| 1 |
/* |
| 2 |
* slot_rom.cpp - Slot declaration ROM |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2002 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 |
/* |
| 22 |
* SEE ALSO |
| 23 |
* Inside Macintosh: Devices, chapter 2 "Slot Manager" |
| 24 |
* Designing Cards and Drivers for the Macintosh Family, Second Edition |
| 25 |
*/ |
| 26 |
|
| 27 |
#include <stdio.h> |
| 28 |
#include <string.h> |
| 29 |
|
| 30 |
#include "sysdeps.h" |
| 31 |
#include "cpu_emulation.h" |
| 32 |
#include "main.h" |
| 33 |
#include "video.h" |
| 34 |
#include "emul_op.h" |
| 35 |
#include "version.h" |
| 36 |
#include "slot_rom.h" |
| 37 |
|
| 38 |
|
| 39 |
// Temporary buffer for slot ROM |
| 40 |
static uint8 srom[4096]; |
| 41 |
|
| 42 |
// Index in srom |
| 43 |
static uint32 p; |
| 44 |
|
| 45 |
// Length of slot ROM |
| 46 |
static int slot_rom_size = 0; |
| 47 |
|
| 48 |
|
| 49 |
/* |
| 50 |
* Construct slot declaration ROM and copy it into the Mac ROM (must be called after VideoInit()) |
| 51 |
*/ |
| 52 |
|
| 53 |
static void Offs(uint8 type, uint32 ptr) |
| 54 |
{ |
| 55 |
uint32 offs = ptr - p; |
| 56 |
srom[p++] = type; |
| 57 |
srom[p++] = offs >> 16; |
| 58 |
srom[p++] = offs >> 8; |
| 59 |
srom[p++] = offs; |
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} |
| 61 |
|
| 62 |
static void Rsrc(uint8 type, uint32 data) |
| 63 |
{ |
| 64 |
srom[p++] = type; |
| 65 |
srom[p++] = data >> 16; |
| 66 |
srom[p++] = data >> 8; |
| 67 |
srom[p++] = data; |
| 68 |
} |
| 69 |
|
| 70 |
static void EndOfList(void) |
| 71 |
{ |
| 72 |
srom[p++] = 0xff; |
| 73 |
srom[p++] = 0; |
| 74 |
srom[p++] = 0; |
| 75 |
srom[p++] = 0; |
| 76 |
} |
| 77 |
|
| 78 |
static void Long(uint32 data) |
| 79 |
{ |
| 80 |
srom[p++] = data >> 24; |
| 81 |
srom[p++] = data >> 16; |
| 82 |
srom[p++] = data >> 8; |
| 83 |
srom[p++] = data; |
| 84 |
} |
| 85 |
|
| 86 |
static void Word(uint16 data) |
| 87 |
{ |
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srom[p++] = data >> 8; |
| 89 |
srom[p++] = data; |
| 90 |
} |
| 91 |
|
| 92 |
static void String(char *str) |
| 93 |
{ |
| 94 |
while ((srom[p++] = *str++) != 0) ; |
| 95 |
if (p & 1) |
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srom[p++] = 0; |
| 97 |
} |
| 98 |
|
| 99 |
static void PString(char *str) |
| 100 |
{ |
| 101 |
srom[p++] = strlen(str); |
| 102 |
while ((srom[p++] = *str++) != 0) ; |
| 103 |
p--; |
| 104 |
if (p & 1) |
| 105 |
srom[p++] = 0; |
| 106 |
} |
| 107 |
|
| 108 |
static uint32 VModeParms(const monitor_desc &m, video_depth depth) |
| 109 |
{ |
| 110 |
const video_mode &mode = m.get_current_mode(); |
| 111 |
|
| 112 |
uint32 ret = p; |
| 113 |
Long(50); // Length |
| 114 |
Long(0); // Base offset |
| 115 |
Word(m.get_bytes_per_row(depth, mode.resolution_id)); |
