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Lesson 18

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Carlos Fenollosa
2015-02-03 19:12:51 +01:00
parent 69a7c1c2a6
commit 418bb11305
17 changed files with 412 additions and 16 deletions
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17-video-scroll/drivers/screen.h
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../../16-video-driver/drivers/screen.h

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17-video-scroll/drivers/screen.h Normal file
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#define VIDEO_ADDRESS 0xb8000
#define MAX_ROWS 25
#define MAX_COLS 80
#define WHITE_ON_BLACK 0x0f
#define RED_ON_WHITE 0xf4
/* Screen i/o ports */
#define REG_SCREEN_CTRL 0x3d4
#define REG_SCREEN_DATA 0x3d5
/* Public kernel API */
void clear_screen();
void kprint_at(char *message, int col, int row);
void kprint(char *message);