minix/include/sys/video.h

   1
   2 #ifndef _SYS_VIDEO_H
   3 #define _SYS_VIDEO_H 1
   4
   5 /* Definitions used by the console driver. */
   6 #define MONO_BASE    0xB0000L   /* base of mono video memory */
   7 #define COLOR_BASE   0xB8000L   /* base of color video memory */
   8 #define MONO_SIZE     0x1000    /* 4K mono video memory */
   9 #define COLOR_SIZE    0x4000    /* 16K color video memory */
  10 #define EGA_SIZE      0x8000    /* EGA & VGA have at least 32K */
  11 #define BLANK_COLOR   0x0700    /* determines cursor color on blank screen */
  12 #define SCROLL_UP          0    /* scroll forward */
  13 #define SCROLL_DOWN        1    /* scroll backward */
  14 #define CONS_RAM_WORDS    80    /* video ram buffer size */
  15 #define MAX_ESC_PARMS      4    /* number of escape sequence params allowed */
  16
  17 /* Constants relating to the controller chips. */
  18 #define M_6845         0x3B4    /* port for 6845 mono */
  19 #define C_6845         0x3D4    /* port for 6845 color */
  20 #define INDEX              0    /* 6845's index register */
  21 #define DATA               1    /* 6845's data register */
  22 #define STATUS             6    /* 6845's status register */
  23 #define VID_ORG           12    /* 6845's origin register */
  24 #define CURSOR            14    /* 6845's cursor register */
  25
  26 /* Beeper. */
  27 #define BEEP_FREQ     0x0533    /* value to put into timer to set beep freq */
  28 #define B_TIME             3    /* length of CTRL-G beep is ticks */
  29
  30 /* definitions used for font management */
  31 #define GA_SEQUENCER_INDEX      0x3C4
  32 #define GA_SEQUENCER_DATA       0x3C5
  33 #define GA_GRAPHICS_INDEX       0x3CE
  34 #define GA_GRAPHICS_DATA        0x3CF
  35 #define GA_VIDEO_ADDRESS        0xA0000L
  36 #define GA_FONT_SIZE            8192
  37
  38 #endif