
FORMAT

The format of the COMx command is

[d:][path]COMX [options]

where

[d:][path]
    before COMX specifies the drive and path that contains the
    COMx program.

[options]
    specifies the optional parameters described in the following
    section.

OPTIONS

The following options can appear in the COMx command.  You'll
probably only need to use the /b (set baud rate) and /c (set serial
port number) options.  

/?
    Display help.

/aaddress
    Set serial adapter address.  address is specified in hex and is
    the base i/o address of the serial adapter.  You don't need to
    use this option if the cable is attached to serial port 1 or 2.
        
/bbaud
    Set baud rate.  baud can be 9600, 11520, 12800, 14400, 19200,
    23040, 28800, 38400, 57600, or 115200.  Files are transfered in
    less time at higher baud rates.  If this option is omitted, baud is
    set to 9600.  Both PCs should be set to the same baud rate. 
    For example, to set the baud rate to 28800 type
    [comx/b28800].

    Some PCs aren't fast enough to support all baud rates.  To
    determine the fastest rate your configuration will support, start
    at 9600 and increase it until a file cannot be transfered
    successfully (both PCs must be set to the same baud rate).  The
    section, Copying Files, explains how to use the COPY
    command to transfer files.

/cnumber
    Set serial port number.  number can be 0 or 1 and identifies
    the serial port.  If this option is omitted, serial port number 1
    (COM1) is assumed.  If the cable is connected to serial port
    number 2, enter the command [comx/c2].

/ninterrupt
    Sets adapter interrupt number.  This parameter identifies the
    interrupt number for the adapter specified with the /a option. 
    You don't need to use this option if the cable is attached to
    serial port 1 or 2.

/rline
    Sets adapter interrupt request line.  This parameter identifies
    the interrupt request line for the adapter specified with the /a
    option.  You don't need to use this option if the cable is
    attached to serial port 1 or 2.

/ttime
    Sets the timeout value between 1 and 30 seconds.  COMx will
    wait time number of seconds for a response from the remote
    PC before returning an error.  The default timeout is 10
    seconds.  

    If you receive the Abort, Retry, Ignore? message when copying
    files, press Retry (more than once if necessary).  If this works,
    you may want to increase the timeout value.  For example,
    [comx/t15].  If Retry doesn't work you may have a bad
    connection or too high a baud rate.

EXAMPLES

1.  The following example initializes COMx to communicate
    througth serial port 1 (COM1) at 57600 baud.

        comx/b57600

2.  The following example initializes COMx to communicate
    through serial port 2 (COM2) at 19200 baud.

        comx/b19200/c2

3.  The following example initializes COMx to communicate
    through serial port 1 at 115200 baud with a timeout value of 5
    seconds.

        comx/b115200/c1/t5

NOTES

.   Some programs- BASIC is a good example- may reset the serial
    ports and cause COMx to malfunction.  If you find that a
    program affects COMx, it may have changed the serial port
    configuration.  Executing the COMx command will probably
    correct the problem.  In rare instances, you may have to reboot
    your PC.
