| 331 | } |
| 332 | |
| 333 | u8 MemoryCardProtocol::PS1Write(u8 data) |
| 334 | { |
| 335 | MC_LOG.WriteLn("%s", __FUNCTION__); |
| 336 | bool sendAck = true; |
| 337 | u8 ret = 0; |
| 338 | |
| 339 | switch (ps1McState.currentByte) |
| 340 | { |
| 341 | case 2: |
| 342 | ret = 0x5a; |
| 343 | break; |
| 344 | case 3: |
| 345 | ret = 0x5d; |
| 346 | break; |
| 347 | case 4: |
| 348 | ps1McState.sectorAddrMSB = data; |
| 349 | ret = 0x00; |
| 350 | break; |
| 351 | case 5: |
| 352 | ps1McState.sectorAddrLSB = data; |
| 353 | ret = 0x00; |
| 354 | RecalculatePS1Addr(); |
| 355 | break; |
| 356 | case 134: |
| 357 | ps1McState.expectedChecksum = data; |
| 358 | ret = 0; |
| 359 | break; |
| 360 | case 135: |
| 361 | ret = 0x5c; |
| 362 | break; |
| 363 | case 136: |
| 364 | ret = 0x5d; |
| 365 | break; |
| 366 | case 137: |
| 367 | if (!mcd->goodSector) |
| 368 | { |
| 369 | ret = 0xff; |
| 370 | } |
| 371 | else if (ps1McState.expectedChecksum != ps1McState.checksum) |
| 372 | { |
| 373 | ret = 0x4e; |
| 374 | } |
| 375 | else |
| 376 | { |
| 377 | mcd->Write(ps1McState.buf.data(), ps1McState.buf.size()); |
| 378 | ret = 0x47; |
| 379 | // Clear the "directory unread" bit of the flag byte. Per no$psx, this is cleared |
| 380 | // on writes, not reads. |
| 381 | mcd->FLAG &= 0x07; |
| 382 | } |
| 383 | |
| 384 | sendAck = false; |
| 385 | break; |
| 386 | case 6: |
| 387 | ps1McState.checksum = ps1McState.sectorAddrMSB ^ ps1McState.sectorAddrLSB; |
| 388 | [[fallthrough]]; |
| 389 | default: |
| 390 | ps1McState.buf[ps1McState.currentByte - 6] = data; |