362 |
M68K_EMUL_OP_SERIAL_PRIME >> 8, M68K_EMUL_OP_SERIAL_PRIME & 0xff, |
| 363 |
0x60, 0x1a, // bra IOReturn |
| 364 |
|
| 365 |
// Control() |
| 366 |
0x70, 0x01, // moveq #1,d0 |
| 367 |
M68K_EMUL_OP_SERIAL_CONTROL >> 8, M68K_EMUL_OP_SERIAL_CONTROL & 0xff, |
| 368 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 369 |
0x66, 0x0e, // bne IOReturn |
| 370 |
0x4e, 0x75, // rts |
| 371 |
|
| 372 |
// Status() |
| 373 |
0x70, 0x01, // moveq #1,d0 |
| 374 |
M68K_EMUL_OP_SERIAL_STATUS >> 8, M68K_EMUL_OP_SERIAL_STATUS & 0xff, |
| 375 |
0x60, 0x06, // bra IOReturn |
| 376 |
|
| 377 |
// Close() |
| 378 |
0x70, 0x01, // moveq #1,d0 |
| 379 |
M68K_EMUL_OP_SERIAL_CLOSE >> 8, M68K_EMUL_OP_SERIAL_CLOSE & 0xff, |
| 380 |
0x4e, 0x75, // rts |
| 381 |
|
| 382 |
// IOReturn |
| 383 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 384 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 385 |
0x67, 0x0c, // beq 1 |
| 386 |
0x4a, 0x40, // tst.w d0 |
| 387 |
0x6f, 0x02, // ble 2 |
| 388 |
0x42, 0x40, // clr.w d0 |
| 389 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 390 |
0x4e, 0x75, // rts |
| 391 |
0x4a, 0x40, //1 tst.w d0 |
| 392 |
0x6f, 0x04, // ble 3 |
| 393 |
0x42, 0x40, // clr.w d0 |
| 394 |
0x4e, 0x75, // rts |
| 395 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(a7) |
| 396 |
0x4e, 0x75, // rts |
| 397 |
}; |
| 398 |
|
| 399 |
static const uint8 bin_driver[] = { // .BIn driver header |
| 400 |
// Driver header |
| 401 |
0x4d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 402 |
0x00, 0x18, // Open() offset |
| 403 |
0x00, 0x1e, // Prime() offset |
| 404 |
0x00, 0x24, // Control() offset |
| 405 |
0x00, 0x32, // Status() offset |
| 406 |
0x00, 0x38, // Close() offset |
| 407 |
0x04, 0x2e, 0x42, 0x49, 0x6e, 0x09, // ".BIn",9 |
| 408 |
|
| 409 |
// Open() |
| 410 |
0x70, 0x02, // moveq #2,d0 |
| 411 |
M68K_EMUL_OP_SERIAL_OPEN >> 8, M68K_EMUL_OP_SERIAL_OPEN & 0xff, |
| 412 |
0x4e, 0x75, // rts |
| 413 |
|
| 414 |
// Prime() |
| 415 |
0x70, 0x02, // moveq #2,d0 |
| 416 |
M68K_EMUL_OP_SERIAL_PRIME >> 8, M68K_EMUL_OP_SERIAL_PRIME & 0xff, |
| 417 |
0x60, 0x1a, // bra IOReturn |
| 418 |
|
| 419 |
// Control() |
| 420 |
0x70, 0x02, // moveq #2,d0 |
| 421 |
M68K_EMUL_OP_SERIAL_CONTROL >> 8, M68K_EMUL_OP_SERIAL_CONTROL & 0xff, |
| 422 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 423 |
0x66, 0x0e, // bne IOReturn |
| 424 |
0x4e, 0x75, // rts |
| 425 |
|
| 426 |
// Status() |
| 427 |
0x70, 0x02, // moveq #2,d0 |
| 428 |
M68K_EMUL_OP_SERIAL_STATUS >> 8, M68K_EMUL_OP_SERIAL_STATUS & 0xff, |
| 429 |
0x60, 0x06, // bra IOReturn |
| 430 |
|
| 431 |
// Close() |
| 432 |
0x70, 0x02, // moveq #2,d0 |
| 433 |
M68K_EMUL_OP_SERIAL_CLOSE >> 8, M68K_EMUL_OP_SERIAL_CLOSE & 0xff, |
| 434 |
0x4e, 0x75, // rts |
| 435 |
|
| 436 |
// IOReturn |
| 437 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 438 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 439 |
0x67, 0x0c, // beq 1 |
| 440 |
0x4a, 0x40, // tst.w d0 |
| 441 |
0x6f, 0x02, // ble 2 |
| 442 |
0x42, 0x40, // clr.w d0 |
| 443 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 444 |
0x4e, 0x75, // rts |
| 445 |
0x4a, 0x40, //1 tst.w d0 |
| 446 |
0x6f, 0x04, // ble 3 |
| 447 |
0x42, 0x40, // clr.w d0 |
| 448 |
0x4e, 0x75, // rts |
| 449 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(a7) |
| 450 |
0x4e, 0x75, // rts |
| 451 |
}; |
| 452 |
|
| 453 |
static const uint8 bout_driver[] = { // .BOut driver header |
| 454 |
// Driver header |
| 455 |
0x4e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 456 |
0x00, 0x1a, // Open() offset |
| 457 |
0x00, 0x20, // Prime() offset |
| 458 |
0x00, 0x26, // Control() offset |
| 459 |
0x00, 0x34, // Status() offset |
| 460 |
0x00, 0x3a, // Close() offset |
| 461 |
0x05, 0x2e, 0x42, 0x4f, 0x75, 0x74, 0x09, 0x00, // ".BOut",9 |
| 462 |
|
| 463 |
// Open() |
| 464 |
0x70, 0x03, // moveq #3,d0 |
| 465 |
M68K_EMUL_OP_SERIAL_OPEN >> 8, M68K_EMUL_OP_SERIAL_OPEN & 0xff, |
| 466 |
0x4e, 0x75, // rts |
| 467 |
|
| 468 |
// Prime() |
| 469 |
0x70, 0x03, // moveq #3,d0 |
| 470 |
M68K_EMUL_OP_SERIAL_PRIME >> 8, M68K_EMUL_OP_SERIAL_PRIME & 0xff, |
| 471 |
0x60, 0x1a, // bra IOReturn |
| 472 |
|
| 473 |
// Control() |
| 474 |
0x70, 0x03, // moveq #3,d0 |
| 475 |
M68K_EMUL_OP_SERIAL_CONTROL >> 8, M68K_EMUL_OP_SERIAL_CONTROL & 0xff, |
| 476 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 477 |
0x66, 0x0e, // bne IOReturn |
| 478 |
0x4e, 0x75, // rts |
| 479 |
|
| 480 |
// Status() |
| 481 |
0x70, 0x03, // moveq #3,d0 |
| 482 |
M68K_EMUL_OP_SERIAL_STATUS >> 8, M68K_EMUL_OP_SERIAL_STATUS & 0xff, |
| 483 |
0x60, 0x06, // bra IOReturn |
| 484 |
|
| 485 |
// Close() |
| 486 |
0x70, 0x03, // moveq #3,d0 |
| 487 |
M68K_EMUL_OP_SERIAL_CLOSE >> 8, M68K_EMUL_OP_SERIAL_CLOSE & 0xff, |
| 488 |
0x4e, 0x75, // rts |
| 489 |
|
| 490 |
// IOReturn |
| 491 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 492 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 493 |
0x67, 0x0c, // beq 1 |
| 494 |
0x4a, 0x40, // tst.w d0 |
| 495 |
0x6f, 0x02, // ble 2 |
| 496 |
0x42, 0x40, // clr.w d0 |
| 497 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 498 |
0x4e, 0x75, // rts |
| 499 |
0x4a, 0x40, //1 tst.w d0 |
| 500 |
0x6f, 0x04, // ble 3 |
| 501 |
0x42, 0x40, // clr.w d0 |
| 502 |
0x4e, 0x75, // rts |
| 503 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(a7) |
| 504 |
0x4e, 0x75, // rts |
| 505 |
}; |
| 506 |
|
| 507 |
|
| 508 |
/* |
| 509 |
* ADBOp() patch |
| 510 |
*/ |
| 511 |
|
| 512 |
static const uint8 adbop_patch[] = { // Call ADBOp() completion procedure |
| 513 |
// The completion procedure may call ADBOp() again! |
| 514 |
0x40, 0xe7, // move sr,-(sp) |
| 515 |
0x00, 0x7c, 0x07, 0x00, // ori #$0700,sr |
| 516 |
