Windows 3.0 Support of 16550 and 16550A UART

Last reviewed: November 22, 1994
Article ID: Q64935

The information in this article applies to:

Microsoft Windows operating system versions 3.0, 3.0a

Microsoft Windows version 3.0 does not support the advanced first-in-first- out (FIFO) buffer feature of the 16550 and 16550A Universal Asynchronous Receiver Transmitter (UART). It does support the 16550 and 16550A as a standard 8250 UART.

The 8250 UART has been the primary micro-circuitry for communication ports in IBM-compatible machines. If the computer's communication port is using the 16550 or 16550A, you should disable the FIFO buffer.

Refer to your hardware documentation or contact your manufacturer for assistance in disabling the FIFO buffer.

KBCategory: kbhw
KBSubcategory: win30
Additional reference words: 3.00 3.0 3.0a 3.00a KBHW

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: November 22, 1994
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.