🚀 go-pugleaf

In article <HPV.92Nov10162244@kelvin.uio.no>, hpv@kelvin.uio.no (Hans Peter Verne) writes:
> 
> I'm writing this for a friend who doesn't have access to the net, poor soul.
> Please reply by mail, I'll post a follow-up (if I get any replies...).
> 
> Does anyone know a reliable way to determine if windows (tm) is running,
> and under which mode, from a standard dos program ?
> 
> I've tried the int2F,1600 function, but to no awail.
> 
> Greetings,
> Hans Peter ( hpv@ulrik.uio.no )


Here is one:

is_windows_installed()
{ // says yeah if Windows or SHELL installed
  struct REGPACK rp; // Turbo-C
  if (peek(0, 0x2F*4)==0) return 0; // no vector check
  rp.r_ax=0x1600;
  intr (0x2F, &rp); // Look for enhanced mode
  if (((rp.r_ax&0xFF)==0x80) || ((rp.r_ax&0xFF)==0)) {
    rp.r_ax=0x4680; intr (0x2F, &rp); // Look for /R/S or Shell
    if (rp.r_ax!=0) return 0; // !=0 is faster than (rp.r_ax)
  }
  return 1; // Win's here
}

Aki.
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