mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 07:17:45 -04:00
Finish migrating to new mem handling. Make carthw db external.
Still need to fix asm and protection emulation. git-svn-id: file:///home/notaz/opt/svn/PicoDrive@769 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
af37bca858
commit
45f2f245f5
30 changed files with 948 additions and 1027 deletions
395
pico/cart.c
395
pico/cart.c
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@ -15,7 +15,8 @@
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static const char *rom_exts[] = { "bin", "gen", "smd", "iso", "sms", "gg", "sg" };
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void (*PicoCartUnloadHook)(void) = NULL;
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void (*PicoCartUnloadHook)(void);
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void (*PicoCartMemSetup)(void);
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void (*PicoCartLoadProgressCB)(int percent) = NULL;
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void (*PicoCDLoadProgressCB)(const char *fname, int percent) = NULL; // handled in Pico/cd/cd_file.c
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@ -565,7 +566,7 @@ int PicoCartInsert(unsigned char *rom,unsigned int romsize)
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PicoAHW &= PAHW_MCD|PAHW_SMS;
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PicoMemResetHooks();
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PicoCartMemSetup = NULL;
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PicoDmaHook = NULL;
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PicoResetHook = NULL;
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PicoLineHook = NULL;
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@ -586,6 +587,9 @@ int PicoCartInsert(unsigned char *rom,unsigned int romsize)
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case PAHW_SMS: PicoMemSetupMS(); break;
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}
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if (PicoCartMemSetup != NULL)
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PicoCartMemSetup();
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if (PicoAHW & PAHW_SMS)
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PicoPowerMS();
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else
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@ -611,178 +615,311 @@ void PicoCartUnload(void)
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static int rom_strcmp(int rom_offset, const char *s1)
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{
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int i, len = strlen(s1);
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const char *s_rom = (const char *)Pico.rom + rom_offset;
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const char *s_rom = (const char *)Pico.rom;
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for (i = 0; i < len; i++)
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if (s1[i] != s_rom[i^1])
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if (s1[i] != s_rom[(i + rom_offset) ^ 1])
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return 1;
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return 0;
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}
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static int name_cmp(const char *name)
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{
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return rom_strcmp(0x150, name);
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}
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static unsigned int rom_read32(int addr)
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{
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unsigned short *m = (unsigned short *)(Pico.rom + addr);
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return (m[0] << 16) | m[1];
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}
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static char *sskip(char *s)
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{
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while (*s && isspace_(*s))
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s++;
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return s;
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}
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static void rstrip(char *s)
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{
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char *p;
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for (p = s + strlen(s) - 1; p >= s; p--)
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if (isspace_(*p))
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*p = 0;
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}
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static int is_expr(const char *expr, char **pr)
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{
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int len = strlen(expr);
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char *p = *pr;
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if (strncmp(expr, p, len) != 0)
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return 0;
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p = sskip(p + len);
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if (*p != '=')
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return 0; // wrong or malformed
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*pr = sskip(p + 1);
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return 1;
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}
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static void parse_carthw(int *fill_sram)
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{
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int line = 0, any_checks_passed = 0, skip_sect = 0;
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char buff[256], *p, *r;
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FILE *f;
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f = fopen("carthw.cfg", "r");
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if (f == NULL) {
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elprintf(EL_STATUS, "couldn't open carthw.txt!");
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return;
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}
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while ((p = fgets(buff, sizeof(buff), f)))
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{
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line++;
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p = sskip(p);
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if (*p == 0 || *p == '#')
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continue;
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if (*p == '[') {
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any_checks_passed = 0;
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skip_sect = 0;
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continue;
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}
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if (skip_sect)
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continue;
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/* look for checks */
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if (is_expr("check_str", &p))
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{
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int offs;
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offs = strtoul(p, &r, 0);
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if (offs < 0 || offs > Pico.romsize) {
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elprintf(EL_STATUS, "carthw:%d: check_str offs out of range: %d\n", line, offs);
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goto bad;
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}
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p = sskip(r);
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if (*p != ',')
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goto bad;
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p = sskip(p + 1);
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if (*p != '"')
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goto bad;
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p++;
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r = strchr(p, '"');
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if (r == NULL)
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goto bad;
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*r = 0;
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if (rom_strcmp(offs, p) == 0)
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any_checks_passed = 1;
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else
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skip_sect = 1;
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continue;
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}
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else if (is_expr("check_size_gt", &p))
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{
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int size;
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size = strtoul(p, &r, 0);
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if (r == p || size < 0)
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goto bad;
