Mercurial > repos > blastem

comparison romdb.c @ 1195:b8ba086b96ed

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improved parsing of cartridge region header
author Michael Pavone <pavone@retrodev.com>
date Tue, 24 Jan 2017 21:26:46 -0800
parents 22e87b739ad6
children 53fc7efdfdab
comparison
equal deleted inserted replaced
1194:1ad0ec7e3939 1195:b8ba086b96ed
439 return ret; 439 return ret;
440 } 440 }
441 } 441 }
442 } 442 }
443 443
444 char *region_chars = "UB4JEA"; 444 char *region_chars = "JUEW";
445 uint8_t region_bits[] = {REGION_U, REGION_U, REGION_U, REGION_J, REGION_E, REGION_E}; 445 uint8_t region_bits[] = {REGION_J, REGION_U, REGION_E, REGION_J|REGION_U|REGION_E};
446 446
447 uint8_t translate_region_char(uint8_t c) 447 uint8_t translate_region_char(uint8_t c)
448 { 448 {
449 for (int i = 0; i < sizeof(region_bits); i++) 449 for (int i = 0; i < sizeof(region_bits); i++)
450 { 450 {
451 if (c == region_chars[i]) { 451 if (c == region_chars[i]) {
452 return region_bits[i]; 452 return region_bits[i];
453 } 453 }
454 } 454 }
455 return 0; 455 uint8_t bin_region = 0;
456 if (c >= '0' && c <= '9') {
457 bin_region = c - '0';
458 } else if (c >= 'A' && c <= 'F') {
459 bin_region = c - 'A' + 0xA;
460 } else if (c >= 'a' && c <= 'f') {
461 bin_region = c - 'a' + 0xA;
462 }
463 uint8_t ret = 0;
464 if (bin_region & 8) {
465 ret |= REGION_E;
466 }
467 if (bin_region & 4) {
468 ret |= REGION_U;
469 }
470 if (bin_region & 1) {
471 ret |= REGION_J;
472 }
473 return ret;
456 } 474 }
457 475
458 uint8_t get_header_regions(uint8_t *rom) 476 uint8_t get_header_regions(uint8_t *rom)
459 { 477 {
460 uint8_t regions = 0; 478 uint8_t regions = 0;