conio.h

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#ifndef CONIO_H
#define CONIO_H
 
#include "types.h"
 
typedef enum {TextMode = 2, TextColorMode = 16, ColorMode = 19} Mode;
 
typedef struct Cursor {
    Byte x, y;
} Cursor;
 
typedef union Attributes {
    struct {
        Byte foreground: 4;
        Byte background: 3;
        Byte blink: 1;     
    };
    Byte attributes;
} Attributes;
 
void setVideoMode(Mode mode) {
    asm("int 0x10"
        :
        :"a"(0x0000|mode));
}
 
void setColorPalette(Byte color) {
    asm("int 0x10"
        ::"a"(0x0b00), "b"(color));
}
 
Cursor getCursorPosition(void) {
    Cursor cursor;
    asm("int 0x10"
        : "=d"(cursor)
        : "a"(0x0300), "b"(0x0));
    return cursor;
}
 
void setCursorPosition(Cursor cursor) {
    asm("int 0x10"
        :: "a"(0x0200), "b"(0x0), "d"(cursor));
}
 
void cls(void) {
    asm("int 0x10\n\
        cls_l%=:\n\
        mov ax,0\n\
        int 0x20\n\
        loop cls_l%=\n\
        mov ax,0x0200\n\
        int 0x10"
        :
        : "a" (0x0200),
        "b" (0x0),
        "c" (0xffff),
        "d" (0x0));
}
 
void cputc(char c, Color color, Byte times) {
    asm("int 0x10"::"a"(0x0900|c), "b"(0x0000|color), "c"(times));
    //move cursor by 1
    asm("int 0x10"
        :: "a" (0x0300), "b" (0x0));
    asm("add dl, al\n\
        int 0x10"
        :: "a"(0x0200|times));
}
 
void cputs(int str, Color color) {
    char* ptr = (char *)str;
    while(*ptr != 0) {
        asm("int 0x10"::"a"(0x0900|*ptr), "b"(0x0000|color), "c"(1));
        //move cursor by 1
        asm("int 0x10\n\
            mov ah,02\n\
            inc dl\n\
            int 0x10"
            :: "a" (0x0300), "b" (0x0));
        ptr++;
    }
}
 
#endif //CONIO_H