| 116 |
Word(0); // Bounds |
| 117 |
Word(0); |
| 118 |
Word(mode.y); |
| 119 |
Word(mode.x); |
| 120 |
Word(0); // Version |
| 121 |
Word(0); // Pack type |
| 122 |
Long(0); // Pack size |
| 123 |
Long(0x00480000); // HRes |
| 124 |
Long(0x00480000); // VRes |
| 125 |
switch (depth) { |
| 126 |
case VDEPTH_1BIT: |
| 127 |
Word(0); // Pixel type (indirect) |
| 128 |
Word(1); // Pixel size |
| 129 |
Word(1); // CmpCount |
| 130 |
Word(1); // CmpSize |
| 131 |
break; |
| 132 |
case VDEPTH_2BIT: |
| 133 |
Word(0); // Pixel type (indirect) |
| 134 |
Word(2); // Pixel size |
| 135 |
Word(1); // CmpCount |
| 136 |
Word(2); // CmpSize |
| 137 |
break; |
| 138 |
case VDEPTH_4BIT: |
| 139 |
Word(0); // Pixel type (indirect) |
| 140 |
Word(4); // Pixel size |
| 141 |
Word(1); // CmpCount |
| 142 |
Word(4); // CmpSize |
| 143 |
break; |
| 144 |
case VDEPTH_8BIT: |
| 145 |
Word(0); // Pixel type (indirect) |
| 146 |
Word(8); // Pixel size |
| 147 |
Word(1); // CmpCount |
| 148 |
Word(8); // CmpSize |
| 149 |
break; |
| 150 |
case VDEPTH_16BIT: |
| 151 |
Word(16); // Pixel type (direct) |
| 152 |
Word(16); // Pixel size |
| 153 |
Word(3); // CmpCount |
| 154 |
Word(5); // CmpSize |
| 155 |
break; |
| 156 |
case VDEPTH_32BIT: |
| 157 |
Word(16); // Pixel type (direct) |
| 158 |
Word(32); // Pixel size |
| 159 |
Word(3); // CmpCount |
| 160 |
Word(8); // CmpSize |
| 161 |
break; |
| 162 |
} |
| 163 |
Long(0); // Plane size |
| 164 |
Long(0); // Reserved |
| 165 |
return ret; |
| 166 |
} |
| 167 |
|
| 168 |
static uint32 VModeDesc(uint32 params, bool direct) |
| 169 |
{ |
| 170 |
uint32 ret = p; |
| 171 |
Offs(0x01, params); // Video parameters |
| 172 |
Rsrc(0x03, 1); // Page count |
| 173 |
Rsrc(0x04, direct ? 2 : 0); // Device type |
| 174 |
EndOfList(); |
| 175 |
return ret; |
| 176 |
} |
| 177 |
|
| 178 |
static uint32 VMonitor(const monitor_desc &m, uint32 videoType, uint32 videoName, uint32 vidDrvrDir, uint32 gammaDir) |
| 179 |
{ |
| 180 |
uint32 minorBase, minorLength; |
| 181 |
uint32 vidModeParms1, vidModeParms2, vidModeParms4, vidModeParms8, vidModeParms16, vidModeParms32; |
| 182 |
uint32 vidMode1, vidMode2, vidMode4, vidMode8, vidMode16, vidMode32; |
| 183 |
uint32 ret; |
| 184 |
|
| 185 |
minorBase = p; |
| 186 |
Long(m.get_mac_frame_base()); // Frame buffer base |
| 187 |
minorLength = p; |
| 188 |
Long(0); // Frame buffer size (unspecified) |
| 189 |
|
| 190 |
vidModeParms1 = VModeParms(m, VDEPTH_1BIT); |
| 191 |
vidModeParms2 = VModeParms(m, VDEPTH_2BIT); |
| 192 |
vidModeParms4 = VModeParms(m, VDEPTH_4BIT); |
| 193 |
vidModeParms8 = VModeParms(m, VDEPTH_8BIT); |
| 194 |
vidModeParms16 = VModeParms(m, VDEPTH_16BIT); |
| 195 |
vidModeParms32 = VModeParms(m, VDEPTH_32BIT); |
| 196 |
