Star Micronics IS-8H192 Guide D'utilisation page 13

This line tells the computer to send printer output to the COMn serial
port. The letter n stands for the number 1, 2, etc. You should input
COM1, COM2, etc. to identify the serial port to which the serial cable
from the serial interface unit is connected.
• Also add the following line to your AUTOEXEC.BAT file:
MODE COMn:baud, parity, data length, stopbits, p
This line sets up the COMn port according to the parameters you input
for baud, parity, data length, and stopbits. To set up COM2 for
9600 bps, no parity, data length of 8 bits and 1 stop bit, you should input
the following:
MODE COM2:9600,N,8,1,p
The letter "p" at the end of the line tells the computer that the printer will
continually try to re-send data whenever an error occurs. If you need
further information about the MODE command, see your MS-DOS
User's Guide.
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