extern DRIVER_INIT( megadriv_c2 ); extern DRIVER_INIT( megadrie ); extern DRIVER_INIT( megadriv ); extern DRIVER_INIT( megadrij ); extern DRIVER_INIT( _32x ); INPUT_PORTS_EXTERN(megadriv); INPUT_PORTS_EXTERN(aladbl); INPUT_PORTS_EXTERN(megadri6); INPUT_PORTS_EXTERN(ssf2ghw); INPUT_PORTS_EXTERN(megdsvp); MACHINE_DRIVER_EXTERN( megdsvppal ); MACHINE_DRIVER_EXTERN(megadriv); MACHINE_DRIVER_EXTERN(megadpal); MACHINE_DRIVER_EXTERN(megdsvp); MACHINE_DRIVER_EXTERN( genesis_32x ); MACHINE_DRIVER_EXTERN( genesis_32x_pal ); MACHINE_DRIVER_EXTERN( genesis_scd ); MACHINE_DRIVER_EXTERN( genesis_32x_scd ); extern UINT16* megadriv_backupram; extern int megadriv_backupram_length; extern UINT16* megadrive_ram; extern UINT8 megatech_bios_port_cc_dc_r(running_machine *machine, int offset, int ctrl); extern void megadriv_stop_scanline_timer(void); void megatech_set_megadrive_z80_as_megadrive_z80(running_machine *machine); extern READ8_HANDLER (megatech_sms_ioport_dc_r); extern READ8_HANDLER (megatech_sms_ioport_dd_r); extern READ16_HANDLER( megadriv_vdp_r ); extern WRITE16_HANDLER( megadriv_vdp_w ); MACHINE_RESET( megadriv ); VIDEO_START( megadriv ); VIDEO_UPDATE( megadriv ); VIDEO_EOF( megadriv ); /* Needed to create external input handlers (see e.g. MESS) */ extern UINT8 (*megadrive_io_read_data_port_ptr)(running_machine *machine, int offset); extern void (*megadrive_io_write_data_port_ptr)(running_machine *machine, int offset, UINT16 data); extern UINT8 megadrive_io_data_regs[3]; extern UINT8 megadrive_io_ctrl_regs[3]; extern UINT16* megadrive_vdp_palette_lookup; extern UINT16* megadrive_vdp_palette_lookup_sprite; // for C2 extern UINT16* megadrive_vdp_palette_lookup_shadow; extern UINT16* megadrive_vdp_palette_lookup_highlight; extern int segac2_bg_pal_lookup[4]; extern int segac2_sp_pal_lookup[4]; extern int genvdp_use_cram; extern int genesis_has_z80; extern int genesis_always_irq6; extern int genesis_other_hacks;