M68K_EMUL_OP_ADBOP >> 8, M68K_EMUL_OP_ADBOP & 0xff, |
| 517 |
0x48, 0xe7, 0x70, 0xf0, // movem.l d1-d3/a0-a3,-(sp) |
| 518 |
0x26, 0x48, // move.l a0,a3 |
| 519 |
0x4a, 0xab, 0x00, 0x04, // tst.l 4(a3) |
| 520 |
0x67, 0x00, 0x00, 0x18, // beq 1 |
| 521 |
0x20, 0x53, // move.l (a3),a0 |
| 522 |
0x22, 0x6b, 0x00, 0x04, // move.l 4(a3),a1 |
| 523 |
0x24, 0x6b, 0x00, 0x08, // move.l 8(a3),a2 |
| 524 |
0x26, 0x78, 0x0c, 0xf8, // move.l $cf8,a3 |
| 525 |
0x4e, 0x91, // jsr (a1) |
| 526 |
0x70, 0x00, // moveq #0,d0 |
| 527 |
0x60, 0x00, 0x00, 0x04, // bra 2 |
| 528 |
0x70, 0xff, //1 moveq #-1,d0 |
| 529 |
0x4c, 0xdf, 0x0f, 0x0e, //2 movem.l (sp)+,d1-d3/a0-a3 |
| 530 |
0x46, 0xdf, // move (sp)+,sr |
| 531 |
0x4e, 0x75 // rts |
| 532 |
}; |
| 533 |
|
| 534 |
|
| 535 |
/* |
| 536 |
* Install .Sony, disk and CD-ROM drivers |
| 537 |
*/ |
| 538 |
|
| 539 |
void InstallDrivers(uint32 pb) |
| 540 |
{ |
| 541 |
D(bug("InstallDrivers\n")); |
| 542 |
M68kRegisters r; |
| 543 |
|
| 544 |
// Install Microseconds() replacement routine |
| 545 |
r.a[0] = ROMBaseMac + microseconds_offset; |
| 546 |
r.d[0] = 0xa093; |
| 547 |
Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
| 548 |
|
| 549 |
// Install disk driver |
| 550 |
r.a[0] = ROMBaseMac + sony_offset + 0x100; |
| 551 |
r.d[0] = (uint32)DiskRefNum; |
| 552 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 553 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~DiskRefNum * 4); // Get driver handle from Unit Table |
| 554 |
Execute68kTrap(0xa029, &r); // HLock() |
| 555 |
uint32 dce = ReadMacInt32(r.a[0]); |
| 556 |
WriteMacInt32(dce + dCtlDriver, ROMBaseMac + sony_offset + 0x100); |
| 557 |
WriteMacInt16(dce + dCtlFlags, DiskDriverFlags); |
| 558 |
WriteMacInt16(dce + dCtlDelay, DiskDriverDelay); |
| 559 |
|
| 560 |
// Open disk driver |
| 561 |
WriteMacInt32(pb + ioNamePtr, ROMBaseMac + sony_offset + 0x112); |
| 562 |
r.a[0] = pb; |
| 563 |
Execute68kTrap(0xa000, &r); // Open() |
| 564 |
|
| 565 |
// Install CD-ROM driver unless nocdrom option given |
| 566 |
if (!PrefsFindBool("nocdrom")) { |
| 567 |
|
| 568 |
// Install CD-ROM driver |
| 569 |
r.a[0] = ROMBaseMac + sony_offset + 0x200; |
| 570 |
r.d[0] = (uint32)CDROMRefNum; |
| 571 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 572 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~CDROMRefNum * 4); // Get driver handle from Unit Table |
| 573 |
Execute68kTrap(0xa029, &r); // HLock() |
| 574 |
dce = ReadMacInt32(r.a[0]); |
| 575 |
WriteMacInt32(dce + dCtlDriver, ROMBaseMac + sony_offset + 0x200); |
| 576 |
WriteMacInt16(dce + dCtlFlags, CDROMDriverFlags); |
| 577 |
WriteMacInt16(dce + dCtlDelay, CDROMDriverDelay); |
| 578 |
|
| 579 |
// Open CD-ROM driver |
| 580 |
WriteMacInt32(pb + ioNamePtr, ROMBaseMac + sony_offset + 0x212); |
| 581 |
r.a[0] = pb; |
| 582 |
Execute68kTrap(0xa000, &r); // Open() |
| 583 |
} |
| 584 |
} |
| 585 |
|
| 586 |
|
| 587 |
/* |
| 588 |
* Install serial drivers |
| 589 |
*/ |
| 590 |
|
| 591 |
void InstallSERD(void) |
| 592 |
{ |
| 593 |
D(bug("InstallSERD\n")); |
| 594 |
|
| 595 |
// All drivers are inside the SERD resource |
| 596 |
M68kRegisters r; |
| 597 |
|
| 598 |
// Install .AIn driver |
| 599 |
r.d[0] = (uint32)-6; |
| 600 |
r.a[0] = ROMBaseMac + serd_offset + 0x100; |
| 601 |
Execute68kTrap(0xa53d, &r); // DrvrInstallRsrvMem() |
| 602 |
Execute68kTrap(0xa029, &r); // HLock() |
| 603 |
uint32 drvr_ptr = ReadMacInt32(r.a[0]); |
| 604 |
WriteMacInt32(drvr_ptr + dCtlDriver, ROMBaseMac + serd_offset + 0x100); // Pointer to driver header |
| 605 |
WriteMacInt16(drvr_ptr + dCtlFlags, (ain_driver[0] << 8) + ain_driver[1]); // Driver flags |
| 606 |
WriteMacInt16(drvr_ptr + dCtlQHdr + qFlags, 9); // Version number |
| 607 |
|
| 608 |
// Install .AOut driver |
| 609 |
r.d[0] = (uint32)-7; |
| 610 |
r.a[0] = ROMBaseMac + serd_offset + 0x200; |
| 611 |
Execute68kTrap(0xa53d, &r); // DrvrInstallRsrvMem() |
| 612 |
Execute68kTrap(0xa029, &r); // HLock() |
| 613 |
drvr_ptr = ReadMacInt32(r.a[0]); |
| 614 |
WriteMacInt32(drvr_ptr + dCtlDriver, ROMBaseMac + serd_offset + 0x200); // Pointer to driver header |
| 615 |
WriteMacInt16(drvr_ptr + dCtlFlags, (aout_driver[0] << 8) + aout_driver[1]); // Driver flags |
| 616 |
WriteMacInt16(drvr_ptr + dCtlQHdr + qFlags, 9); // Version number |
| 617 |
|
| 618 |
// Install .BIn driver |
| 619 |
r.d[0] = (uint32)-8; |
| 620 |
r.a[0] = ROMBaseMac + serd_offset + 0x300; |
| 621 |
Execute68kTrap(0xa53d, &r); // DrvrInstallRsrvMem() |
| 622 |
Execute68kTrap(0xa029, &r); // HLock() |
| 623 |
drvr_ptr = ReadMacInt32(r.a[0]); |
| 624 |
WriteMacInt32(drvr_ptr + dCtlDriver, ROMBaseMac + serd_offset + 0x300); // Pointer to driver header |
| 625 |
WriteMacInt16(drvr_ptr + dCtlFlags, (bin_driver[0] << 8) + bin_driver[1]); // Driver flags |
| 626 |
WriteMacInt16(drvr_ptr + dCtlQHdr + qFlags, 9); // Version number |
| 627 |
|
| 628 |
// Install .BOut driver |
| 629 |
r.d[0] = (uint32)-9; |
| 630 |
r.a[0] = ROMBaseMac + serd_offset + 0x400; |
| 631 |
Execute68kTrap(0xa53d, &r); // DrvrInstallRsrvMem() |
| 632 |
Execute68kTrap(0xa029, &r); // HLock() |
| 633 |
drvr_ptr = ReadMacInt32(r.a[0]); |
| 634 |
WriteMacInt32(drvr_ptr + dCtlDriver, ROMBaseMac + serd_offset + 0x400); // Pointer to driver header |
| 635 |
WriteMacInt16(drvr_ptr + dCtlFlags, (bout_driver[0] << 8) + bout_driver[1]); // Driver flags |
| 636 |
WriteMacInt16(drvr_ptr + dCtlQHdr + qFlags, 9); // Version number |
| 637 |
} |
| 638 |
|
| 639 |
|
| 640 |
/* |
| 641 |
* Install patches after MacOS startup |
| 642 |
*/ |
| 643 |
|
| 644 |
void PatchAfterStartup(void) |
| 645 |
{ |
| 646 |
// Install MemoryDispatch() replacement routine |
| 647 |
M68kRegisters r; |
| 648 |
r.a[0] = ROMBaseMac + memory_dispatch_offset; |