|
| 197 |
vidMode1 = VModeDesc(vidModeParms1, false); |
| 198 |
vidMode2 = VModeDesc(vidModeParms2, false); |
| 199 |
vidMode4 = VModeDesc(vidModeParms4, false); |
| 200 |
vidMode8 = VModeDesc(vidModeParms8, false); |
| 201 |
vidMode16 = VModeDesc(vidModeParms16, true); |
| 202 |
vidMode32 = VModeDesc(vidModeParms32, true); |
| 203 |
|
| 204 |
ret = p; |
| 205 |
Offs(0x01, videoType); // Video type descriptor |
| 206 |
Offs(0x02, videoName); // Driver name |
| 207 |
Offs(0x04, vidDrvrDir); // Driver directory |
| 208 |
Rsrc(0x08, 0x4232); // Hardware device ID ('B2') |
| 209 |
Offs(0x0a, minorBase); // Frame buffer base |
| 210 |
Offs(0x0b, minorLength); // Frame buffer length |
| 211 |
Offs(0x40, gammaDir); // Gamma directory |
| 212 |
Rsrc(0x7d, 6); // Video attributes: Default to color, built-in |
| 213 |
if (m.has_depth(VDEPTH_1BIT)) |
| 214 |
Offs(m.depth_to_apple_mode(VDEPTH_1BIT), vidMode1); // Video mode parameters for 1 bit |
| 215 |
if (m.has_depth(VDEPTH_2BIT)) |
| 216 |
Offs(m.depth_to_apple_mode(VDEPTH_2BIT), vidMode2); // Video mode parameters for 2 bit |
| 217 |
if (m.has_depth(VDEPTH_4BIT)) |
| 218 |
Offs(m.depth_to_apple_mode(VDEPTH_4BIT), vidMode4); // Video mode parameters for 4 bit |
| 219 |
if (m.has_depth(VDEPTH_8BIT)) |
| 220 |
Offs(m.depth_to_apple_mode(VDEPTH_8BIT), vidMode8); // Video mode parameters for 8 bit |
| 221 |
if (m.has_depth(VDEPTH_16BIT)) |
| 222 |
Offs(m.depth_to_apple_mode(VDEPTH_16BIT), vidMode16); // Video mode parameters for 16 bit |
| 223 |
if (m.has_depth(VDEPTH_32BIT)) |
| 224 |
Offs(m.depth_to_apple_mode(VDEPTH_32BIT), vidMode32); // Video mode parameters for 32 bit |
| 225 |
EndOfList(); |
| 226 |
return ret; |
| 227 |
} |
| 228 |
|
| 229 |
bool InstallSlotROM(void) |
| 230 |
{ |
| 231 |
uint32 boardType, boardName, vendorID, revLevel, partNum, date; |
| 232 |
uint32 vendorInfo, sRsrcBoard; |
| 233 |
|
| 234 |
uint32 videoType, videoName, videoDrvr, vidDrvrDir; |
| 235 |
uint32 defaultGamma, gammaDir; |
| 236 |
|
| 237 |
uint32 cpuType, cpuName, cpuMajor, cpuMinor, sRsrcCPU; |
| 238 |
|
| 239 |
uint32 etherType, etherName, etherDrvr, etherDrvrDir, sRsrcEther; |
| 240 |
|
| 241 |
uint32 sRsrcDir; |
| 242 |
|
| 243 |
vector<monitor_desc *>::const_iterator m, mend = VideoMonitors.end(); |
| 244 |
vector<uint32> sRsrcVideo; |
| 245 |
|
| 246 |
char str[256]; |
| 247 |
int i; |
| 248 |
p = 0; |
| 249 |
|
| 250 |
// Board sResource |
| 251 |
boardType = p; // Literals |
| 252 |
Word(1); Word(0); Word(0); Word(0); // Board sResource |
| 253 |
boardName = p; |
| 254 |
String("Basilisk II Slot ROM"); |
| 255 |
vendorID = p; |
| 256 |
String("Christian Bauer"); |
| 257 |
revLevel = p; |
| 258 |
sprintf(str, "V%d.%d", VERSION_MAJOR, VERSION_MINOR); |
| 259 |
String(str); |
