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23 lines
425 B
C
23 lines
425 B
C
#ifndef SCREEN_H
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#define SCREEN_H
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#include "../cpu/type.h"
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#define VIDEO_ADDRESS 0xb8000
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#define MAX_ROWS 25
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#define MAX_COLS 80
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#define WHITE_ON_BLACK 0x0f
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#define RED_ON_WHITE 0xf4
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/* Screen i/o ports */
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#define REG_SCREEN_CTRL 0x3d4
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#define REG_SCREEN_DATA 0x3d5
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/* Public kernel API */
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void clear_screen();
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void kprint_at(char *message, int col, int row);
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void kprint(char *message);
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void kprint_backspace();
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#endif
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