| 649 |
r.d[0] = 0xa05c; |
| 650 |
Execute68kTrap(0xa247, &r); // SetOSTrapAddress() |
| 651 |
} |
| 652 |
|
| 653 |
|
| 654 |
/* |
| 655 |
* Check ROM version, returns false if ROM version is not supported |
| 656 |
*/ |
| 657 |
|
| 658 |
bool CheckROM(void) |
| 659 |
{ |
| 660 |
// Read version |
| 661 |
ROMVersion = ntohs(*(uint16 *)(ROMBaseHost + 8)); |
| 662 |
|
| 663 |
#if REAL_ADDRESSING |
| 664 |
// Real addressing mode requires a 32-bit clean ROM |
| 665 |
return ROMVersion == ROM_VERSION_32; |
| 666 |
#else |
| 667 |
// Virtual addressing mode works with 32-bit clean Mac II ROMs and Classic ROMs (experimental) |
| 668 |
return (ROMVersion == ROM_VERSION_CLASSIC) || (ROMVersion == ROM_VERSION_32); |
| 669 |
#endif |
| 670 |
} |
| 671 |
|
| 672 |
|
| 673 |
/* |
| 674 |
* Install ROM patches, returns false if ROM version is not supported |
| 675 |
*/ |
| 676 |
|
| 677 |
// ROM patches for Mac Classic/SE ROMs (version $0276) |
| 678 |
static bool patch_rom_classic(void) |
| 679 |
{ |
| 680 |
uint16 *wp; |
| 681 |
uint32 base; |
| 682 |
|
| 683 |
// Don't jump into debugger (VIA line) |
| 684 |
wp = (uint16 *)(ROMBaseHost + 0x1c40); |
| 685 |
*wp = htons(0x601e); |
| 686 |
|
| 687 |
// Don't complain about incorrect ROM checksum |
| 688 |
wp = (uint16 *)(ROMBaseHost + 0x1c6c); |
| 689 |
*wp = htons(0x7c00); |
| 690 |
|
| 691 |
// Don't initialize IWM |
| 692 |
wp = (uint16 *)(ROMBaseHost + 0x50); |
| 693 |
*wp++ = htons(M68K_NOP); |
| 694 |
*wp = htons(M68K_NOP); |
| 695 |
|
| 696 |
// Skip startup sound |
| 697 |
wp = (uint16 *)(ROMBaseHost + 0x6a); |
| 698 |
*wp++ = htons(M68K_NOP); |
| 699 |
*wp = htons(M68K_NOP); |
| 700 |
|
| 701 |
// Don't loop in ADB init |
| 702 |
wp = (uint16 *)(ROMBaseHost + 0x3364); |
| 703 |
*wp = htons(M68K_NOP); |
| 704 |
|
| 705 |
// Patch ClkNoMem |
| 706 |
wp = (uint16 *)(ROMBaseHost + 0xa2c0); |
| 707 |
*wp++ = htons(M68K_EMUL_OP_CLKNOMEM); |
| 708 |
*wp = htons(0x4ed5); // jmp (a5) |
| 709 |
|
| 710 |
// Skip main memory test (not that it wouldn't pass, but it's faster that way) |
| 711 |
wp = (uint16 *)(ROMBaseHost + 0x11e); |
| 712 |
*wp++ = htons(M68K_NOP); |
| 713 |
*wp = htons(M68K_NOP); |
| 714 |
|
| 715 |
// Install our own drivers |
| 716 |
wp = (uint16 *)(ROMBaseHost + 0x3f82a); |
| 717 |
*wp++ = htons(M68K_EMUL_OP_INSTALL_DRIVERS); |
| 718 |
*wp++ = htons(M68K_NOP); |
| 719 |
*wp++ = htons(M68K_NOP); |
| 720 |
*wp = htons(M68K_NOP); |
| 721 |
|
| 722 |
#if 1 |
| 723 |
// Don't look for SCSI devices |
| 724 |
wp = (uint16 *)(ROMBaseHost + 0xd5a); |
| 725 |
*wp = htons(0x601e); |
| 726 |
#endif |
| 727 |
|
| 728 |
// Replace .Sony driver |
| 729 |
sony_offset = 0x34680; |
| 730 |
D(bug("sony %08lx\n", sony_offset)); |
| 731 |
memcpy(ROMBaseHost + sony_offset, sony_driver, sizeof(sony_driver)); |
| 732 |
|
| 733 |
// Install .Disk and .AppleCD drivers |
| 734 |
memcpy(ROMBaseHost + sony_offset + 0x100, disk_driver, sizeof(disk_driver)); |
| 735 |
memcpy(ROMBaseHost + sony_offset + 0x200, cdrom_driver, sizeof(cdrom_driver)); |
| 736 |
|
| 737 |
// Copy icons to ROM |
| 738 |
SonyDiskIconAddr = ROMBaseMac + sony_offset + 0x400; |
| 739 |
memcpy(ROMBaseHost + sony_offset + 0x400, SonyDiskIcon, sizeof(SonyDiskIcon)); |
| 740 |
SonyDriveIconAddr = ROMBaseMac + sony_offset + 0x600; |
| 741 |
memcpy(ROMBaseHost + sony_offset + 0x600, SonyDriveIcon, sizeof(SonyDriveIcon)); |
| 742 |
DiskIconAddr = ROMBaseMac + sony_offset + 0x800; |
| 743 |
memcpy(ROMBaseHost + sony_offset + 0x800, DiskIcon, sizeof(DiskIcon)); |
| 744 |
CDROMIconAddr = ROMBaseMac + sony_offset + 0xa00; |
| 745 |
memcpy(ROMBaseHost + sony_offset + 0xa00, CDROMIcon, sizeof(CDROMIcon)); |
| 746 |
|
| 747 |
// Install SERD patch and serial drivers |
| 748 |
serd_offset = 0x31bae; |
| 749 |
D(bug("serd %08lx\n", serd_offset)); |
| 750 |
wp = (uint16 *)(ROMBaseHost + serd_offset + 12); |
| 751 |
*wp++ = htons(M68K_EMUL_OP_SERD); |
| 752 |
*wp = htons(M68K_RTS); |
| 753 |
memcpy(ROMBaseHost + serd_offset + 0x100, ain_driver, sizeof(ain_driver)); |
| 754 |
memcpy(ROMBaseHost + serd_offset + 0x200, aout_driver, sizeof(aout_driver)); |
| 755 |
memcpy(ROMBaseHost + serd_offset + 0x300, bin_driver, sizeof(bin_driver)); |
| 756 |
memcpy(ROMBaseHost + serd_offset + 0x400, bout_driver, sizeof(bout_driver)); |
| 757 |
|
| 758 |
// Replace ADBOp() |
| 759 |
memcpy(ROMBaseHost + 0x3880, adbop_patch, sizeof(adbop_patch)); |
| 760 |
|
| 761 |
// Replace Time Manager |
| 762 |
wp = (uint16 *)(ROMBaseHost + 0x1a95c); |
| 763 |
*wp++ = htons(M68K_EMUL_OP_INSTIME); |
| 764 |
*wp = htons(M68K_RTS); |
| 765 |
wp = (uint16 *)(ROMBaseHost + 0x1a96a); |
| 766 |
*wp++ = htons(0x40e7); // move sr,-(sp) |
| 767 |
*wp++ = htons(0x007c); // ori #$0700,sr |
| 768 |
*wp++ = htons(0x0700); |
| 769 |
*wp++ = htons(M68K_EMUL_OP_RMVTIME); |
| 770 |
*wp++ = htons(0x46df); // move (sp)+,sr |
| 771 |
*wp = htons(M68K_RTS); |
| 772 |
wp = (uint16 *)(ROMBaseHost + 0x1a984); |
| 773 |
*wp++ = htons(0x40e7); // move sr,-(sp) |
| 774 |
*wp++ = htons(0x007c); // ori #$0700,sr |
| 775 |
*wp++ = htons(0x0700); |
| 776 |
*wp++ = htons(M68K_EMUL_OP_PRIMETIME); |
| 777 |
*wp++ = htons(0x46df); // move (sp)+,sr |
| 778 |
*wp++ = htons(M68K_RTS); |
| 779 |
microseconds_offset = (uint8 *)wp - ROMBaseHost; |
| 780 |
*wp++ = htons(M68K_EMUL_OP_MICROSECONDS); |
| 781 |
*wp = htons(M68K_RTS); |
| 782 |
|
| 783 |
// Replace SCSIDispatch() |
| 784 |
wp = (uint16 *)(ROMBaseHost + 0x1a206); |
| 785 |
*wp++ = htons(M68K_EMUL_OP_SCSI_DISPATCH); |
| 786 |
*wp++ = htons(0x2e49); // move.l a1,a7 |
| 787 |
*wp = htons(M68K_JMP_A0); |
| 788 |
|
| 789 |
// Modify vCheckLoad() so we can patch resources |
| 790 |
wp = (uint16 *)(ROMBaseHost + 0xe740); |
| 791 |
*wp++ = htons(M68K_JMP); |