| 260 |
partNum = p; |
| 261 |
String("BasiliskII"); |
| 262 |
date = p; |
| 263 |
String(__DATE__); |
| 264 |
|
| 265 |
vendorInfo = p; // Vendor Info |
| 266 |
Offs(0x01, vendorID); // Vendor ID |
| 267 |
Offs(0x03, revLevel); // Revision level |
| 268 |
Offs(0x04, partNum); // Part number |
| 269 |
Offs(0x05, date); // ROM build date |
| 270 |
EndOfList(); |
| 271 |
|
| 272 |
sRsrcBoard = p; |
| 273 |
Offs(0x01, boardType); // Board descriptor |
| 274 |
Offs(0x02, boardName); // Board name |
| 275 |
Rsrc(0x20, 0x4232); // Board ID ('B2') |
| 276 |
Offs(0x24, vendorInfo); // Vendor Info |
| 277 |
EndOfList(); |
| 278 |
|
| 279 |
videoType = p; |
| 280 |
Word(3); Word(1); Word(1); Word(0x4232); // Display Video Apple 'B2' |
| 281 |
videoName = p; |
| 282 |
String("Display_Video_Apple_Basilisk"); |
| 283 |
|
| 284 |
videoDrvr = p; // Video driver |
| 285 |
Long(0x72); // Length |
| 286 |
Word(0x4c00); Word(0); Word(0); Word(0); |
| 287 |
Word(0x32); // Open offset |
| 288 |
Word(0x36); // Prime offset |
| 289 |
Word(0x3a); // Control offset |
| 290 |
Word(0x46); // Status offset |
| 291 |
Word(0x6c); // Close offset |
| 292 |
PString(".Display_Video_Apple_Basilisk"); |
| 293 |
Word(1); // Driver version |
| 294 |
Word(M68K_EMUL_OP_VIDEO_OPEN); // Open() |
| 295 |
Word(0x4e75); |
| 296 |
Word(0x70ff); // Prime() |
| 297 |
Word(0x600e); |
| 298 |
Word(M68K_EMUL_OP_VIDEO_CONTROL); // Control() |
| 299 |
Word(0x0c68); Word(0x0001); Word(0x001a); |
| 300 |
Word(0x6604); |
| 301 |
Word(0x4e75); |
| 302 |
Word(M68K_EMUL_OP_VIDEO_STATUS); // Status() |
| 303 |
Word(0x3228); Word(0x0006); // IOReturn |
| 304 |
Word(0x0801); Word(0x0009); |
| 305 |
Word(0x670c); |
| 306 |
Word(0x4a40); |
| 307 |
Word(0x6f02); |
| 308 |
Word(0x4240); |
| 309 |
Word(0x3140); Word(0x0010); |
| 310 |
Word(0x4e75); |
| 311 |
Word(0x4a40); |
| 312 |
Word(0x6f04); |
| 313 |
Word(0x4240); |
| 314 |
Word(0x4e75); |
| 315 |
Word(0x2f38); Word(0x08fc); |
| 316 |
Word(0x4e75); |
| 317 |
Word(0x70e8); // Close() |
| 318 |
Word(0x4e75); |
| 319 |
|
| 320 |
vidDrvrDir = p; // Driver directory |
| 321 |
Offs(0x02, videoDrvr); // sMacOS68020 |
| 322 |
EndOfList(); |
| 323 |
|
| 324 |
defaultGamma = p; // Gamma table |
| 325 |
Long(38 + 0x100); // Length |
| 326 |
Word(0x2000); // Resource ID |
| 327 |
String("Mac HiRes Std Gamma"); |
| 328 |
Word(0); // Version |
| 329 |
Word(0); // Type |
| 330 |
Word(0); // FormulaSize |
| 331 |
Word(1); // ChanCnt |
| 332 |
Word(0x0100); // DataCnt |
| 333 |
Word(8); // ChanWidth |
| 334 |
Long(0x0005090B); Long(0x0E101315); Long(0x17191B1D); Long(0x1E202224); |
| 335 |
Long(0x2527282A); Long(0x2C2D2F30); Long(0x31333436); Long(0x37383A3B); |
| 336 |
Long(0x3C3E3F40); Long(0x42434445); Long(0x4748494A); Long(0x4B4D4E4F); |
