1.1 --- a/src/dreamcast.c	Wed Oct 31 11:53:35 2007 +0000
     1.2 +++ b/src/dreamcast.c	Thu Nov 22 11:10:15 2007 +0000
     1.3 @@ -18,6 +18,7 @@
     1.4   */
     1.5  
     1.6  #include <errno.h>
     1.7 +#include <glib.h>
     1.8  #include "dream.h"
     1.9  #include "config.h"
    1.10  #include "mem.h"
    1.11 @@ -30,13 +31,14 @@
    1.12  /**
    1.13   * Current state of the DC virtual machine
    1.14   */
    1.15 -#define STATE_UNINIT 0
    1.16 -#define STATE_RUNNING 1
    1.17 -#define STATE_STOPPING 2
    1.18 -#define STATE_STOPPED 3 
    1.19 -static volatile int dreamcast_state = STATE_UNINIT;
    1.20 +typedef enum { STATE_UNINIT=0, STATE_RUNNING, 
    1.21 +	       STATE_STOPPING, STATE_STOPPED } dreamcast_state_t;
    1.22 +
    1.23 +static volatile dreamcast_state_t dreamcast_state = STATE_UNINIT;
    1.24 +static gboolean dreamcast_has_bios = FALSE;
    1.25 +static gchar *dreamcast_program_name = NULL;
    1.26 +static sh4addr_t dreamcast_entry_point = 0xA0000000;
    1.27  static uint32_t timeslice_length = DEFAULT_TIMESLICE_LENGTH;
    1.28 -const char *dreamcast_config = "DEFAULT";
    1.29  
    1.30  #define MAX_MODULES 32
    1.31  static int num_modules = 0;
    1.32 @@ -67,8 +69,9 @@
    1.33      mem_create_ram_region( 0x00800000, 2 MB, MEM_REGION_AUDIO );
    1.34      mem_create_ram_region( 0x00703000, 8 KB, MEM_REGION_AUDIO_SCRATCH );
    1.35      mem_create_ram_region( 0x05000000, 8 MB, MEM_REGION_VIDEO );
    1.36 -    mem_load_rom( lxdream_get_config_value(CONFIG_BIOS_PATH),
    1.37 -		  0x00000000, 0x00200000, 0x89f2b1a1, MEM_REGION_BIOS );
    1.38 +    dreamcast_has_bios = mem_load_rom( lxdream_get_config_value(CONFIG_BIOS_PATH),
    1.39 +				       0x00000000, 0x00200000, 0x89f2b1a1,
    1.40 +				       MEM_REGION_BIOS );
    1.41      mem_create_ram_region( 0x00200000, 0x00020000, MEM_REGION_FLASH );
    1.42      mem_load_block( lxdream_get_config_value(CONFIG_FLASH_PATH),
    1.43  		    0x00200000, 0x00020000 );
    1.44 @@ -84,8 +87,9 @@
    1.45  
    1.46  void dreamcast_config_changed(void)
    1.47  {
    1.48 -    mem_load_rom( lxdream_get_config_value(CONFIG_BIOS_PATH),
    1.49 -		  0x00000000, 0x00200000, 0x89f2b1a1, MEM_REGION_BIOS );
    1.50 +    dreamcast_has_bios = mem_load_rom( lxdream_get_config_value(CONFIG_BIOS_PATH),
    1.51 +				       0x00000000, 0x00200000, 0x89f2b1a1, 
    1.52 +				       MEM_REGION_BIOS );
    1.53      mem_load_block( lxdream_get_config_value(CONFIG_FLASH_PATH),
    1.54  		    0x00200000, 0x00020000 );
    1.55  }
    1.56 @@ -207,11 +211,32 @@
    1.57      dreamcast_save_flash();
    1.58  }
    1.59  
    1.60 +void dreamcast_program_loaded( const gchar *name, sh4addr_t entry_point )
    1.61 +{
    1.62 +    if( dreamcast_program_name != NULL ) {
    1.63 +        g_free(dreamcast_program_name);
    1.64 +    }
    1.65 +    dreamcast_program_name = g_strdup(name);
    1.66 +    dreamcast_entry_point = entry_point;
    1.67 +    sh4_set_pc(entry_point);
    1.68 +    if( !dreamcast_has_bios ) {
    1.69 +        bios_install();
    1.70 +    }
    1.71 +    dcload_install();
    1.72 +    gui_update_state();
    1.73 +}
    1.74 +
    1.75  gboolean dreamcast_is_running( void )
    1.76  {
    1.77      return dreamcast_state == STATE_RUNNING;
    1.78  }
    1.79  
    1.80 +gboolean dreamcast_can_run(void)
    1.81 +{
    1.82 +    return dreamcast_state != STATE_UNINIT &&
    1.83 +      (dreamcast_has_bios || dreamcast_program_name != NULL);
    1.84 +}
    1.85 +
    1.86  /********************************* Save States *****************************/
    1.87  
    1.88  struct save_state_header {