65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
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#ifndef __brados_video_vga_h__
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#define __brados_video_vga_h__
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#include <stddef.h>
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#include <stdint.h>
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#define VGA_BUF 0xB8000
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#define VGA_WIDTH 80
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#define VGA_HEIGHT 24
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// VGA State
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struct vgastate {
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size_t term_row, term_col;
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uint8_t term_color;
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uint16_t *term_buf;
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};
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// Color constants
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enum vga_color
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{
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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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// Create a VGA color
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uint8_t make_color(enum vga_color fg, enum vga_color bg);
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// Create a VGA character
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uint16_t make_vgaEntry(char c, uint8_t color);
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// Initialize a VGA term
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void term_init(struct vgastate *state);
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// Write a character to a VGA term
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void term_putChar(struct vgastate *state, char c);
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// Place a character in a VGA term's buffer
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void term_putEntryAt(struct vgastate *state, char c, uint8_t color, size_t x, size_t y);
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// Scroll the term down 1 line
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void term_scroll(struct vgastate *state);
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// Set VGA term color
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void term_setColor(struct vgastate *state, uint8_t color);
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// Write a string to a VGA term
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void term_writeStr(struct vgastate *state, const char *data);
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#endif
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