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if (Pico.romsize > size)
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any_checks_passed = 1;
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else
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skip_sect = 1;
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continue;
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}
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else if (is_expr("check_csum", &p))
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{
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int csum;
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csum = strtoul(p, &r, 0);
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if (r == p || (csum & 0xffff0000))
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goto bad;
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if (csum == (rom_read32(0x18c) & 0xffff))
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any_checks_passed = 1;
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else
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skip_sect = 1;
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continue;
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}
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/* now time for actions */
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if (is_expr("hw", &p)) {
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if (!any_checks_passed)
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goto no_checks;
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rstrip(p);
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if (strcmp(p, "svp") == 0)
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PicoSVPStartup();
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else if (strcmp(p, "pico") == 0)
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PicoInitPico();
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else if (strcmp(p, "x_in_1_mapper") == 0)
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carthw_Xin1_startup();
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else if (strcmp(p, "realtec_mapper") == 0)
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carthw_realtec_startup();
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else if (strcmp(p, "radica_mapper") == 0)
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carthw_radica_startup();
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else {
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elprintf(EL_STATUS, "carthw:%d: unsupported mapper: %s", line, p);
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skip_sect = 1;
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}
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continue;
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}
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if (is_expr("sram_range", &p)) {
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int start, end;
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if (!any_checks_passed)
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goto no_checks;
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rstrip(p);
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start = strtoul(p, &r, 0);
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if (r == p)
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goto bad;
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p = sskip(r);
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if (*p != ',')
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goto bad;
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p = sskip(p + 1);
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end = strtoul(p, &r, 0);
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if (r == p)
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goto bad;
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if (((start | end) & 0xff000000) || start > end) {
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elprintf(EL_STATUS, "carthw:%d: bad sram_range: %08x - %08x", line, start, end);
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goto bad_nomsg;
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}
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SRam.start = start;
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SRam.end = end;
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continue;
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}
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else if (is_expr("prop", &p)) {
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if (!any_checks_passed)
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goto no_checks;
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rstrip(p);
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if (strcmp(p, "no_sram") == 0)
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SRam.flags &= ~SRF_ENABLED;
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else if (strcmp(p, "no_eeprom") == 0)
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SRam.flags &= ~SRF_EEPROM;
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else if (strcmp(p, "filled_sram") == 0)
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*fill_sram = 1;
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else {
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elprintf(EL_STATUS, "carthw:%d: unsupported prop: %s", line, p);
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goto bad_nomsg;
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}
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continue;
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}
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else if (is_expr("eeprom_type", &p)) {
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int type;
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if (!any_checks_passed)
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goto no_checks;
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rstrip(p);
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type = strtoul(p, &r, 0);
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if (r == p || type < 0)
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goto bad;
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SRam.eeprom_type = type;
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SRam.flags |= SRF_EEPROM;
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continue;
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}
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else if (is_expr("eeprom_lines", &p)) {
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int scl, sda_in, sda_out;
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if (!any_checks_passed)
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goto no_checks;
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rstrip(p);
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scl = strtoul(p, &r, 0);
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if (r == p || scl < 0 || scl > 15)
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goto bad;
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p = sskip(r);
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if (*p++ != ',')
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goto bad;
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sda_in = strtoul(p, &r, 0);
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if (r == p || sda_in < 0 || sda_in > 15)
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goto bad;
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p = sskip(r);
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if (*p++ != ',')
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goto bad;
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sda_out = strtoul(p, &r, 0);
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if (r == p || sda_out < 0 || sda_out > 15)
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goto bad;
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SRam.eeprom_bit_cl = scl;
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SRam.eeprom_bit_in = sda_in;
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SRam.eeprom_bit_out= sda_out;
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continue;
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}
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bad:
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elprintf(EL_STATUS, "carthw:%d: unrecognized expression: %s", line, buff);
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bad_nomsg:
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skip_sect = 1;
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continue;
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no_checks:
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elprintf(EL_STATUS, "carthw:%d: command without any checks before it: %s", line, buff);
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skip_sect = 1;
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continue;
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}
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fclose(f);
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}
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/*
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* various cart-specific things, which can't be handled by generic code
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* (maybe I should start using CRC for this stuff?)