| 337 |
Long(0x50515254); Long(0x55565758); Long(0x595A5B5C); Long(0x5E5F6061); |
| 338 |
Long(0x62636465); Long(0x66676869); Long(0x6A6B6C6D); Long(0x6E6F7071); |
| 339 |
Long(0x72737475); Long(0x76777879); Long(0x7A7B7C7D); Long(0x7E7F8081); |
| 340 |
Long(0x81828384); Long(0x85868788); Long(0x898A8B8C); Long(0x8C8D8E8F); |
| 341 |
Long(0x90919293); Long(0x94959596); Long(0x9798999A); Long(0x9B9B9C9D); |
| 342 |
Long(0x9E9FA0A1); Long(0xA1A2A3A4); Long(0xA5A6A6A7); Long(0xA8A9AAAB); |
| 343 |
Long(0xABACADAE); Long(0xAFB0B0B1); Long(0xB2B3B4B4); Long(0xB5B6B7B8); |
| 344 |
Long(0xB8B9BABB); Long(0xBCBCBDBE); Long(0xBFC0C0C1); Long(0xC2C3C3C4); |
| 345 |
Long(0xC5C6C7C7); Long(0xC8C9CACA); Long(0xCBCCCDCD); Long(0xCECFD0D0); |
| 346 |
Long(0xD1D2D3D3); Long(0xD4D5D6D6); Long(0xD7D8D9D9); Long(0xDADBDCDC); |
| 347 |
Long(0xDDDEDFDF); Long(0xE0E1E1E2); Long(0xE3E4E4E5); Long(0xE6E7E7E8); |
| 348 |
Long(0xE9E9EAEB); Long(0xECECEDEE); Long(0xEEEFF0F1); Long(0xF1F2F3F3); |
| 349 |
Long(0xF4F5F5F6); Long(0xF7F8F8F9); Long(0xFAFAFBFC); Long(0xFCFDFEFF); |
| 350 |
|
| 351 |
gammaDir = p; // Gamma directory |
| 352 |
Offs(0x80, defaultGamma); |
| 353 |
EndOfList(); |
| 354 |
|
| 355 |
for (m = VideoMonitors.begin(); m != mend; ++m) |
| 356 |
sRsrcVideo.push_back(VMonitor(**m, videoType, videoName, vidDrvrDir, gammaDir)); |
| 357 |
|
| 358 |
// CPU sResource |
| 359 |
cpuType = p; // Literals |
| 360 |
Word(10); Word(3); Word(0); Word(24); // CPU 68020 |
| 361 |
cpuName = p; |
| 362 |
String("CPU_68020"); |
| 363 |
cpuMajor = p; |
| 364 |
Long(0); Long(0x7fffffff); |
| 365 |
cpuMinor = p; |
| 366 |
Long(0xf0800000); Long(0xf0ffffff); |
| 367 |
|
| 368 |
sRsrcCPU = p; |
| 369 |
Offs(0x01, cpuType); // Type descriptor |
| 370 |
Offs(0x02, cpuName); // CPU name |
| 371 |
Offs(0x81, cpuMajor); // Major RAM space |
| 372 |
Offs(0x82, cpuMinor); // Minor RAM space |
| 373 |
EndOfList(); |
| 374 |
|
| 375 |
// Ethernet sResource |
| 376 |
etherType = p; // Literals |
| 377 |
Word(4); Word(1); Word(1); Word(0x4232); // Network Ethernet Apple 'B2' |
| 378 |
etherName = p; |
| 379 |
String("Network_Ethernet_Apple_BasiliskII"); |
| 380 |
|
| 381 |
etherDrvr = p; // Video driver |
| 382 |
Long(0x88); // Length |
| 383 |
Word(0x4400); Word(0); Word(0); Word(0); |
| 384 |
Word(0x4a); // Open offset |
| 385 |
Word(0x4e); // Prime offset |
| 386 |
Word(0x52); // Control offset |
| 387 |
Word(0x4e); // Status offset |
| 388 |
Word(0x82); // Close offset |
| 389 |
PString(".ENET"); |
| 390 |
Word(0x0111); Word(0x8000); // Driver version |
| 391 |
Word(0); |
| 392 |
PString("1.1.1 "); |
| 393 |
PString("Basilisk II Ethernet Network Driver"); |
| 394 |
Word(M68K_EMUL_OP_ETHER_OPEN); // Open() |
| 395 |
Word(0x4e75); |