| 792 |
*wp++ = htons((ROMBaseMac + sony_offset + 0x300) >> 16); |
| 793 |
*wp = htons((ROMBaseMac + sony_offset + 0x300) & 0xffff); |
| 794 |
wp = (uint16 *)(ROMBaseHost + sony_offset + 0x300); |
| 795 |
*wp++ = htons(0x2f03); // move.l d3,-(sp) (save type) |
| 796 |
*wp++ = htons(0x2078); // move.l $07f0,a0 |
| 797 |
*wp++ = htons(0x07f0); |
| 798 |
*wp++ = htons(M68K_JSR_A0); |
| 799 |
*wp++ = htons(0x221f); // move.l (sp)+,d1 (restore type) |
| 800 |
*wp++ = htons(M68K_EMUL_OP_CHECKLOAD); |
| 801 |
*wp = htons(M68K_RTS); |
| 802 |
|
| 803 |
// Install PutScrap() patch for clipboard data exchange (the patch is activated by EMUL_OP_INSTALL_DRIVERS) |
| 804 |
PutScrapPatch = ROMBaseMac + sony_offset + 0xc00; |
| 805 |
base = ROMBaseMac + 0x12794; |
| 806 |
wp = (uint16 *)(ROMBaseHost + sony_offset + 0xc00); |
| 807 |
*wp++ = htons(M68K_EMUL_OP_PUT_SCRAP); |
| 808 |
*wp++ = htons(M68K_JMP); |
| 809 |
*wp++ = htons(base >> 16); |
| 810 |
*wp = htons(base & 0xffff); |
| 811 |
|
| 812 |
#if 0 |
| 813 |
// Boot from internal EDisk |
| 814 |
wp = (uint16 *)(ROMBaseHost + 0x3f83c); |
| 815 |
*wp = htons(M68K_NOP); |
| 816 |
#endif |
| 817 |
|
| 818 |
// Patch VIA interrupt handler |
| 819 |
wp = (uint16 *)(ROMBaseHost + 0x2b3a); // Level 1 handler |
| 820 |
*wp++ = htons(0x5888); // addq.l #4,a0 |
| 821 |
*wp++ = htons(0x5888); // addq.l #4,a0 |
| 822 |
*wp++ = htons(M68K_NOP); |
| 823 |
*wp++ = htons(M68K_NOP); |
| 824 |
*wp++ = htons(M68K_NOP); |
| 825 |
*wp++ = htons(M68K_NOP); |
| 826 |
*wp++ = htons(M68K_NOP); |
| 827 |
*wp++ = htons(M68K_NOP); |
| 828 |
*wp = htons(M68K_NOP); |
| 829 |
|
| 830 |
wp = (uint16 *)(ROMBaseHost + 0x2be8); // 60Hz handler (handles everything) |
| 831 |
*wp++ = htons(M68K_EMUL_OP_IRQ); |
| 832 |
*wp++ = htons(0x4a80); // tst.l d0 |
| 833 |
*wp = htons(0x67f4); // beq 0x402be2 |
| 834 |
return true; |
| 835 |
} |
| 836 |
|
| 837 |
// ROM patches for 32-bit clean Mac-II ROMs (version $067c) |
| 838 |
static bool patch_rom_32(void) |
| 839 |
{ |
| 840 |
uint16 *wp; |
| 841 |
uint8 *bp; |
| 842 |
uint32 base; |
| 843 |
|
| 844 |
// Find UniversalInfo |
| 845 |
static const uint8 universal_dat[] = {0xdc, 0x00, 0x05, 0x05, 0x3f, 0xff, 0x01, 0x00}; |
| 846 |
if ((base = find_rom_data(0x3400, 0x3c00, universal_dat, sizeof(universal_dat))) == 0) return false; |
| 847 |
UniversalInfo = base - 0x10; |
| 848 |
D(bug("universal %08lx\n", UniversalInfo)); |
| 849 |
|
| 850 |
// Patch UniversalInfo (disable NuBus slots) |
| 851 |
bp = ROMBaseHost + UniversalInfo + ReadMacInt32(ROMBaseMac + UniversalInfo + 12); // nuBusInfoPtr |
| 852 |
bp[0] = 0x03; |
| 853 |
for (int i=1; i<16; i++) |
| 854 |
bp[i] = 0x08; |
| 855 |
|
| 856 |
// Set model ID from preferences |
| 857 |
bp = ROMBaseHost + UniversalInfo + 18; // productKind |
| 858 |
*bp = PrefsFindInt32("modelid"); |
| 859 |
|
| 860 |
// Make FPU optional |
| 861 |
if (FPUType == 0) { |
| 862 |
bp = ROMBaseHost + UniversalInfo + 22; // defaultRSRCs |
| 863 |
*bp = 4; // FPU optional |
| 864 |
} |
| 865 |
|
| 866 |
// Install special reset opcode and jump (skip hardware detection and tests) |
| 867 |
wp = (uint16 *)(ROMBaseHost + 0x8c); |
| 868 |
*wp++ = htons(M68K_EMUL_OP_RESET); |
| 869 |
*wp++ = htons(M68K_JMP); |
| 870 |
*wp++ = htons((ROMBaseMac + 0xba) >> 16); |
| 871 |
*wp = htons((ROMBaseMac + 0xba) & 0xffff); |
| 872 |
|
| 873 |
// Don't GetHardwareInfo |
| 874 |
wp = (uint16 *)(ROMBaseHost + 0xc2); |
| 875 |
*wp++ = htons(M68K_NOP); |
| 876 |
*wp = htons(M68K_NOP); |
| 877 |
|
| 878 |
// Don't init VIAs |
| 879 |
wp = (uint16 *)(ROMBaseHost + 0xc6); |
| 880 |
*wp++ = htons(M68K_NOP); |
| 881 |
*wp++ = htons(M68K_NOP); |
| 882 |
*wp++ = htons(M68K_NOP); |
| 883 |
*wp++ = htons(M68K_NOP); |
| 884 |
*wp++ = htons(M68K_NOP); |
| 885 |
*wp++ = htons(M68K_NOP); |
| 886 |
*wp++ = htons(M68K_NOP); |
| 887 |
*wp++ = htons(M68K_NOP); |
| 888 |
*wp++ = htons(M68K_NOP); |
| 889 |
*wp++ = htons(M68K_NOP); |
| 890 |
*wp++ = htons(M68K_NOP); |
| 891 |
*wp++ = htons(M68K_NOP); |
| 892 |
*wp++ = htons(M68K_NOP); |
| 893 |
*wp++ = htons(M68K_NOP); |
| 894 |
*wp = htons(M68K_NOP); |
| 895 |
|
| 896 |
// Fake CPU type test |
| 897 |
wp = (uint16 *)(ROMBaseHost + 0x7c0); |
| 898 |
*wp++ = htons(0x7e00 + CPUType); |
| 899 |
*wp = htons(M68K_RTS); |
| 900 |
|
| 901 |
// Don't clear end of BootGlobs upto end of RAM (address xxxx0000) |
| 902 |
static const uint8 clear_globs_dat[] = {0x42, 0x9a, 0x36, 0x0a, 0x66, 0xfa}; |
| 903 |
base = find_rom_data(0xa00, 0xb00, clear_globs_dat, sizeof(clear_globs_dat)); |
| 904 |
D(bug("clear_globs %08lx\n", base)); |
| 905 |
if (base) { // ROM15/20/22/23/26/27/32 |
| 906 |
wp = (uint16 *)(ROMBaseHost + base + 2); |
| 907 |
*wp++ = htons(M68K_NOP); |
| 908 |
*wp = htons(M68K_NOP); |
| 909 |
} |
| 910 |
|
| 911 |
// Patch InitMMU (no MMU present, don't choke on unknown CPU types) |
| 912 |
if (ROMSize <= 0x80000) { |
| 913 |
static const uint8 init_mmu_dat[] = {0x0c, 0x47, 0x00, 0x03, 0x62, 0x00, 0xfe}; |
| 914 |
if ((base = find_rom_data(0x4000, 0x50000, init_mmu_dat, sizeof(init_mmu_dat))) == 0) return false; |
| 915 |
} else { |
| 916 |
static const uint8 init_mmu_dat[] = {0x0c, 0x47, 0x00, 0x04, 0x62, 0x00, 0xfd}; |
| 917 |
if ((base = find_rom_data(0x80000, 0x90000, init_mmu_dat, sizeof(init_mmu_dat))) == 0) return false; |
| 918 |
} |
| 919 |
D(bug("init_mmu %08lx\n", base)); |
| 920 |
wp = (uint16 *)(ROMBaseHost + base); |
| 921 |
*wp++ = htons(M68K_NOP); |
| 922 |
*wp++ = htons(M68K_NOP); |
| 923 |
*wp++ = htons(M68K_NOP); |
| 924 |
*wp++ = htons(M68K_NOP); |
| 925 |
wp++; |
| 926 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 927 |
*wp = htons(M68K_NOP); |
| 928 |
|
| 929 |
// Patch InitMMU (no RBV present) |
| 930 |
