4 #include "types.h" // u8
5 #include "farptr.h" // struct segoff_s
12 #define VGAREG_ACTL_ADDRESS 0x3c0
13 #define VGAREG_ACTL_WRITE_DATA 0x3c0
14 #define VGAREG_ACTL_READ_DATA 0x3c1
16 #define VGAREG_INPUT_STATUS 0x3c2
17 #define VGAREG_WRITE_MISC_OUTPUT 0x3c2
18 #define VGAREG_VIDEO_ENABLE 0x3c3
19 #define VGAREG_SEQU_ADDRESS 0x3c4
20 #define VGAREG_SEQU_DATA 0x3c5
22 #define VGAREG_PEL_MASK 0x3c6
23 #define VGAREG_DAC_STATE 0x3c7
24 #define VGAREG_DAC_READ_ADDRESS 0x3c7
25 #define VGAREG_DAC_WRITE_ADDRESS 0x3c8
26 #define VGAREG_DAC_DATA 0x3c9
28 #define VGAREG_READ_FEATURE_CTL 0x3ca
29 #define VGAREG_READ_MISC_OUTPUT 0x3cc
31 #define VGAREG_GRDC_ADDRESS 0x3ce
32 #define VGAREG_GRDC_DATA 0x3cf
34 #define VGAREG_MDA_CRTC_ADDRESS 0x3b4
35 #define VGAREG_MDA_CRTC_DATA 0x3b5
36 #define VGAREG_VGA_CRTC_ADDRESS 0x3d4
37 #define VGAREG_VGA_CRTC_DATA 0x3d5
39 #define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba
40 #define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da
41 #define VGAREG_ACTL_RESET 0x3da
43 #define VGAREG_MDA_MODECTL 0x3b8
44 #define VGAREG_CGA_MODECTL 0x3d8
45 #define VGAREG_CGA_PALETTE 0x3d9
48 #define SEG_GRAPH 0xA000
49 #define SEG_CTEXT 0xB800
50 #define SEG_MTEXT 0xB000
53 * Tables of default values for each mode
57 #define CTEXT (0x00 | TEXT)
58 #define MTEXT (0x01 | TEXT)
70 #define SCREEN_IO_START(x,y,p) (((((x)*(y)) | 0x00ff) + 1) * (p))
71 #define SCREEN_MEM_START(x,y,p) SCREEN_IO_START(((x)*2),(y),(p))
73 /* standard BIOS Video Parameter Table */
88 struct VideoParam_s
*vparam
;
89 u8 memmodel
; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */
97 struct saveVideoHardware
{
112 struct saveBDAstate
{
127 struct segoff_s font0
;
128 struct segoff_s font1
;
131 struct saveDACcolors
{
140 struct vgamode_s
*find_vga_entry(u8 mode
);
141 extern u16 video_save_pointer_table
[];
142 extern struct VideoParam_s video_param_table
[];
143 extern u8 static_functionality
[];
146 extern u8 vgafont8
[];
147 extern u8 vgafont14
[];
148 extern u8 vgafont16
[];
149 extern u8 vgafont14alt
[];
150 extern u8 vgafont16alt
[];
154 u8 car
, attr
, use_attr
;
161 void clear_screen(struct vgamode_s
*vmode_g
);
162 void vgafb_scroll(int nblines
, int attr
163 , struct cursorpos ul
, struct cursorpos lr
);
164 void vgafb_write_char(struct cursorpos cp
, struct carattr ca
);
165 struct carattr
vgafb_read_char(struct cursorpos cp
);
166 void vgafb_write_pixel(u8 color
, u16 x
, u16 y
);
167 u8
vgafb_read_pixel(u16 x
, u16 y
);
168 void vgafb_load_font(u16 seg
, void *src_far
, u16 count
169 , u16 start
, u8 destflags
, u8 fontsize
);
172 void vgahw_screen_disable(void);
173 void vgahw_screen_enable(void);
174 void vgahw_set_border_color(u8 color
);
175 void vgahw_set_overscan_border_color(u8 color
);
176 u8
vgahw_get_overscan_border_color(void);
177 void vgahw_set_palette(u8 palid
);
178 void vgahw_set_single_palette_reg(u8 reg
, u8 val
);
179 u8
vgahw_get_single_palette_reg(u8 reg
);
180 void vgahw_set_all_palette_reg(u16 seg
, u8
*data_far
);
181 void vgahw_get_all_palette_reg(u16 seg
, u8
*data_far
);
182 void vgahw_toggle_intensity(u8 flag
);
183 void vgahw_select_video_dac_color_page(u8 flag
, u8 data
);
184 void vgahw_read_video_dac_state(u8
*pmode
, u8
*curpage
);
185 void vgahw_set_dac_regs(u16 seg
, u8
*data_far
, u8 start
, int count
);
186 void vgahw_get_dac_regs(u16 seg
, u8
*data_far
, u8 start
, int count
);
187 void vgahw_set_pel_mask(u8 val
);
188 u8
vgahw_get_pel_mask(void);
189 void vgahw_save_dac_state(u16 seg
, struct saveDACcolors
*info
);
190 void vgahw_restore_dac_state(u16 seg
, struct saveDACcolors
*info
);
191 void vgahw_sequ_write(u8 index
, u8 value
);
192 void vgahw_grdc_write(u8 index
, u8 value
);
193 void vgahw_set_text_block_specifier(u8 spec
);
194 void get_font_access(void);
195 void release_font_access(void);
196 void vgahw_set_cursor_shape(u8 start
, u8 end
);
197 void vgahw_set_active_page(u16 address
);
198 void vgahw_set_cursor_pos(u16 address
);
199 void vgahw_set_scan_lines(u8 lines
);
200 u16
vgahw_get_vde(void);
201 void vgahw_save_state(u16 seg
, struct saveVideoHardware
*info
);
202 void vgahw_restore_state(u16 seg
, struct saveVideoHardware
*info
);
203 void vgahw_set_mode(struct VideoParam_s
*vparam_g
);
204 void vgahw_enable_video_addressing(u8 disable
);
205 void vgahw_init(void);
208 void cirrus_set_video_mode(u8 mode
);
209 void cirrus_init(void);
211 // vbe.c -- not implemented yet.
212 #define VBE_DISPI_DISABLED 0x00
213 void dispi_set_enable(int enable
);
215 int vbe_has_vbe_display(void);
217 #endif // vgatables.h