///////////////////////////////////////////////////////////////////////// // $Id$ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001-2017 The Bochs Project // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA // ///////////////////////////////////////////////////////////////////////// #ifndef BX_IODEV_VGACORE_H #define BX_IODEV_VGACORE_H // Make colour #define MAKE_COLOUR(red, red_shiftfrom, red_shiftto, red_mask, \ green, green_shiftfrom, green_shiftto, green_mask, \ blue, blue_shiftfrom, blue_shiftto, blue_mask) \ ( \ ((((red_shiftto) > (red_shiftfrom)) ? \ (red) << ((red_shiftto) - (red_shiftfrom)) : \ (red) >> ((red_shiftfrom) - (red_shiftto))) & \ (red_mask)) | \ ((((green_shiftto) > (green_shiftfrom)) ? \ (green) << ((green_shiftto) - (green_shiftfrom)) : \ (green) >> ((green_shiftfrom) - (green_shiftto))) & \ (green_mask)) | \ ((((blue_shiftto) > (blue_shiftfrom)) ? \ (blue) << ((blue_shiftto) - (blue_shiftfrom)) : \ (blue) >> ((blue_shiftfrom) - (blue_shiftto))) & \ (blue_mask)) \ ) #define X_TILESIZE 16 #define Y_TILESIZE 24 #if BX_SUPPORT_PCI class bx_nonvga_device_c : public bx_pci_device_c { public: virtual void redraw_area(unsigned x0, unsigned y0, unsigned width, unsigned height) {} virtual void refresh_display(void *this_ptr, bx_bool redraw) {} virtual void update(void) {} }; #endif class bx_vgacore_c : public bx_vga_stub_c { public: bx_vgacore_c(); virtual ~bx_vgacore_c(); virtual void init(void); virtual void reset(unsigned type) {} static bx_bool mem_read_handler(bx_phy_address addr, unsigned len, void *data, void *param); static bx_bool mem_write_handler(bx_phy_address addr, unsigned len, void *data, void *param); virtual Bit8u mem_read(bx_phy_address addr); virtual void mem_write(bx_phy_address addr, Bit8u value); virtual void refresh_display(void *this_ptr, bx_bool redraw) {} virtual void set_override(bx_bool enabled, void *dev); virtual void register_state(bx_list_c *parent); virtual void after_restore_state(void); #if BX_DEBUGGER virtual void debug_dump(void); #endif virtual void redraw_area(unsigned x0, unsigned y0, unsigned width, unsigned height); virtual void get_text_snapshot(Bit8u **text_snapshot, unsigned *txHeight, unsigned *txWidth); virtual void init_vga_extension(void) {} protected: void init_standard_vga(void); void init_gui(void); void init_iohandlers(bx_read_handler_t f_read, bx_write_handler_t f_write); void init_systemtimer(bx_timer_handler_t f_timer, param_event_handler f_param); static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len); static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len); Bit32u read(Bit32u address, unsigned io_len); void write(Bit32u address, Bit32u value, unsigned io_len, bx_bool no_log); Bit8u get_vga_pixel(Bit16u x, Bit16u y, Bit16u saddr, Bit16u lc, bx_bool bs, Bit8u **plane); void update(void); void determine_screen_dimensions(unsigned *piHeight, unsigned *piWidth); void calculate_retrace_timing(void); bx_bool skip_update(void); struct { struct { bx_bool color_emulation; // 1=color emulation, base address = 3Dx // 0=mono emulation, base address = 3Bx bx_bool enable_ram; // enable CPU access to video memory if set Bit8u clock_select; // 0=25Mhz 1=28Mhz bx_bool select_high_bank; // when in odd/even modes, select // high 64k bank if set bx_bool horiz_sync_pol; // bit6: negative if set bx_bool vert_sync_pol; // bit7: negative if set // bit7,bit6 represent number of lines on display: // 0 = reserved // 1 = 400 lines // 2 = 350 lines // 3 - 480 lines } misc_output; struct { Bit8u address; Bit8u reg[0x19]; bx_bool write_protect; } CRTC; struct { bx_bool flip_flop; /* 0 = address, 1 = data-write */ unsigned address; /* register number */ bx_bool video_enabled; Bit8u palette_reg[16]; Bit8u overscan_color; Bit8u color_plane_enable; Bit8u horiz_pel_panning; Bit8u color_select; struct { bx_bool graphics_alpha; bx_bool display_type; bx_bool enable_line_graphics; bx_bool blink_intensity; bx_bool pixel_panning_compat; bx_bool pixel_clock_select; bx_bool internal_palette_size; } mode_ctrl; } attribute_ctrl; struct { Bit8u write_data_register; Bit8u write_data_cycle; /* 0, 1, 2 */ Bit8u read_data_register; Bit8u read_data_cycle; /* 0, 1, 2 */ Bit8u dac_state; struct { Bit8u red; Bit8u green; Bit8u blue; } data[256]; Bit8u mask; } pel; struct { Bit8u index; Bit8u set_reset; Bit8u enable_set_reset; Bit8u color_compare; Bit8u data_rotate; Bit8u raster_op; Bit8u read_map_select; Bit8u write_mode; Bit32u read_mode; bx_bool odd_even; bx_bool chain_odd_even; Bit8u shift_reg; bx_bool graphics_alpha; Bit8u memory_mapping; /* 0 = use A0000-BFFFF * 1 = use A0000-AFFFF EGA/VGA graphics modes * 2 = use B0000-B7FFF Monochrome modes * 3 = use B8000-BFFFF CGA modes */ Bit8u color_dont_care; Bit8u bitmask; Bit8u latch[4]; } graphics_ctrl; struct { Bit8u index; Bit8u map_mask; bx_bool reset1; bx_bool reset2; Bit8u reg1; Bit8u char_map_select; bx_bool extended_mem; bx_bool odd_even; bx_bool chain_four; bx_bool clear_screen; } sequencer; bx_bool vga_enabled; bx_bool vga_mem_updated; unsigned line_offset; unsigned line_compare; unsigned vertical_display_end; unsigned blink_counter; bx_bool *vga_tile_updated; Bit8u *memory; Bit32u memsize; Bit8u text_snapshot[128 * 1024]; // current text snapshot Bit8u tile[X_TILESIZE * Y_TILESIZE * 4]; /**< Currently allocates the tile as large as needed. */ Bit16u charmap_address; bx_bool x_dotclockdiv2; bx_bool y_doublescan; // h/v retrace timing Bit32u htotal_usec; Bit32u hbstart_usec; Bit32u hbend_usec; Bit32u vtotal_usec; Bit32u vblank_usec; Bit32u vrstart_usec; Bit32u vrend_usec; // shift values for extensions Bit8u plane_shift; Bit32u plane_offset; Bit8u dac_shift; // last active resolution and bpp Bit16u last_xres; Bit16u last_yres; Bit8u last_bpp; Bit8u last_fw; Bit8u last_fh; // maximum resolution and number of tiles Bit16u max_xres; Bit16u max_yres; Bit16u num_x_tiles; Bit16u num_y_tiles; // vga override mode bx_bool vga_override; #if BX_SUPPORT_PCI bx_nonvga_device_c *nvgadev; #endif } s; // state information int timer_id; bx_bool realtime; bx_bool extension_init; bx_bool pci_enabled; }; #endif