static const uint8 init_mmu2_dat[] = {0x08, 0x06, 0x00, 0x0d, 0x67}; |
| 931 |
if (ROMSize <= 0x80000) { |
| 932 |
base = find_rom_data(0x4000, 0x50000, init_mmu2_dat, sizeof(init_mmu2_dat)); |
| 933 |
} else { |
| 934 |
base = find_rom_data(0x80000, 0x90000, init_mmu2_dat, sizeof(init_mmu2_dat)); |
| 935 |
} |
| 936 |
D(bug("init_mmu2 %08lx\n", base)); |
| 937 |
if (base) { // ROM11/10/13/26 |
| 938 |
bp = (uint8 *)(ROMBaseHost + base + 4); |
| 939 |
*bp = 0x60; // bra |
| 940 |
} |
| 941 |
|
| 942 |
// Patch InitMMU (don't init MMU) |
| 943 |
static const uint8 init_mmu3_dat[] = {0x0c, 0x2e, 0x00, 0x01, 0xff, 0xe6, 0x66, 0x0c, 0x4c, 0xed, 0x03, 0x87, 0xff, 0xe8}; |
| 944 |
if (ROMSize <= 0x80000) { |
| 945 |
if ((base = find_rom_data(0x4000, 0x50000, init_mmu3_dat, sizeof(init_mmu3_dat))) == 0) return false; |
| 946 |
} else { |
| 947 |
if ((base = find_rom_data(0x80000, 0x90000, init_mmu3_dat, sizeof(init_mmu3_dat))) == 0) return false; |
| 948 |
} |
| 949 |
D(bug("init_mmu3 %08lx\n", base)); |
| 950 |
wp = (uint16 *)(ROMBaseHost + base + 6); |
| 951 |
*wp = htons(M68K_NOP); |
| 952 |
|
| 953 |
// Replace XPRAM routines |
| 954 |
static const uint8 read_xpram_dat[] = {0x26, 0x4e, 0x41, 0xf9, 0x50, 0xf0, 0x00, 0x00, 0x08, 0x90, 0x00, 0x02}; |
| 955 |
base = find_rom_data(0x40000, 0x50000, read_xpram_dat, sizeof(read_xpram_dat)); |
| 956 |
D(bug("read_xpram %08lx\n", base)); |
| 957 |
if (base) { // ROM10 |
| 958 |
wp = (uint16 *)(ROMBaseHost + base); |
| 959 |
*wp++ = htons(M68K_EMUL_OP_READ_XPRAM); |
| 960 |
*wp = htons(0x4ed6); // jmp (a6) |
| 961 |
} |
| 962 |
static const uint8 read_xpram2_dat[] = {0x26, 0x4e, 0x08, 0x92, 0x00, 0x02, 0xea, 0x59, 0x02, 0x01, 0x00, 0x07, 0x00, 0x01, 0x00, 0xb8}; |
| 963 |
base = find_rom_data(0x40000, 0x50000, read_xpram2_dat, sizeof(read_xpram2_dat)); |
| 964 |
D(bug("read_xpram2 %08lx\n", base)); |
| 965 |
if (base) { // ROM11 |
| 966 |
wp = (uint16 *)(ROMBaseHost + base); |
| 967 |
*wp++ = htons(M68K_EMUL_OP_READ_XPRAM); |
| 968 |
*wp = htons(0x4ed6); // jmp (a6) |
| 969 |
} |
| 970 |
if (ROMSize > 0x80000) { |
| 971 |
static const uint8 read_xpram3_dat[] = {0x48, 0xe7, 0xe0, 0x60, 0x02, 0x01, 0x00, 0x70, 0x0c, 0x01, 0x00, 0x20}; |
| 972 |
base = find_rom_data(0x80000, 0x90000, read_xpram3_dat, sizeof(read_xpram3_dat)); |
| 973 |
D(bug("read_xpram3 %08lx\n", base)); |
| 974 |
if (base) { // ROM15 |
| 975 |
wp = (uint16 *)(ROMBaseHost + base); |
| 976 |
*wp++ = htons(M68K_EMUL_OP_READ_XPRAM2); |
| 977 |
*wp = htons(M68K_RTS); |
| 978 |
} |
| 979 |
} |
| 980 |
|
| 981 |
// Patch ClkNoMem |
| 982 |
base = find_rom_trap(0xa053); |
| 983 |
wp = (uint16 *)(ROMBaseHost + base); |
| 984 |
if (ntohs(*wp) == 0x4ed5) { // ROM23/26/27/32 |
| 985 |
static const uint8 clk_no_mem_dat[] = {0x40, 0xc2, 0x00, 0x7c, 0x07, 0x00, 0x48, 0x42}; |
| 986 |
if ((base = find_rom_data(0xb0000, 0xb8000, clk_no_mem_dat, sizeof(clk_no_mem_dat))) == 0) return false; |
| 987 |
} |
| 988 |
D(bug("clk_no_mem %08lx\n", base)); |
| 989 |
wp = (uint16 *)(ROMBaseHost + base); |
| 990 |
*wp++ = htons(M68K_EMUL_OP_CLKNOMEM); |
| 991 |
*wp = htons(0x4ed5); // jmp (a5) |
| 992 |
|
| 993 |
// Patch BootGlobs |
| 994 |
wp = (uint16 *)(ROMBaseHost + 0x10e); |
| 995 |
*wp++ = htons(M68K_EMUL_OP_PATCH_BOOT_GLOBS); |
| 996 |
*wp = htons(M68K_NOP); |
| 997 |
|
| 998 |
// Don't init SCC |
| 999 |
static const uint8 init_scc_dat[] = {0x08, 0x38, 0x00, 0x01, 0x0d, 0xd1, 0x67, 0x04}; |
| 1000 |
if ((base = find_rom_data(0xa00, 0xa80, init_scc_dat, sizeof(init_scc_dat))) == 0) return false; |
| 1001 |
D(bug("init_scc %08lx\n", base)); |
| 1002 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1003 |
*wp = htons(M68K_RTS); |
| 1004 |
|
| 1005 |
// Don't access 0x50f1a101 |
| 1006 |
wp = (uint16 *)(ROMBaseHost + 0x4232); |
| 1007 |
if (ntohs(wp[1]) == 0x50f1 && ntohs(wp[2]) == 0xa101) { // ROM32 |
| 1008 |
*wp++ = htons(M68K_NOP); |
| 1009 |
*wp++ = htons(M68K_NOP); |
| 1010 |
*wp++ = htons(M68K_NOP); |
| 1011 |
*wp++ = htons(M68K_NOP); |
| 1012 |
*wp = htons(M68K_NOP); |
| 1013 |
} |
| 1014 |
|
| 1015 |
// Don't init IWM |
| 1016 |
wp = (uint16 *)(ROMBaseHost + 0x9c0); |
| 1017 |
*wp = htons(M68K_RTS); |
| 1018 |
|
| 1019 |
// Don't init SCSI |
| 1020 |
wp = (uint16 *)(ROMBaseHost + 0x9a0); |
| 1021 |
*wp = htons(M68K_RTS); |
| 1022 |
|
| 1023 |
// Don't init ASC |
| 1024 |
static const uint8 init_asc_dat[] = {0x26, 0x68, 0x00, 0x30, 0x12, 0x00, 0xeb, 0x01}; |
| 1025 |
base = find_rom_data(0x4000, 0x5000, init_asc_dat, sizeof(init_asc_dat)); |
| 1026 |
D(bug("init_asc %08lx\n", base)); |
| 1027 |
if (base) { // ROM15/22/23/26/27/32 |
| 1028 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1029 |
*wp = htons(0x4ed6); // jmp (a6) |
| 1030 |
} |
| 1031 |
|
| 1032 |
// Don't EnableExtCache |
| 1033 |
wp = (uint16 *)(ROMBaseHost + 0x190); |
| 1034 |
*wp++ = htons(M68K_NOP); |
| 1035 |
*wp = htons(M68K_NOP); |
| 1036 |
|
| 1037 |
// Don't DisableIntSources |
| 1038 |
wp = (uint16 *)(ROMBaseHost + 0x9f4c); |
| 1039 |
*wp = htons(M68K_RTS); |
| 1040 |
|
| 1041 |
// Fake CPU speed test (SetupTimeK) |
| 1042 |
wp = (uint16 *)(ROMBaseHost + 0x800); |
| 1043 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeDBRA |
| 1044 |
*wp++ = htons(100); |
| 1045 |
*wp++ = htons(0x0d00); |
| 1046 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeSCCDBRA |
| 1047 |
*wp++ = htons(100); |
| 1048 |
*wp++ = htons(0x0d02); |
| 1049 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeSCSIDBRA |
| 1050 |
*wp++ = htons(100); |
| 1051 |
*wp++ = htons(0x0b24); |
| 1052 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeRAMDBRA |
| 1053 |
*wp++ = htons(100); |
| 1054 |
*wp++ = htons(0x0cea); |
| 1055 |
*wp = htons(M68K_RTS); |
| 1056 |
|
| 1057 |
