Asynchronous Communications Device Driver with PCI Support README
Version 1.1
August 6, 2001
(c) Copyright International Business Machines Corporation, 2001.
    All rights Reserved.

Contents
========
1.0 Introduction
2.0 Installation Instructions
3.0 Copyright and Trademark Information

1.0 Introduction
    ============
Asynchronous Communications Device Driver (COM DD) is OS/2 physical
installable DD that allows OS/2 application programs or system programs
to utilize the serial COM ports. Current version of the COM DD is
extended to support serial port PCI add-on cards (controllers) with
implemented software IRQ sharing and works for a maximum of four legacy
and PCI COM ports with the reserved device names COM1, COM2, COM3, and
COM4.

The COM DD with PCI support accepts the same CONFIG.SYS parameters as
legacy COM DD (see OS/2 Command Reference).

Note: PCI serial controllers are identified by PCI device class/interface
codes: Base Class = 0x07 - simple communications controllers,
Sub-Class = 0x00 - serial controllers, Interface = from 0x00 - generic serial
controller to 0x06 - 16x50-compatible serial controller. (Encodings for class
codes are provided in the PCI Local Bus Specification, Revision 2.2,
Appendix D.).

2.0 Installation Instructions
    =========================
The OS/2 COM DD with PCI support software consists of the following files:
- COM.SYS       the COM DD with PCI support,
- COMPCI.DDP    the COM DD Profile,
- README.TXT    this file that you are reading.

OS/2 automatically puts the following statement in CONFIG.SYS file:
DEVICE=D:\OS2\BOOT\COM.SYS
where  D: is the drive where OS/2 is installed.

The installation of the COM DD with PCI support is performed by replacing
the legacy COM.SYS file in the directory D:\OS2\BOOT with the new file and
rebooting the system.

To perform the above operations the OS/2 DD Installation command (DDINSTAL)
can be used:
- Copy the OS/2 COM DD with PCI support files (see above) to the Device
  Support diskette or directory.
- Open an OS/2 window and enter DDINSTAL command to display the DD
  Installation window.
- Set in the Source directory field the Device Support diskette or
  directory.
- Select Install if the Source directory and Destination directory are
  correct and you are ready to install the COM DD with PCI support.
- Verify the COM.SYS statement in the CONFIG.SYS file and add/change
  its parameters if necessary.
- Reboot the oprating system.

3.0 Copyright and Trademark Information
    ===================================
The following terms are trademarks of International Business Machines
Corporation in the United States and/or other countries:
        IBM
        OS/2
Other company, product, and service names may be trademarks or service
marks of others.