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*/
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static void PicoCartDetect(void)
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{
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int sram_size = 0, csum;
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Pico.m.sram_status = 0;
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int fill_sram = 0, csum;
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csum = rom_read32(0x18c) & 0xffff;
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memset(&SRam, 0, sizeof(SRam));
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if (Pico.rom[0x1B1] == 'R' && Pico.rom[0x1B0] == 'A')
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{
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SRam.start = rom_read32(0x1B4) & ~0xff000001; // align
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SRam.end = (rom_read32(0x1B8) & ~0xff000000) | 1;
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if (Pico.rom[0x1B2] & 0x40)
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{
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// EEPROM
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SRam.start = rom_read32(0x1B4) & ~1; // zero address is used for clock by some games
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SRam.end = rom_read32(0x1B8);
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sram_size = 0x2000;
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Pico.m.sram_status |= SRS_EEPROM;
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} else {
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// normal SRAM
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SRam.start = rom_read32(0x1B4) & ~0xff;
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SRam.end = rom_read32(0x1B8) | 1;
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sram_size = SRam.end - SRam.start + 1;
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}
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SRam.start &= ~0xff000000;
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SRam.end &= ~0xff000000;
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Pico.m.sram_status |= SRS_DETECTED;
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SRam.flags |= SRF_EEPROM;
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SRam.flags |= SRF_ENABLED;
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}
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if (sram_size <= 0)
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if (SRam.end == 0 || SRam.start > SRam.end)
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{
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// some games may have bad headers, like S&K and Sonic3
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// note: majority games use 0x200000 as starting address, but there are some which
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// use something else (0x300000 by HardBall '95). Luckily they have good headers.
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SRam.start = 0x200000;
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SRam.end = 0x203FFF;
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sram_size = 0x004000;
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SRam.flags |= SRF_ENABLED;
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}
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// this game actually doesn't have SRAM, but some weird protection
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if (rom_strcmp(0x120, "PUGGSY") == 0)
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{
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SRam.start = SRam.end = sram_size = 0;
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}
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if (sram_size)
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{
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SRam.data = (unsigned char *) calloc(sram_size, 1);
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if (SRam.data == NULL) return;
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}
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SRam.changed = 0;
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// set EEPROM defaults, in case it gets detected
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SRam.eeprom_type = 0; // 7bit (24C01)
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SRam.eeprom_abits = 3; // eeprom access must be odd addr for: bit0 ~ cl, bit1 ~ in
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SRam.eeprom_bit_cl = 1;
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SRam.eeprom_bit_in = 0;
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SRam.eeprom_bit_out= 0;
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// some known EEPROM data (thanks to EkeEke)
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if (name_cmp("COLLEGE SLAM") == 0 ||
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name_cmp("FRANK THOMAS BIGHURT BASEBAL") == 0)
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parse_carthw(&fill_sram);
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if (SRam.flags & SRF_ENABLED)
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{
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SRam.eeprom_type = 3;
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SRam.eeprom_abits = 2;
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SRam.eeprom_bit_cl = 0;
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}
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else if (name_cmp("NBA JAM TOURNAMENT EDITION") == 0 ||
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name_cmp("NFL QUARTERBACK CLUB") == 0)
