OpenVMS ALPTTDR02_062 Alpha V6.- V6.2-1H3 YSDRIVER ECO Summary

TITLE: OpenVMS ALPTTDR02_062 Alpha V6.- V6.2-1H3 YSDRIVER ECO Summary
 
NOTE:  An OpenVMS saveset or PCSI installation file is stored
       on the Internet in a self-expanding compressed file.
       The name of the compressed file will be kit_name-dcx_vaxexe
       for OpenVMS VAX or kit_name-dcx_axpexe for OpenVMS Alpha.
 
       Once the file is copied to your system, it can be expanded
       by typing RUN compressed_file.  The resultant file will
       be the OpenVMS saveset or PCSI installation file which
       can be used to install the ECO.
 
 
Copyright (c) Compaq Corporation 1995, 1999.  All rights reserved.

PRODUCT:    OpenVMS Alpha

COMPONENT:  YSDRIVER.EXE

SOURCE:     Digital Equipment Corporation

ECO INFORMATION:

     ECO Kit Name:  ALPTTDR02_062
     ECO Kits Superseded by This ECO Kit:  ALPTTDR02_070 
                                              (for 6.2 - 6.2-1H3 *ONLY*)
                                           ALPTTDR01_062
     Blocks:  432 blocks

     Kit Applies To:  OpenVMS Alpha V6.2, V6.2-1H1, V6.2-1H2, 6.2-1H3
                                    
     System/Cluster Reboot Necessary:  Yes
     Rolling Reboot Supported:  Yes
     Installation Rating:  INSTALL_3
			   3 - To be installed on all systems running
			       the listed versions of OpenVMS which
			       are experiencing the problems described.

    Kit Dependencies:

       The following remedial kit(s) must be installed BEFORE
       installation of this kit:

         None.

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

         None.



ECO KIT SUMMARY:

An ECO kit exists for YSDRIVER/TTDRIVER on OpenVMS Alpha V6.2 through
V6.2-1H3.  This kit addresses the following problem:

Problems Addressed in ALPTTDR02_062:

  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, 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  SYS$TTDRIVER %SYSTEM-F-BADESCAPE error

     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.
               

Problems Addressed in ALPTTDR02_070 for OpenVMS V6.2:

  o  Due to a problem with the port-driver-specific flow control
     logic, output will not stop until the end of an output burst 
     when XOFF is received.


Problems Addressed in ALPTTDR01_062:

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

     This problem has been fixed in OpenVMS Alpha V7.0.


INSTALLATION NOTES:

The images in this kit will not take effect until the system is
rebooted.  If there are other nodes in the VMScluster, 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.

alpttdr02_062.README
alpttdr02_062.CHKSUM
alpttdr02_062.CVRLET_TXT
alpttdr02_062.a-dcx_axpexe