extern int fd;
extern shared_info *si;
extern area_id shared_info_area;
extern area_id dma_cmd_buf_area;
extern area_id regs_area;
extern vuint32 *regs;
extern display_mode *my_mode_list;
extern area_id my_mode_list_area;
extern int accelerantIsClone;

extern nv_get_set_pci nv_pci_access;
extern nv_in_out_isa nv_isa_access;

typedef status_t (*crtc_interrupt_enable)(bool);
typedef status_t (*crtc_update_fifo)(void);
typedef status_t (*crtc_validate_timing)(uint16*, uint16*, uint16*, uint16*, uint16*, uint16*, uint16*, uint16*);
typedef status_t (*crtc_set_timing)(display_mode);
typedef status_t (*crtc_depth)(int);
typedef status_t (*crtc_dpms)(bool, bool, bool, bool);
typedef status_t (*crtc_set_display_pitch)(void);
typedef status_t (*crtc_set_display_start)(uint32, uint8);
typedef status_t (*crtc_cursor_init)(void);
typedef status_t (*crtc_cursor_show)(void);
typedef status_t (*crtc_cursor_hide)(void);
typedef status_t (*crtc_cursor_define)(uint8*, uint8*);
typedef status_t (*crtc_cursor_position)(uint16, uint16);
typedef status_t (*crtc_stop_tvout)(void);
typedef status_t (*crtc_start_tvout)(void);

typedef status_t (*dac_mode)(int, float);
typedef status_t (*dac_palette)(uint8[256], uint8[256], uint8[256]);
typedef status_t (*dac_set_pix_pll)(display_mode);
typedef status_t (*dac_pix_pll_find)(display_mode, float*, uint8*, uint8*, uint8*, uint8);

extern crtc_interrupt_enable    head1_interrupt_enable;
extern crtc_update_fifo         head1_update_fifo;
extern crtc_validate_timing     head1_validate_timing;
extern crtc_set_timing          head1_set_timing;
extern crtc_depth                               head1_depth;
extern crtc_dpms                                head1_dpms;
extern crtc_set_display_pitch   head1_set_display_pitch;
extern crtc_set_display_start   head1_set_display_start;
extern crtc_cursor_init         head1_cursor_init;
extern crtc_cursor_show         head1_cursor_show;
extern crtc_cursor_hide         head1_cursor_hide;
extern crtc_cursor_define               head1_cursor_define;
extern crtc_cursor_position     head1_cursor_position;
extern crtc_stop_tvout                  head1_stop_tvout;
extern crtc_start_tvout         head1_start_tvout;

extern crtc_interrupt_enable    head2_interrupt_enable;
extern crtc_update_fifo         head2_update_fifo;
extern crtc_validate_timing     head2_validate_timing;
extern crtc_set_timing                  head2_set_timing;
extern crtc_depth                               head2_depth;
extern crtc_dpms                                head2_dpms;
extern crtc_set_display_pitch   head2_set_display_pitch;
extern crtc_set_display_start   head2_set_display_start;
extern crtc_cursor_init         head2_cursor_init;
extern crtc_cursor_show         head2_cursor_show;
extern crtc_cursor_hide         head2_cursor_hide;
extern crtc_cursor_define               head2_cursor_define;
extern crtc_cursor_position     head2_cursor_position;
extern crtc_stop_tvout                  head2_stop_tvout;
extern crtc_start_tvout         head2_start_tvout;

extern dac_mode                         head1_mode;
extern dac_palette                              head1_palette;
extern dac_set_pix_pll                  head1_set_pix_pll;
extern dac_pix_pll_find         head1_pix_pll_find;

extern dac_mode                         head2_mode;
extern dac_palette                              head2_palette;
extern dac_set_pix_pll                  head2_set_pix_pll;
extern dac_pix_pll_find         head2_pix_pll_find;