| 396 |
Word(0x70ef); // Prime()/Status() |
| 397 |
Word(0x600c); |
| 398 |
Word(M68K_EMUL_OP_ETHER_CONTROL); // Control() |
| 399 |
Word(0x0c68); Word(0x0001); Word(0x001a); |
| 400 |
Word(0x6602); |
| 401 |
Word(0x4e75); |
| 402 |
Word(0x3228); Word(0x0006); // IOReturn |
| 403 |
Word(0x0801); Word(0x0009); |
| 404 |
Word(0x670c); |
| 405 |
Word(0x4a40); |
| 406 |
Word(0x6f02); |
| 407 |
Word(0x4240); |
| 408 |
Word(0x3140); Word(0x0010); |
| 409 |
Word(0x4e75); |
| 410 |
Word(0x4a40); |
| 411 |
Word(0x6f04); |
| 412 |
Word(0x4240); |
| 413 |
Word(0x4e75); |
| 414 |
Word(0x2f38); Word(0x08fc); |
| 415 |
Word(0x4e75); |
| 416 |
Word(0x70e8); // Close() |
| 417 |
Word(0x4e75); |
| 418 |
|
| 419 |
etherDrvrDir = p; // Driver directory |
| 420 |
Offs(0x02, etherDrvr); // sMacOS68020 |
| 421 |
EndOfList(); |
| 422 |
|
| 423 |
sRsrcEther = p; |
| 424 |
Offs(0x01, etherType); // Type descriptor |
| 425 |
Offs(0x02, etherName); // Driver name |
| 426 |
Offs(0x04, etherDrvrDir); // Driver directory |
| 427 |
Rsrc(0x07, 2); // Flags: OpenAtStart |
| 428 |
Rsrc(0x08, 0x4232); // Hardware device ID ('B2') |
| 429 |
EndOfList(); |
| 430 |
|
| 431 |
// sResource directory |
| 432 |
sRsrcDir = p; |
| 433 |
Offs(0x01, sRsrcBoard); |
| 434 |
for (m = VideoMonitors.begin(), i = 0; m != mend; ++m, ++i) |
| 435 |
Offs((*m)->get_slot_id(), sRsrcVideo[i]); |
| 436 |
Offs(0xf0, sRsrcCPU); |
| 437 |
Offs(0xf1, sRsrcEther); |
| 438 |
EndOfList(); |
| 439 |
|
| 440 |
// Format/header block |
| 441 |
Offs(0, sRsrcDir); // sResource directory |
| 442 |
Long(p + 16); // Length of declaration data |
| 443 |
Long(0); // CRC (calculated later) |
| 444 |
Word(0x0101); // Rev. level, format |
| 445 |
Long(0x5a932bc7); // Test pattern |
| 446 |
Word(0x000f); // Byte lanes |
| 447 |
|
| 448 |
// Copy slot ROM to Mac ROM |
| 449 |
slot_rom_size = p; |
| 450 |
memcpy(ROMBaseHost + ROMSize - slot_rom_size, srom, slot_rom_size); |
| 451 |
|
| 452 |
// Calculate checksum |
| 453 |
ChecksumSlotROM(); |
| 454 |
return true; |
| 455 |
} |
| 456 |
|
| 457 |
/* |
| 458 |
* Calculate slot ROM checksum (in-place) |
| 459 |
*/ |
| 460 |
|
| 461 |
void ChecksumSlotROM(void) |
| 462 |
{ |
| 463 |
// Calculate CRC |
| 464 |
uint8 *p = ROMBaseHost + ROMSize - slot_rom_size; |
| 465 |
p[slot_rom_size - 12] = 0; |
| 466 |
p[slot_rom_size - 11] = 0; |
| 467 |
p[slot_rom_size - 10] = 0; |
| 468 |
p[slot_rom_size - 9] = 0; |
| 469 |
uint32 crc = 0; |
| 470 |
for (int i=0; i<slot_rom_size; i++) { |
| 471 |
crc = (crc << 1) | (crc >> 31); |
| 472 |
crc += p[i]; |
| 473 |
} |
| 474 |
p[slot_rom_size - 12] = crc >> 24; |
| 475 |
p[slot_rom_size - 11] = crc >> 16; |
| 476 |
p[slot_rom_size - 10] = crc >> 8; |
| 477 |
p[slot_rom_size - 9] = crc; |
| 478 |
} |
