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The C Users' Group Library 1994 August
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wc-cdrom-cusersgrouplibrary-1994-08.iso
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v_09_01
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9n01137a
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1990-12-16
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/* works with Microsoft C V6.0, PC with EGA */
#include <stdio.h>
#include <dos.h>
void cchar(int chr, int color, int background, int blink, int page);
#define BLACK O
#define BLUE 1
#define GREEN 2
/* etc. */
void main()
{
printf("%c", 65); /* prints 'A' */
printf("%c", l); /* prints smiley face */
printf("%c", 7); /* rings bell */
putchar(7); /* rings bell */
/* above functions call DOS (probably via INT 21H), which
** executes some control codes with their traditional meaning.
*/
/* now bypass DOS and use ROM-BIOS * /
cchar(7, GREEN, BLACK, 1, 0); /* blinking green diamond */
}
/* color character at present cursor location */
void cchar( int chr, int color, int background, int blink, int page)
{
union REGS regs;
regs.h.ah = 9; /* write character function */
regs.h.al = chr; /* character code */
/* attribute */
regs.h.bl = (blink ? Ox80 : 0) | ((background & 7) << 4) | (color & 0x0f);
regs.h.bh = page; /* display page */
regs.x.cx = l; /* repetition count */
int86(0xlO, ®s, ®s); /* call BIOS video function */
}