DEFAULT SETTINGS


    By default, BNU  uses  1K  (1024 byte) communications buffers
    for both transmit and receive.  This should be sufficient, if
    not excessive, for most applications.   This  may  need to be
    varied for systems  running  at slow (less than  6MHZ)  clock
    speeds, use modems  with  higher  baud  rates,  make  use  of
    special modem technology, run under  multitasking software or
    run on a  network.   Some applications (for example  terminal
    emulation systems and bulletin boards) require more buffering
    because of the nature of how they communicate.

    The fast 'ANSI' output is DISabled by default.  The option to
    use the faster  output  method  will normally work well under
    standard MS-DOS, DESQview  or  most  DOS-based  environments.
    This will NOT  work under PC-MOS/386 as it makes  use  of  an
    undocumented MS-DOS feature  not  supported by that operating
    system.

    After installation (only the first  successful  invocation of
    BNU.COM actually loads the TSR portion), the FOSSIL  driver's
    extended interrupt driven  functions  are  inactive, and only
    the basic BIOS   services  are   provided   (by   BNU).    An
    application must specifically   "initialise"   a   port   for
    communications to make it become active and use the interrupt
    driven functions.

    When BNU is  installed,  it  does a brief and simple hardware
    diagnostic to detect what communications ports are valid.  If
    errors are found  (most  PC BIOS'  miss  detection  of  16550
    USARTS, cannot detect  non-standard  communications  hardware
    and do not  look  for  anything  above COM2), the appropriate
    BIOS tables and hardware bits  are  patched.  This means that
    if you install and use non-standard port and IRQ settings for
    a communications card,  and  tell  BNU about these  (via  the
    BNUPORT utility) your  BIOS  will be changed to reflect this,
    allowing other BIOS-compatible    programs    to    use   the
    communications port (COM1 through COM4 only since the PC BIOS
    can only support up to 4 ports).