Casio Prizm/FX Development & Programming :: RE: pWabbit: A Prizm port of WabbitEmu

Author: souvik1997
Posted: 11 Nov 2012 09:57:28 am (GMT -5)

I've been trying to load a TI-82 ROM, and it seems like it's running until 0038h but then it just stops. Also, loading ROMs over 128 KB results in an error.

Code:

BOOL rom_load_minimal(LPCALC lpCalc, char* FileName, int model, char* version) 
{
          

if (lpCalc == NULL) {
      return FALSE;
   }
      
   switch (model) {
           case TI_81:
              calc_init_81(lpCalc, version);
              if (!loadFileToRAM(FileName, (void*)lpCalc->cpu.mem_c->flash, lpCalc->cpu.mem_c->flash_size)) return FALSE;
              break;
           case TI_82:
           case TI_83:
              calc_init_83(lpCalc, version);
              if (!loadFileToRAM(FileName, (void*)lpCalc->cpu.mem_c->flash, lpCalc->cpu.mem_c->flash_size)) return FALSE;
              break;
           case TI_85:
           case TI_86:
              calc_init_86(lpCalc);
              if (!loadFileToRAM(FileName, (void*)lpCalc->cpu.mem_c->flash, lpCalc->cpu.mem_c->flash_size)) return FALSE;
              break;           
           default:
              return FALSE;
   }

   lpCalc->active = TRUE;
   memcpy(lpCalc->rom_version, version, sizeof(lpCalc->rom_version));
   //memset(lpCalc->rom_version,0xA5,sizeof(lpCalc->rom_version)); //fill with junk data. Not sure if the rom version is actually used anywhere, though

   strcpy(lpCalc->rom_path, FileName);
   return TRUE;

}

Code:

BOOL loadFileToRAM(unsigned char* f, void* buffer, unsigned int length)
{
        unsigned short pFile[256];
        int hFile;

        Bfile_StrToName_ncpy(pFile, f, strlen(f)); 
        hFile = Bfile_OpenFile_OS(pFile, READWRITE); // Get handle

        if(hFile < 0) // Check if it opened
        {
          int size = 256;
          if(Bfile_CreateEntry_OS(pFile, CREATEMODE_FILE, &size) >= 0) // Did it create?
          {
            hFile = Bfile_OpenFile_OS(pFile, READWRITE);
            Bfile_ReadFile_OS(hFile, buffer, length, 1);
            if(hFile < 0) // Still failing?
            {
              Bfile_CloseFile_OS(hFile);
              return FALSE;
            }
          }
          else
          {
            Bfile_CloseFile_OS(hFile);
            return FALSE;
          }
        }
        Bfile_CloseFile_OS(hFile);
   return TRUE;
}