SIO.SYS

The Sio.sys driver is a replacement for the com.sys driver. The Sio.sys driver can support up to 16 COM ports. DEVICE=\OS2\BOOT\SIO.SYS DEVICE=\OS2\BOOT\SIO.SYS (Cn, An, In, Ig, Fc)

The number of the Com port or the string COM1 to COMn. If you use a * in front of the Com port, then the port will be used as a PCMCIA Com port.
 * CN

A hexnumber to define the I/O address of the Com port.
 * AN

The IRQ number (0 to 15) or the string IRQ0 to IRQ15. If you don't use this parameter, SIO will search for a IRQ.
 * IN

This exists only for compatibility with COM.SYS and is ignored by Sio.sys.
 * IG

Platform Support: