Dec 142017
 
MS Windows for Workgroups 3.11 Serial.386 update. Fixes 16550 UART problems and unexplained comm port timeouts.

Full Description of File


Updated SERIAL.386 driver for WFWG 3.11


File WG1001.ZIP from The Programmer’s Corner in
Category Windows 3.X Files
MS Windows for Workgroups 3.11 Serial.386 update. Fixes 16550 UART problems and unexplained comm port timeouts.
File Name File Size Zip Size Zip Type
FILE_ID.DIZ 39 39 stored
README.TXT 4519 1659 deflated
SERIAL.386 10620 5127 deflated

Download File WG1001.ZIP Here

Contents of the README.TXT file


Updated SERIAL.386 driver for WFWG 3.11======================================================================
Microsoft(R) Product Support Services Application Note (Text File)
WG1001: UPDATED SERIAL.386 DRIVER FOR WINDOWS(TM) FOR WORKGROUPS
======================================================================
Revision Date: 3/94
1 Disk Included

The following information applies to Microsoft Windows for Workgroups,
version 3.11.

-----------------------------------------------------------------------
| INFORMATION PROVIDED IN THIS DOCUMENT AND ANY SOFTWARE THAT MAY |
| ACCOMPANY THIS DOCUMENT (collectively referred to as an Application |
| Note) IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER |
| EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR |
| PURPOSE. The user assumes the entire risk as to the accuracy and |
| the use of this Application Note. This Application Note may be |
| copied and distributed subject to the following conditions: 1) All |
| text must be copied without modification and all pages must be |
| included; 2) If software is included, all files on the disk(s) |
| must be copied without modification (the MS-DOS(R) utility |
| diskcopy is appropriate for this purpose); 3) All components of |
| this Application Note must be distributed together; and 4) This |
| Application Note may not be distributed for profit. |
| |
| Copyright (C) 1994 Microsoft Corporation. All Rights Reserved. |
| Microsoft and MS-DOS are registered trademarks and Windows is a |
| trademark of Microsoft Corporation. |
| Pentium is a trademark of Intel Corporation |
|---------------------------------------------------------------------|

Introduction
------------

When you use Windows for Workgroups version 3.11 with serial
communications software, you may experience the following problems:

- If you are using a Pentium(TM)-based machine with a 16550 UART chip,
your system stops responding (hangs) if there is data in the chip
when the serial communications application attempts to open the
communications port.

A problem with the 16550 UART implementation causes the chip to
become trapped in a mode in which data is always detected in its
FIFO buffer.

- When you are using communications software, you may be able to make
one connection after starting Windows for Workgroups, but any
subsequent connections fail and may hang your system.

This problem occurs when SERIAL.386 sends an extra NUL character
through the port when the communications software calls the
CloseComm application program interface (API) function. While this
does not normally cause problems, your second connection may fail
with some modems.

The WG1001 disk included with this Application Note contains an
updated SERIAL.386 driver that corrects both of these problems.

To install the updated SERIAL.386 file
--------------------------------------

1. Quit Windows for Workgroups.

2. Make a backup copy of the currently installed SERIAL.386 file by
typing the following at the MS-DOS command prompt and then pressing
ENTER

ren :\serial.386 serial.old

where : is the location of your Windows SYSTEM
subdirectory.

For example, if your Windows directory is called WINDOWS and is on
drive C, type the following at the MS-DOS command prompt and then
press ENTER:

ren c:\windows\system\serial.386 serial.old

3. Insert the enclosed WG1001 disk in the appropriate floppy disk
drive.

4. To copy the file to the Windows SYSTEM subdirectory, type the
following at the MS-DOS command prompt and then press ENTER

copy :\serial.386

where is the floppy disk drive containing the WG1001 disk
and is the drive and directory of your Windows SYSTEM
subdirectory.

For example, if the WG1001 disk is in drive A and your Windows
directory is called WINDOWS and is on drive C, type the following
at the MS-DOS command prompt and then press ENTER:

copy a:\serial.386 c:\windows\system


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