#if REAL_ADDRESSING |
| 1058 |
// Move system zone to start of Mac RAM |
| 1059 |
lp = (uint32 *)(ROMBaseHost + 0x50a); |
| 1060 |
*lp++ = htonl(RAMBaseMac); |
| 1061 |
*lp = htonl(RAMBaseMac + 0x1800); |
| 1062 |
#endif |
| 1063 |
|
| 1064 |
#if !ROM_IS_WRITE_PROTECTED |
| 1065 |
#if defined(AMIGA) |
| 1066 |
// Set fake handle at 0x0000 to scratch memory area (so broken Mac programs won't write into Mac ROM) |
| 1067 |
extern uint32 ScratchMem; |
| 1068 |
wp = (uint16 *)(ROMBaseHost + 0xccaa); |
| 1069 |
*wp++ = htons(0x203c); // move.l #ScratchMem,d0 |
| 1070 |
*wp++ = htons(ScratchMem >> 16); |
| 1071 |
*wp = htons(ScratchMem); |
| 1072 |
#else |
| 1073 |
#error System specific handling for writable ROM is required here |
| 1074 |
#endif |
| 1075 |
#endif |
| 1076 |
|
| 1077 |
#if REAL_ADDRESSING && defined(AMIGA) |
| 1078 |
// Don't overwrite SysBase under AmigaOS |
| 1079 |
wp = (uint16 *)(ROMBaseHost + 0xccb4); |
| 1080 |
*wp++ = htons(M68K_NOP); |
| 1081 |
*wp = htons(M68K_NOP); |
| 1082 |
#endif |
| 1083 |
|
| 1084 |
// Don't write to VIA in InitTimeMgr |
| 1085 |
wp = (uint16 *)(ROMBaseHost + 0xb0e2); |
| 1086 |
*wp++ = htons(0x4cdf); // movem.l (sp)+,d0-d5/a0-a4 |
| 1087 |
*wp++ = htons(0x1f3f); |
| 1088 |
*wp = htons(M68K_RTS); |
| 1089 |
|
| 1090 |
// Don't read ModelID from 0x5ffffffc |
| 1091 |
static const uint8 model_id_dat[] = {0x20, 0x7c, 0x5f, 0xff, 0xff, 0xfc, 0x72, 0x07, 0xc2, 0x90}; |
| 1092 |
base = find_rom_data(0x40000, 0x50000, model_id_dat, sizeof(model_id_dat)); |
| 1093 |
D(bug("model_id %08lx\n", base)); |
| 1094 |
if (base) { // ROM20 |
| 1095 |
wp = (uint16 *)(ROMBaseHost + base + 8); |
| 1096 |
*wp++ = htons(M68K_NOP); |
| 1097 |
*wp++ = htons(M68K_NOP); |
| 1098 |
*wp++ = htons(M68K_NOP); |
| 1099 |
*wp = htons(M68K_NOP); |
| 1100 |
} |
| 1101 |
|
| 1102 |
// Don't read ModelID from 0x5ffffffc |
| 1103 |
static const uint8 model_id2_dat[] = {0x45, 0xf9, 0x5f, 0xff, 0xff, 0xfc, 0x20, 0x12}; |
| 1104 |
base = find_rom_data(0x4000, 0x5000, model_id2_dat, sizeof(model_id2_dat)); |
| 1105 |
D(bug("model_id2 %08lx\n", base)); |
| 1106 |
if (base) { // ROM27/32 |
| 1107 |
wp = (uint16 *)(ROMBaseHost + base + 6); |
| 1108 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 1109 |
*wp++ = htons(0xb040); // cmp.w d0,d0 |
| 1110 |
*wp = htons(0x4ed6); // jmp (a6) |
| 1111 |
} |
| 1112 |
|
| 1113 |
// Install slot ROM |
| 1114 |
if (!InstallSlotROM()) |
| 1115 |
return false; |
| 1116 |
|
| 1117 |
// Don't probe NuBus slots |
| 1118 |
static const uint8 nubus_dat[] = {0x45, 0xfa, 0x00, 0x0a, 0x42, 0xa7, 0x10, 0x11}; |
| 1119 |
base = find_rom_data(0x5000, 0x6000, nubus_dat, sizeof(nubus_dat)); |
| 1120 |
D(bug("nubus %08lx\n", base)); |
| 1121 |
if (base) { // ROM10/11 |
| 1122 |
wp = (uint16 *)(ROMBaseHost + base + 6); |
| 1123 |
*wp++ = htons(M68K_NOP); |
| 1124 |
*wp++ = htons(M68K_NOP); |
| 1125 |
*wp = htons(M68K_NOP); |
| 1126 |
} |
| 1127 |
|
| 1128 |
// Don't EnableOneSecInts |
| 1129 |
static const uint8 lea_dat[] = {0x41, 0xf9}; |
| 1130 |
if ((base = find_rom_data(0x226, 0x22a, lea_dat, sizeof(lea_dat))) == 0) return false; |
| 1131 |
D(bug("enable_one_sec_ints %08lx\n", base)); |
| 1132 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1133 |
*wp++ = htons(M68K_NOP); |
| 1134 |
*wp++ = htons(M68K_NOP); |
| 1135 |
*wp++ = htons(M68K_NOP); |
| 1136 |
*wp++ = htons(M68K_NOP); |
| 1137 |
*wp = htons(M68K_NOP); |
| 1138 |
|
| 1139 |
// Don't EnableParityPatch/Enable60HzInts |
| 1140 |
if ((base = find_rom_data(0x230, 0x234, lea_dat, sizeof(lea_dat))) == 0) { |
| 1141 |
wp = (uint16 *)(ROMBaseHost + 0x230); |
| 1142 |
if (ntohs(*wp) == 0x6100) // ROM11 |
| 1143 |
base = 0x230; |
| 1144 |
else |
| 1145 |
return false; |
| 1146 |
} |
| 1147 |
D(bug("enable_60hz_ints %08lx\n", base)); |
| 1148 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1149 |
*wp++ = htons(M68K_NOP); |
| 1150 |
*wp++ = htons(M68K_NOP); |
| 1151 |
*wp++ = htons(M68K_NOP); |
| 1152 |
*wp++ = htons(M68K_NOP); |
| 1153 |
*wp = htons(M68K_NOP); |
| 1154 |
|
| 1155 |
// Fix logical/physical RAM size (CompBootStack) (must be done after InitMemMgr!) |
| 1156 |
static const uint8 fix_memsize_dat[] = {0x4e, 0x75}; |
| 1157 |
if ((base = find_rom_data(0x490, 0x4b0, fix_memsize_dat, sizeof(fix_memsize_dat))) == 0) return false; |
| 1158 |
D(bug("fix_memsize %08lx\n", base)); |
| 1159 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1160 |
*wp++ = htons(M68K_EMUL_OP_FIX_MEMSIZE); |
| 1161 |
*wp = htons(M68K_RTS); |
| 1162 |
|
| 1163 |
static const uint8 fix_memsize2_dat[] = {0x22, 0x30, 0x81, 0xe2, 0x0d, 0xdc, 0xff, 0xba, 0xd2, 0xb0, 0x81, 0xe2, 0x0d, 0xdc, 0xff, 0xec, 0x21, 0xc1, 0x1e, 0xf8}; |
| 1164 |
base = find_rom_data(0x4c000, 0x4c080, fix_memsize2_dat, sizeof(fix_memsize2_dat)); |
| 1165 |
D(bug("fix_memsize2 %08lx\n", base)); |
| 1166 |
if (base) { // ROM15/22/23/26/27/32 |
| 1167 |
wp = (uint16 *)(ROMBaseHost + base + 16); |
| 1168 |
*wp++ = htons(M68K_NOP); |
| 1169 |
*wp = htons(M68K_NOP); |
| 1170 |
} |
| 1171 |
|
| 1172 |
// Don't open .Sound driver but install our own drivers |
| 1173 |
wp = (uint16 *)(ROMBaseHost + 0x1142); |
| 1174 |
*wp = htons(M68K_EMUL_OP_INSTALL_DRIVERS); |
| 1175 |
|
| 1176 |
// Don't access SonyVars |
| 1177 |
wp = (uint16 *)(ROMBaseHost + 0x1144); |
| 1178 |
*wp++ = htons(M68K_NOP); |
| 1179 |
*wp++ = htons(M68K_NOP); |
| 1180 |
*wp++ = htons(M68K_NOP); |
| 1181 |
*wp++ = htons(M68K_NOP); |
| 1182 |
wp += 2; |
| 1183 |
*wp = htons(M68K_NOP); |
| 1184 |
|
| 1185 |
// Don't write to VIA in InitADB |
| 1186 |
wp = (uint16 *)(ROMBaseHost + 0xa8a8); |
| 1187 |
if (*wp == 0) { // ROM22/23/26/27/32 |
| 1188 |
wp = (uint16 *)(ROMBaseHost + 0xb2c6a); |
| 1189 |
*wp++ = htons(M68K_NOP); |
| 1190 |
