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51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#ifndef VGA_H
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#define VGA_H
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#include <stdint.h>
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#include <stddef.h>
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/* hardware text mode const */
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enum vga_color {
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VGA_COLOR_BLACK = 0,
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VGA_COLOR_BLUE = 1,
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VGA_COLOR_GREEN = 2,
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VGA_COLOR_CYAN = 3,
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VGA_COLOR_RED = 4,
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VGA_COLOR_MAGENTA = 5,
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VGA_COLOR_BROWN = 6,
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VGA_COLOR_LIGHT_GREY = 7,
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VGA_COLOR_DARK_GREY = 8,
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VGA_COLOR_LIGHT_BLUE = 9,
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VGA_COLOR_LIGHT_GREEN = 10,
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VGA_COLOR_LIGHT_CYAN = 11,
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VGA_COLOR_LIGHT_RED = 12,
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VGA_COLOR_LIGHT_MAGENTA = 13,
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VGA_COLOR_LIGHT_BROWN = 14,
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VGA_COLOR_WHITE = 15,
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}
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static inline uint8_t
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vga_entry_color(enum vga_color fg, enum vga_color bg)
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{
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return fg | bg << 4;
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}
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static inline uint16_t
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vga_entry(unsigned char uc, uint8_t color)
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{
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return (uint16_t) uc | (uint16_t) color << 8;
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}
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/* using mode 3 of VGA 80x25 */
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#define VGA_WIDTH 80
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#define VGA_HEIGHT 25
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#define VGA_MEMORY 0xB8000 /* VGA memory location */
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void term init(void);
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void term_setcolor(uint8_t color);
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void term_putentryat(char c, uint8_t color, size_t x, size_t y);
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void term_putchar(char c);
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void term_write(const char* data, size_t size);
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void term_writestr(const char* data);
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#endif #VGA_H
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