40 lines
1.7 KiB
C
40 lines
1.7 KiB
C
|
|
||
|
|
#ifndef _SYS_VIDEO_H
|
||
|
|
#define _SYS_VIDEO_H 1
|
||
|
|
|
||
|
|
/* Definitions used by the console driver. */
|
||
|
|
#define MONO_BASE 0xB0000L /* base of mono video memory */
|
||
|
|
#define COLOR_BASE 0xB8000L /* base of color video memory */
|
||
|
|
#define MONO_SIZE 0x1000 /* 4K mono video memory */
|
||
|
|
#define COLOR_SIZE 0x4000 /* 16K color video memory */
|
||
|
|
#define EGA_SIZE 0x8000 /* EGA & VGA have at least 32K */
|
||
|
|
#define BLANK_COLOR 0x0700 /* determines cursor color on blank screen */
|
||
|
|
#define SCROLL_UP 0 /* scroll forward */
|
||
|
|
#define SCROLL_DOWN 1 /* scroll backward */
|
||
|
|
#define BLANK_MEM ((u16_t *) 0) /* tells mem_vid_copy() to blank the screen */
|
||
|
|
#define CONS_RAM_WORDS 80 /* video ram buffer size */
|
||
|
|
#define MAX_ESC_PARMS 4 /* number of escape sequence params allowed */
|
||
|
|
|
||
|
|
/* Constants relating to the controller chips. */
|
||
|
|
#define M_6845 0x3B4 /* port for 6845 mono */
|
||
|
|
#define C_6845 0x3D4 /* port for 6845 color */
|
||
|
|
#define INDEX 0 /* 6845's index register */
|
||
|
|
#define DATA 1 /* 6845's data register */
|
||
|
|
#define STATUS 6 /* 6845's status register */
|
||
|
|
#define VID_ORG 12 /* 6845's origin register */
|
||
|
|
#define CURSOR 14 /* 6845's cursor register */
|
||
|
|
|
||
|
|
/* Beeper. */
|
||
|
|
#define BEEP_FREQ 0x0533 /* value to put into timer to set beep freq */
|
||
|
|
#define B_TIME 3 /* length of CTRL-G beep is ticks */
|
||
|
|
|
||
|
|
/* definitions used for font management */
|
||
|
|
#define GA_SEQUENCER_INDEX 0x3C4
|
||
|
|
#define GA_SEQUENCER_DATA 0x3C5
|
||
|
|
#define GA_GRAPHICS_INDEX 0x3CE
|
||
|
|
#define GA_GRAPHICS_DATA 0x3CF
|
||
|
|
#define GA_VIDEO_ADDRESS 0xA0000L
|
||
|
|
#define GA_FONT_SIZE 8192
|
||
|
|
|
||
|
|
#endif
|