Micromod Micro-DCI: 53HC2600 LoopMaster SL6000 CONFIGURATION TOOLKIT - Manual (Page 63)

53HC2600 INSTRUCTION MANUAL
Troubleshooting 55
7.0 TROUBLESHOOTING
7.1 SERIAL.386 File Installation Instructions
LoopMaster requires a version of SERIAL.386 dated February 17, 1994 or later. Microsoft’s Product Sup-
port Application Note regarding SERIAL.386, which resides in LoopMaster’s install disk MSREADME.TXT
file, is provided below.
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 PUR-
POSE. 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 cop-
ied 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
®
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
© 1994 Microsoft Corporation. All Rights Reserved. Microsoft and MS-DOS are registered trade-
marks 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 expe-
rience the following problems:
• If you are using a Pentium
™-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.
✎ NOTE Ignore Step 3 of Microsoft’s instructions, where it states the
WG1001 disk should be inserted into the floppy drive.
Microsoft
®
Product Support Services Application Note (Text File) WG1001:
UPDATED SERIAL.386 DRIVER FOR WINDOWS™ FOR WORKGROUPS