AST RESEARCH, INC. TECHNICAL BULLETIN # 1714 05/06/97 TITLE: Ascentia J, Serial Mouse Freezes ISSUE A serial mouse attached to the Ascentia J may stop responding after a few minutes of operation under Windows 3.xx. This issue affects all Ascentia J systems. BACKGROUND A problem with the 16550 UART implementation in a Pentium(TM)-based system causes the chip to become trapped in a mode in which data is always detected in its FIFO buffer. The system may stop responding if there is data in the chip when the serial communications application attempts to open the communications port. ACTION To resolve the issue, perform the following: 1. Download the file SERIAL.ZIP from the Standard Microsystems (SMC) website located at: ftp://170.129.51.1/pub/chips/superio/ 2. Unzip the file mentioned above and follow the instructions in the enclosed README file. NOTES N/A TAN 000540NS --------------------------------------------------------------------- The information in this data sheet is subject to change without notice. AST Research, Inc. shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material. This material contains information protected by copyright. No part of this material may be reproduced in any form without prior written consent from AST Research, Inc. All rights reserved. --------------------------------------------------------------------- Revision 01