46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
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#ifndef __SCREEN_H
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#define __SCREEN_H
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#define VIDEO_ADDRESS 0xb8000
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#define GREEN_ON_BLACK 0x02
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#define FB_COMMAND_PORT 0x3D4
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#define FB_DATA_PORT 0x3D5
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// The I/O port commands
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#define FB_HIGH_BYTE_COMMAND 14
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#define FB_LOW_BYTE_COMMAND 15
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enum vga_colors {
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BLACK = 0,
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BLUE = 1,
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GREEN = 2,
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CYAN = 3,
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RED = 4,
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MAGENTA = 5,
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BROWN = 6,
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LIGHT_GREY = 7,
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DARK_GREY = 8,
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LIGHT_BLUE = 9,
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LIGHT_GREEN = 10,
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LIGHT_CYAN = 11,
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LIGHT_RED = 12,
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LIGHT_MAGENTA = 13,
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LIGHT_BROWN = 14,
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WHITE = 15,
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};
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extern void set_current_color(enum vga_colors color);
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extern void printchar(const char character);
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extern void print(const char string[]);
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extern void handle_scrolling();
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extern void clear();
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extern void set_cursor(int row, int col);
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extern void itoa(int num, char *string2);
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extern void tohex(int val, char *string);
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extern void kprintf(const char *string, ...); // simple printf style function
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void zerostring(char *string); // zero out a string needs refactor
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extern unsigned int strlen(const char *string);
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// end funciton prototypes
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#endif
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