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{
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SRam.eeprom_type = 2;
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SRam.eeprom_abits = 2;
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SRam.eeprom_bit_cl = 0;
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}
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else if (name_cmp("NBA JAM") == 0)
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{
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SRam.eeprom_type = 2;
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SRam.eeprom_bit_out = 1;
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SRam.eeprom_abits = 0;
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}
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else if (name_cmp("NHLPA HOCKEY '93") == 0 ||
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name_cmp("NHLPA Hockey '93") == 0 ||
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name_cmp("RINGS OF POWER") == 0)
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{
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SRam.start = SRam.end = 0x200000;
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Pico.m.sram_status = SRS_DETECTED|SRS_EEPROM;
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SRam.eeprom_abits = 0;
|
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SRam.eeprom_bit_cl = 6;
|
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SRam.eeprom_bit_in = 7;
|
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SRam.eeprom_bit_out= 7;
|
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}
|
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else if ( name_cmp("MICRO MACHINES II") == 0 ||
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(name_cmp(" ") == 0 && // Micro Machines {Turbo Tournament '96, Military - It's a Blast!}
|
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(csum == 0x165e || csum == 0x168b || csum == 0xCEE0 || csum == 0x2C41)))
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{
|
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SRam.start = 0x300000;
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SRam.end = 0x380001;
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Pico.m.sram_status = SRS_DETECTED|SRS_EEPROM;
|
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SRam.eeprom_type = 2;
|
||||
SRam.eeprom_abits = 0;
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SRam.eeprom_bit_cl = 1;
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SRam.eeprom_bit_in = 0;
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SRam.eeprom_bit_out= 7;
|
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if (SRam.flags & SRF_EEPROM)
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SRam.size = 0x2000;
|
||||
else
|
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SRam.size = SRam.end - SRam.start + 1;
|
||||
|
||||
SRam.data = calloc(SRam.size, 1);
|
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if (SRam.data == NULL)
|
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SRam.flags &= ~SRF_ENABLED;
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||||
|
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if (SRam.eeprom_type == 1) // 1 == 0 in PD EEPROM code
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||||
SRam.eeprom_type = 0;
|
||||
}
|
||||
|
||||
// SVP detection
|
||||
else if (name_cmp("Virtua Racing") == 0 ||
|
||||
name_cmp("VIRTUA RACING") == 0)
|
||||
if ((SRam.flags & SRF_ENABLED) && fill_sram)
|
||||
{
|
||||
PicoSVPStartup();
|
||||
}
|
||||
|
||||
// Pico
|
||||
else if (rom_strcmp(0x100, "SEGA PICO") == 0 ||
|
||||
rom_strcmp(0x100, "IMA IKUNOUJYUKU") == 0) // what is that supposed to mean?
|
||||
{
|
||||
PicoInitPico();
|
||||
}
|
||||
|
||||
// Detect 12-in-1 mapper
|
||||
else if ((name_cmp("ROBOCOP 3") == 0 && Pico.romsize == 0x200000) ||
|
||||
(rom_strcmp(0x160, "FLICKY") == 0 && Pico.romsize >= 0x200000) ||
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(name_cmp(" SHOVE IT!") == 0 && Pico.romsize >= 0x200000) ||
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(name_cmp("MS PACMAN") == 0 && Pico.romsize >= 0x200000) || // bad dump?
|
||||
(name_cmp("ALIEN 3") == 0 && Pico.romsize == 0x200000))
|
||||
{
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||||
carthw_12in1_startup();
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||||
}
|
||||
|
||||
// Realtec mapper
|
||||
else if (Pico.romsize == 512*1024 && (
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||||
rom_strcmp(0x94, "THE EARTH DEFEND") == 0 ||
|
||||
rom_strcmp(0xfe, "WISEGAME 11-03-1993") == 0 || // Funny World
|
||||
rom_strcmp(0x95, "MALLET LEGEND ") == 0)) // Whac-A-Critter
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||||
{
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||||
carthw_realtec_startup();
|
||||
}
|
||||
|
||||
// Radica mapper
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||||
else if (name_cmp("KID CHAMELEON") == 0 && Pico.romsize > 0x100000)
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||||
{
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||||
carthw_radica_startup();
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||||
}
|
||||
|
||||
// Some games malfunction if SRAM is not filled with 0xff
|
||||
if (name_cmp("DINO DINI'S SOCCER") == 0 ||
|
||||
name_cmp("MICRO MACHINES II") == 0)
|
||||
{
|
||||
memset(SRam.data, 0xff, sram_size);
|
||||
elprintf(EL_STATUS, "SRAM fill");
|
||||
memset(SRam.data, 0xff, SRam.size);
|
||||
}
|
||||
|
||||
// Unusual region 'code'
|
||||
if (rom_strcmp(0x1f0, "EUROPE") == 0 || rom_strcmp(0x1f0, "Europe") == 0)
|
||||
*(int *) (Pico.rom+0x1f0) = 0x20204520;
|
||||
*(int *) (Pico.rom + 0x1f0) = 0x20204520;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue