ECO NUMBER:     ALPTTDR02_062
             PRODUCT:        OpenVMS Alpha OPERATING SYSTEM 6.2
             UPDATE PRODUCT: OpenVMS Alpha OPERATING SYSTEM 6.2




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1  KIT NAME:

     ALPTTDR02_062


2  KITS SUPERSEDED BY THIS KIT:

     ALPTTDR01_062


3  KIT DEPENDENCIES:

     3.1  The  following  remedial  kit(s)  must  be  installed   BEFORE
          installation of this, or any required kit:

     None.


     3.2  In order to receive all the corrections listed  in  this  kit,
          the following remedial kits should also be installed:

     None.


4  KIT DESCRIPTION:

     4.1  Version(s) of OpenVMS to which this kit may be applied:

     OpenVMS Alpha V6.2, V6.2-1H1, V6.2-1H2, V6.2-1H3


     4.2  Files patched or replaced:


      o  [SYS$LDR]SYS$TTDRIVER.EXE (new image)

      o  [SYS$LDR]SYS$YSDRIVER.EXE (new image)



5  PROBLEMS ADDRESSED IN ALPTTDR02_062 KIT


      o  Two class driver-related problems occurred:

         1.  While in pasthru mode, loss  of  synchronization  with  the
             class  driver  occurred  during  a  high  volume  of single
             character burst transmits.

             The high volume of single character burst transmits occurs,
             for example, when pasting to a DECterm window that has been
             directed out to  the  serial  port  with  a  SET  HOST/DTE.
             Consequently,  the  transmit  FIFO  buffer  would  overrun,

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             resulting in the loss of data.

         2.  Error bits were not cleared before a character  was  passed
             to the class driver.

             When a receive error (eg.  parity error, framing error) was
             reported,  the  port  driver  (SYS$YSDRIVER)  would fail to
             clear error bits in the register  containing  the  received
             character   before   passing   it   to   the  class  driver
             (SYS$TTDRIVER).  The result would be a bugcheck at  various
             points in the class driver.


      o  When the driver SYS$TTDRIVER performed a QIO read function,  an
         %SYSTEM-F-BADESCAPE  exception occurred.  This problem happened
         when  an  EUC  Hankaku  Katakana  code  was  input  using   the
         REFLECTION terminal emulator via a LAT.



6  PROBLEMS ADDRESSED IN ALPTTDR01_062 KIT FOR OPENVMS ALPHA V6.2 ONLY


      o  TTA0 baud rates below 600 (that is, 50, 75, 150,  or  300)  not
         working on ALPHASERVER 2100.



7  KIT INSTALLATION RATING:

     The following kit  installation  rating,  based  upon  current  CLD
     information,  is  provided  to  serve as a guide to which customers
     should apply this remedial kit.  (Reference attached Disclaimer  of
     Warranty and Limitation of Liability Statement)

     INSTALLATION RATING:

       INSTALL_3 : To  be  installed  by  customers  experiencing  the  problems
           corrected.



8  INSTALLATION INSTRUCTIONS:

     Install this kit with the VMSINSTAL utility  by  logging  into  the
     SYSTEM account, and typing the following at the DCL prompt:

     @SYS$UPDATE:VMSINSTAL ALPTTDR02_062 [location of the saveset]

     The saveset location may be a tape drive, CD, or a  disk  directory
     that contains the kit saveset.

     The images in this kit will not take effect  until  the  system  is
     rebooted.

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     If you have other nodes in your VMS  cluster,  they  must  also  be
     rebooted  in  order  to make use of the new image(s).  If it is not
     possible or convenient to reboot the entire cluster at this time, a
     rolling re-boot may be performed.


     Copyright  (c)  Compaq  Computer  Corporation,  1999   All   Rights
     Reserved.   Unpublished rights reserved under the copyright laws of
     the United States.

     The software contained on this media is proprietary to and embodies
     the   confidential   technology  of  Compaq  Computer  Corporation.
     Possession, use, or dissemination of  the  software  and  media  is
     authorized  only  pursuant  to  a valid written license from Compaq
     Computer Corporation.

     DISCLAIMER OF WARRANTY AND LIMITATION OF LIABILITY

     THIS PATCH IS PROVIDED AS IS, WITHOUT WARRANTY OF  ANY  KIND.   ALL
     EXPRESS  OR  IMPLIED  CONDITIONS,  REPRESENTATIONS  AND WARRANTIES,
     INCLUDING ANY IMPLIED  WARRANTY  OF  MERCHANTABILITY,  FITNESS  FOR
     PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED TO THE
     EXTENT PERMITTED BY APPLICABLE LAW.  IN NO  EVENT  WILL  COMPAQ  BE
     LIABLE  FOR  ANY  LOST REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT,
     CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER  CAUSED  AND
     REGARDLESS  OF  THE  THEORY OF LIABILITY, WITH RESPECT TO ANY PATCH
     MADE AVAILABLE HERE OR TO THE USE OF SUCH PATCH.