*wp++ = htons(M68K_NOP); |
| 1191 |
*wp = htons(M68K_NOP); |
| 1192 |
wp = (uint16 *)(ROMBaseHost + 0xb2d2e); |
| 1193 |
*wp++ = htons(M68K_NOP); |
| 1194 |
*wp++ = htons(M68K_NOP); |
| 1195 |
*wp++ = htons(M68K_NOP); |
| 1196 |
*wp++ = htons(M68K_NOP); |
| 1197 |
*wp++ = htons(M68K_NOP); |
| 1198 |
*wp++ = htons(M68K_NOP); |
| 1199 |
*wp++ = htons(M68K_NOP); |
| 1200 |
*wp++ = htons(M68K_NOP); |
| 1201 |
*wp++ = htons(M68K_NOP); |
| 1202 |
*wp++ = htons(M68K_NOP); |
| 1203 |
*wp++ = htons(M68K_NOP); |
| 1204 |
*wp++ = htons(M68K_NOP); |
| 1205 |
wp += 2; |
| 1206 |
*wp++ = htons(M68K_NOP); |
| 1207 |
*wp = htons(M68K_NOP); |
| 1208 |
} else { |
| 1209 |
*wp++ = htons(M68K_NOP); |
| 1210 |
*wp++ = htons(M68K_NOP); |
| 1211 |
*wp = htons(M68K_NOP); |
| 1212 |
wp = (uint16 *)(ROMBaseHost + 0xa662); |
| 1213 |
*wp++ = htons(M68K_NOP); |
| 1214 |
*wp++ = htons(M68K_NOP); |
| 1215 |
*wp++ = htons(M68K_NOP); |
| 1216 |
*wp++ = htons(M68K_NOP); |
| 1217 |
*wp++ = htons(M68K_NOP); |
| 1218 |
wp += 2; |
| 1219 |
*wp++ = htons(M68K_NOP); |
| 1220 |
*wp = htons(M68K_NOP); |
| 1221 |
} |
| 1222 |
|
| 1223 |
// Don't EnableSlotInts |
| 1224 |
if ((base = find_rom_data(0x2ee, 0x2f2, lea_dat, sizeof(lea_dat))) == 0) return false; |
| 1225 |
D(bug("enable_slot_ints %08lx\n", base)); |
| 1226 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1227 |
*wp++ = htons(M68K_NOP); |
| 1228 |
*wp++ = htons(M68K_NOP); |
| 1229 |
*wp++ = htons(M68K_NOP); |
| 1230 |
*wp++ = htons(M68K_NOP); |
| 1231 |
*wp = htons(M68K_NOP); |
| 1232 |
|
| 1233 |
// Don't mangle frame buffer base (GetDevBase) |
| 1234 |
wp = (uint16 *)(ROMBaseHost + 0x5b78); |
| 1235 |
*wp++ = htons(M68K_NOP); |
| 1236 |
*wp++ = htons(M68K_NOP); |
| 1237 |
*wp++ = htons(0x2401); // move.l d1,d2 |
| 1238 |
*wp = htons(0x605e); // bra 0x40805bde |
| 1239 |
|
| 1240 |
// Really don't mangle frame buffer base |
| 1241 |
if (ROMSize > 0x80000) { |
| 1242 |
static const uint8 frame_base_dat[] = {0x22, 0x78, 0x0d, 0xd8, 0xd3, 0xe9, 0x00, 0x08}; |
| 1243 |
base = find_rom_data(0x8c000, 0x8d000, frame_base_dat, sizeof(frame_base_dat)); |
| 1244 |
D(bug("frame_base %08lx\n", base)); |
| 1245 |
if (base) { // ROM22/23/26/27/32 |
| 1246 |
wp = (uint16 *)(ROMBaseHost + base); |
| 1247 |
*wp++ = htons(0x2401); // move.l d1,d2 |
| 1248 |
*wp = htons(M68K_RTS); |
| 1249 |
} |
| 1250 |
} |
| 1251 |
|
| 1252 |
// Don't write to VIA2 |
| 1253 |
static const uint8 via2_dat[] = {0x20, 0x78, 0x0c, 0xec, 0x11, 0x7c, 0x00, 0x90}; |
| 1254 |
if ((base = find_rom_data(0xa000, 0xa400, via2_dat, sizeof(via2_dat))) == 0) return false; |
| 1255 |
D(bug("via2 %08lx\n", base)); |
| 1256 |
wp = (uint16 *)(ROMBaseHost + base + 4); |
| 1257 |
*wp = htons(M68K_RTS); |
| 1258 |
|
| 1259 |
// Don't write to VIA2, even on ROM20 |
| 1260 |
static const uint8 via2b_dat[] = {0x20, 0x78, 0x0c, 0xec, 0x11, 0x7c, 0x00, 0x90, 0x00, 0x13, 0x4e, 0x75}; |
| 1261 |
base = find_rom_data(0x40000, 0x44000, via2b_dat, sizeof(via2b_dat)); |
| 1262 |
D(bug("via2b %08lx\n", base)); |
| 1263 |
if (base) { // ROM19/20 |
| 1264 |
wp = (uint16 *)(ROMBaseHost + base + 4); |
| 1265 |
*wp = htons(M68K_RTS); |
| 1266 |
} |
| 1267 |
|
| 1268 |
// Don't use PTEST instruction on 68040/060 |
| 1269 |
if (ROMSize > 0x80000) { |
| 1270 |
|
| 1271 |
// BlockMove() |
| 1272 |
static const uint8 ptest_dat[] = {0xa0, 0x8d, 0x0c, 0x81, 0x00, 0x00, 0x0c, 0x00, 0x6d, 0x06, 0x4e, 0x71, 0xf4, 0xf8}; |
| 1273 |
base = find_rom_data(0x87000, 0x87800, ptest_dat, sizeof(ptest_dat)); |
| 1274 |
D(bug("ptest %08lx\n", base)); |
| 1275 |
if (base) { // ROM15/22/23/26/27/32 |
| 1276 |
wp = (uint16 *)(ROMBaseHost + base + 8); |
| 1277 |
*wp = htons(M68K_NOP); |
| 1278 |
} |
| 1279 |
|
| 1280 |
// SANE |
| 1281 |
static const uint8 ptest2_dat[] = {0x0c, 0x38, 0x00, 0x04, 0x01, 0x2f, 0x6d, 0x54, 0x48, 0xe7, 0xf8, 0x60}; |
| 1282 |
base = find_rom_data(0, ROMSize, ptest2_dat, sizeof(ptest2_dat)); |
| 1283 |
D(bug("ptest2 %08lx\n", base)); |
| 1284 |
if (base) { // ROM15/20/22/23/26/27/32 |
| 1285 |
wp = (uint16 *)(ROMBaseHost + base + 8); |
| 1286 |
*wp++ = htons(M68K_NOP); |
| 1287 |
*wp++ = htons(0xf4f8); // cpusha dc/ic |
| 1288 |
*wp++ = htons(M68K_NOP); |
| 1289 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 1290 |
*wp = htons(M68K_RTS); |
| 1291 |
} |
| 1292 |
} |
| 1293 |
|
| 1294 |
// Patch .EDisk driver (don't scan for EDisks in the area ROMBase..0xe00000) |
| 1295 |
uint32 edisk_offset = find_rom_resource('DRVR', 51); |
| 1296 |
if (edisk_offset) { |
| 1297 |
static const uint8 edisk_dat[] = {0xd5, 0xfc, 0x00, 0x01, 0x00, 0x00, 0xb5, 0xfc, 0x00, 0xe0, 0x00, 0x00}; |
| 1298 |
base = find_rom_data(edisk_offset, edisk_offset + 0x10000, edisk_dat, sizeof(edisk_dat)); |
| 1299 |
D(bug("edisk %08lx\n", base)); |
| 1300 |
if (base) { |
| 1301 |
wp = (uint16 *)(ROMBaseHost + base + 8); |
| 1302 |
*wp++ = 0; |
| 1303 |
*wp = 0; |
| 1304 |
} |
| 1305 |
} |
| 1306 |
|
| 1307 |
// Replace .Sony driver |
| 1308 |
sony_offset = find_rom_resource('DRVR', 4); |
| 1309 |
D(bug("sony %08lx\n", sony_offset)); |
| 1310 |
memcpy(ROMBaseHost + sony_offset, sony_driver, sizeof(sony_driver)); |
| 1311 |
|
| 1312 |
// Install .Disk and .AppleCD drivers |
| 1313 |
memcpy(ROMBaseHost + sony_offset + 0x100, disk_driver, sizeof(disk_driver)); |
| 1314 |
memcpy(ROMBaseHost + sony_offset + 0x200, cdrom_driver, sizeof(cdrom_driver)); |
| 1315 |
|
| 1316 |
// Copy icons to ROM |
| 1317 |
SonyDiskIconAddr = ROMBaseMac + sony_offset + 0x400; |
| 1318 |
memcpy(ROMBaseHost + sony_offset + 0x400, SonyDiskIcon, sizeof(SonyDiskIcon)); |
| 1319 |
SonyDriveIconAddr = ROMBaseMac + sony_offset + 0x600; |
| 1320 |
memcpy(ROMBaseHost + sony_offset + 0x600, SonyDriveIcon, sizeof(SonyDriveIcon)); |
| 1321 |
