Function txt_monoadapt_check

sys/msdos/vidtxt.c:509–518

#ifdef MONO_CHECK
int
txt_monoadapt_check(void)
{
    union REGS regs;

    regs.h.al = 0;
    regs.h.ah = GETMODE; /* get video mode */
    (void) int86(VIDEO_BIOS, &regs, &regs);
    return (regs.h.al == 7) ? 1 : 0; /* 7 means monochrome mode */
}
#endif /* MONO_CHECK */
#endif /* NO_TERMS  */