Mercurial > repos > blastem
diff blastem.c @ 764:bb60259e8edf
Initial work on ROM database
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Thu, 02 Jul 2015 19:19:06 -0700 |
parents | cee1275f5d08 |
children | dc54387ee1cd |
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--- a/blastem.c Sun Jun 28 18:44:11 2015 -0700 +++ b/blastem.c Thu Jul 02 19:19:06 2015 -0700 @@ -13,6 +13,7 @@ #include "gdb_remote.h" #include "gst.h" #include "util.h" +#include "romdb.h" #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -64,13 +65,21 @@ while (filesize > 0) { fread(block, 1, SMD_BLOCK_SIZE, f); for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) { - *(dst++) = *high << 8 | *low; + *(dst++) = *low << 8 | *high; } filesize -= SMD_BLOCK_SIZE; } return 1; } +void byteswap_rom() +{ + for(unsigned short * cur = cart; cur - cart < CARTRIDGE_WORDS; ++cur) + { + *cur = (*cur >> 8) | (*cur << 8); + } +} + int load_rom(char * filename) { uint8_t header[10]; @@ -103,11 +112,6 @@ } fread(cart, 2, filesize/2, f); fclose(f); - for(unsigned short * cur = cart; cur - cart < (filesize/2); ++cur) - { - *cur = (*cur >> 8) | (*cur << 8); - } - //TODO: Mirror ROM return 1; } @@ -1065,37 +1069,18 @@ } } -char title[64]; +char *title; #define TITLE_START 0x150 #define TITLE_END (TITLE_START+48) -void update_title() +void update_title(char *rom_name) { - uint16_t *last = cart + TITLE_END/2 - 1; - while(last > cart + TITLE_START/2 && *last == 0x2020) - { - last--; + if (title) { + free(title); + title = NULL; } - uint16_t *start = cart + TITLE_START/2; - char *cur = title; - char last_char = ' '; - for (; start != last; start++) - { - if ((last_char != ' ' || (*start >> 8) != ' ') && (*start >> 8) < 0x80) { - *(cur++) = *start >> 8; - last_char = *start >> 8; - } - if (last_char != ' ' || (*start & 0xFF) != ' ' && (*start & 0xFF) < 0x80) { - *(cur++) = *start; - last_char = *start & 0xFF; - } - } - *(cur++) = *start >> 8; - if ((*start & 0xFF) != ' ') { - *(cur++) = *start; - } - strcpy(cur, " - BlastEm"); + title = alloc_concat(rom_name, " - BlastEm"); } #define REGION_START 0x1F0 @@ -1271,12 +1256,15 @@ fputs("You must specify a ROM filename!\n", stderr); return 1; } + tern_node *rom_db = load_rom_db(); + rom_info info = configure_rom(rom_db, cart); + byteswap_rom(); if (force_version) { version_reg = force_version; } else { detect_region(); } - update_title(); + update_title(info.name); int def_width = 0; char *config_width = tern_find_ptr(config, "videowidth"); if (config_width) {