DiskIconAddr = ROMBaseMac + sony_offset + 0x800; |
| 1322 |
memcpy(ROMBaseHost + sony_offset + 0x800, DiskIcon, sizeof(DiskIcon)); |
| 1323 |
CDROMIconAddr = ROMBaseMac + sony_offset + 0xa00; |
| 1324 |
memcpy(ROMBaseHost + sony_offset + 0xa00, CDROMIcon, sizeof(CDROMIcon)); |
| 1325 |
|
| 1326 |
// Install SERD patch and serial drivers |
| 1327 |
serd_offset = find_rom_resource('SERD', 0); |
| 1328 |
D(bug("serd %08lx\n", serd_offset)); |
| 1329 |
wp = (uint16 *)(ROMBaseHost + serd_offset + 12); |
| 1330 |
*wp++ = htons(M68K_EMUL_OP_SERD); |
| 1331 |
*wp = htons(M68K_RTS); |
| 1332 |
memcpy(ROMBaseHost + serd_offset + 0x100, ain_driver, sizeof(ain_driver)); |
| 1333 |
memcpy(ROMBaseHost + serd_offset + 0x200, aout_driver, sizeof(aout_driver)); |
| 1334 |
memcpy(ROMBaseHost + serd_offset + 0x300, bin_driver, sizeof(bin_driver)); |
| 1335 |
memcpy(ROMBaseHost + serd_offset + 0x400, bout_driver, sizeof(bout_driver)); |
| 1336 |
|
| 1337 |
// Replace ADBOp() |
| 1338 |
memcpy(ROMBaseHost + find_rom_trap(0xa07c), adbop_patch, sizeof(adbop_patch)); |
| 1339 |
|
| 1340 |
// Replace Time Manager (the Microseconds patch is activated in InstallDrivers()) |
| 1341 |
wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa058)); |
| 1342 |
*wp++ = htons(M68K_EMUL_OP_INSTIME); |
| 1343 |
*wp = htons(M68K_RTS); |
| 1344 |
wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa059)); |
| 1345 |
*wp++ = htons(0x40e7); // move sr,-(sp) |
| 1346 |
*wp++ = htons(0x007c); // ori #$0700,sr |
| 1347 |
*wp++ = htons(0x0700); |
| 1348 |
*wp++ = htons(M68K_EMUL_OP_RMVTIME); |
| 1349 |
*wp++ = htons(0x46df); // move (sp)+,sr |
| 1350 |
*wp = htons(M68K_RTS); |
| 1351 |
wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa05a)); |
| 1352 |
*wp++ = htons(0x40e7); // move sr,-(sp) |
| 1353 |
*wp++ = htons(0x007c); // ori #$0700,sr |
| 1354 |
*wp++ = htons(0x0700); |
| 1355 |
*wp++ = htons(M68K_EMUL_OP_PRIMETIME); |
| 1356 |
*wp++ = htons(0x46df); // move (sp)+,sr |
| 1357 |
*wp++ = htons(M68K_RTS); |
| 1358 |
microseconds_offset = (uint8 *)wp - ROMBaseHost; |
| 1359 |
*wp++ = htons(M68K_EMUL_OP_MICROSECONDS); |
| 1360 |
*wp = htons(M68K_RTS); |
| 1361 |
|
| 1362 |
// Replace SCSIDispatch() |
| 1363 |
wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa815)); |
| 1364 |
*wp++ = htons(M68K_EMUL_OP_SCSI_DISPATCH); |
| 1365 |
*wp++ = htons(0x2e49); // move.l a1,a7 |
| 1366 |
*wp = htons(M68K_JMP_A0); |
| 1367 |
|
| 1368 |
// Modify vCheckLoad() so we can patch resources |
| 1369 |
wp = (uint16 *)(ROMBaseHost + 0x1b8f4); |
| 1370 |
*wp++ = htons(M68K_JMP); |
| 1371 |
*wp++ = htons((ROMBaseMac + sony_offset + 0x300) >> 16); |
| 1372 |
*wp = htons((ROMBaseMac + sony_offset + 0x300) & 0xffff); |
| 1373 |
wp = (uint16 *)(ROMBaseHost + sony_offset + 0x300); |
| 1374 |
*wp++ = htons(0x2f03); // move.l d3,-(sp) (save type) |
| 1375 |
*wp++ = htons(0x2078); // move.l $07f0,a0 |
| 1376 |
*wp++ = htons(0x07f0); |
| 1377 |
*wp++ = htons(M68K_JSR_A0); |
| 1378 |
*wp++ = htons(0x221f); // move.l (sp)+,d1 (restore type) |
| 1379 |
*wp++ = htons(M68K_EMUL_OP_CHECKLOAD); |
| 1380 |
*wp = htons(M68K_RTS); |
| 1381 |
|
| 1382 |
// Patch PowerOff() |
| 1383 |
wp = (uint16 *)(ROMBaseHost + find_rom_trap(0xa05b)); // PowerOff() |
| 1384 |
*wp = htons(M68K_EMUL_OP_SHUTDOWN); |
| 1385 |
|
| 1386 |
// Install PutScrap() patch for clipboard data exchange (the patch is activated by EMUL_OP_INSTALL_DRIVERS) |
| 1387 |
PutScrapPatch = ROMBaseMac + sony_offset + 0xc00; |
| 1388 |
base = ROMBaseMac + find_rom_trap(0xa9fe); |
| 1389 |
wp = (uint16 *)(ROMBaseHost + sony_offset + 0xc00); |
| 1390 |
*wp++ = htons(M68K_EMUL_OP_PUT_SCRAP); |
| 1391 |
*wp++ = htons(M68K_JMP); |
| 1392 |
*wp++ = htons(base >> 16); |
| 1393 |
*wp = htons(base & 0xffff); |
| 1394 |
|
| 1395 |
// Install MemoryDispatch() replacement routine (activated in PatchAfterStartup()) |
| 1396 |
memory_dispatch_offset = sony_offset + 0xc20; |
| 1397 |
wp = (uint16 *)(ROMBaseHost + memory_dispatch_offset); |
| 1398 |
*wp++ = htons(M68K_EMUL_OP_MEMORY_DISPATCH); |
| 1399 |
*wp = htons(M68K_RTS); |
| 1400 |
|
| 1401 |
// Patch VIA interrupt handler |
| 1402 |
wp = (uint16 *)(ROMBaseHost + 0x9bc4); // Level 1 handler |
| 1403 |
*wp++ = htons(0x7002); // moveq #2,d0 (always 60Hz interrupt) |
| 1404 |
*wp++ = htons(M68K_NOP); |
| 1405 |
*wp++ = htons(M68K_NOP); |
| 1406 |
*wp++ = htons(M68K_NOP); |
| 1407 |
*wp = htons(M68K_NOP); |
| 1408 |
|
| 1409 |
wp = (uint16 *)(ROMBaseHost + 0xa29a); // 60Hz handler (handles everything) |
| 1410 |
*wp++ = htons(M68K_EMUL_OP_IRQ); |
| 1411 |
*wp++ = htons(0x4a80); // tst.l d0 |
| 1412 |
*wp = htons(0x67f4); // beq 0x4080a294 |
| 1413 |
return true; |
| 1414 |
} |
| 1415 |
|
| 1416 |
bool PatchROM(void) |
| 1417 |
{ |
| 1418 |
// Print ROM info |
| 1419 |
D(bug("ROM Info:\n")); |
| 1420 |
D(bug("Checksum: %08lx\n", ReadMacInt32(ROMBaseMac))); |
| 1421 |
D(bug("Version: %04x\n", ROMVersion)); |
| 1422 |
D(bug("Sub Version: %04x\n", ReadMacInt16(ROMBaseMac + 18))); |
| 1423 |
|
| 1424 |
// Patch ROM depending on version |
| 1425 |
switch (ROMVersion) { |
| 1426 |
case ROM_VERSION_CLASSIC: |
| 1427 |
if (!patch_rom_classic()) |
| 1428 |
return false; |
| 1429 |
break; |
| 1430 |
case ROM_VERSION_32: |
| 1431 |
if (!patch_rom_32()) |
| 1432 |
return false; |
| 1433 |
break; |
| 1434 |
default: |
| 1435 |
return false; |
| 1436 |
} |
| 1437 |
|
| 1438 |
#ifdef M68K_BREAKPOINT |
| 1439 |
// Install breakpoint |
| 1440 |
uint16 *wp = (uint16 *)(ROMBaseHost + M68K_BREAKPOINT); |
| 1441 |
*wp = htons(M68K_EMUL_BREAK); |
| 1442 |
#endif |
| 1443 |
|
| 1444 |
// Clear caches as we loaded and patched code |
| 1445 |
FlushCodeCache(ROMBaseHost, ROMSize); |
| 1446 |
return true; |
| 1447 |
} |
