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    Types: TextFile
    Names: »RELDESCR.T«

└─⟦e0c43619c⟧ Bits:30005797 CR80 Disc pack ( Vol:FNJ1 861029/EC CR80 S/W Package II+III+IV+V+VII )
    └─ ⟦this⟧ »CSP005_V0501.D!CSS314.D!RELDESCR.T« 

TextFile

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*******************************************************

         R E L E A S E   D E S C R I P T I O N

*******************************************************




Module id number: CSS/314
--------------------------

Module name:      TDX driver
-----------------------------------

Actual release:   02.01            Release date: 831101
-----------------------            --------------------

Previous release: 01.09            Release date: 821019
-----------------------            --------------------




New facilities:
---------------

>> Release 0109 <<
   0109       TLM/821018  - A NEW VERSION, WHICH IS ABLE TO RUN ON A
                            CPU WHICH DOES NOT SWAP THE PAGE BITS IN THE
                            PSW.
                            NOW FOUR VERSIONS EXIST :
                                    STANDARD
                                    DORA
                                    FIKS
                                    STANDARD FOR NON-BIT-SWAPPING CPU
                          - THE PSW USED, WHEN SWITCHING BETWEEN PAGES
                            IS CHANGED FROM #E800 TO #E000, SO THAT
                            EMERGENCY ACTION IS NOT CAUSED.
                          - EXECUTION LEVEL IS SET TO ONE, TO CONFORM
                            TO XAMOS CPUS, WITH BOUND CHECK.

>> Release 0107 <<

   0107      TLM/820505     IN SOME SPECIAL CASES, THE TDX DRIVER WOULD
                            RETURN A COMPLETION CODE EQUAL TO 0 AND
                            TRANSFERRED BYTES EQUAL TO 0 AS A RESPONSE
                            TO AN OUTPUT COMMAND. THIS CONDITION CAUSES
                            THE AMOS I/O SYSTEM TO CONVERT THE COMPLETION
                            CODE TO END-OF-FILE (#201).
                            THIS TDX DRIVER ERROR IS CORRECTED IN THIS
                            VERSION (EVEN THE DORA SPECIAL PROTOCOL).


>> Release 0106 <<

   0106      BB/820211 ***- INDIVIDUAL OUTPUT TIMER.
                       ***  IT IS NOW POSSIBLE TO SET THE
                       ***  OUTPUT-TIMER-PRESET PER CHANNEL AT
                       ***  CREATION TIME (ONLY WITH FIKS OR DORA
                       ***  VERSIONS)

>> Release 0105 <<

   0105      TLM/811023   - IT IS NOW POSSIBLE TO START A DATA
                            TRANSMISSION, WITH THE TLE POINTING
                            TO THE UPPER BYTE OF A WORD.
                          - THE CONSTANT OUTPUT-TIMER-PRESET, WHICH
                            DEFINES THE MAX WAITING TIME FOR TIMEOUT
                            ON OUTPUT OPERATIONS, IS MADE A VARIABLE
                            SO THAT IT IS EASY TO CHANGE BY  PATCHING.
                            AT THE SAME TIME THE VALUE IS DECREASED
                            FROM #7F TO #3F.
                          - A MAXIMUM WAITING TIME FOR A HOST INTERFACE
                            ASSIGNMENT IS IMPLEMENTED. NOW IT ONLY
                            WAITS FOR THE MAX TIME, AND IF THE HOST I/F
                            HAS NOT BECOME READY WITHIN THAT TIME, AN
                            ERROR MESSAGE (#603) IS RETURNED TO THE
                            CALLING PROCESS.
                            AT PRESENT THIS MAX TIME IS SET TO TWO
                            MINUTES.
             LKN/811023   - THE END OF PACKET INDICATION IN THE LAST
                            DATA BUFFER LINK OF A PACKET IS NOW SET
                            BEFORE THE LAST DATA BUFFER LINK IS
                            LINKED TO THE LIST (BY USING 'QUEUE LAST
                            DATA BUFFER LINK' (QLDBLI/QLDBLO) WHEN
                            INSERTING THE LAST DATA BUFFER LINK.


>> Release 0104 <<

   WORD 12 OF A PROTOCOL DESCRIPTOR IS
   NOW CLEARED IN EACH CREATION OF A
   NEW LOG. LINE


>> Release 0103 <<
If a parity error is discovered in the Host Interface memory,
the TDX Driver makes a reset of the Host, and terminates
with the code #602.


>> Release 0102 <<
Cancel implemented. This demands a change in TDX Host Interface
firmware, which is not implemented yet (actual date is 810512).

>> Release 0101 <<
Initial release.
«ff»

Changes:
--------

>> Release 0201 <<

   An assign command is accepted even if the device is already
   assigned. However the HOST-NO is changed according to the
   given value.

   The HOST-NO is now 5 bits instead of 4.

>> Release 0108 <<

   The input cancelling is changed to reduce the time spent by
   applications waiting for cancel reply.


Errors corrected:
-----------------

>> Release 0108 <<
Changed host i/f processing for flow control had introduced a critical
hazard between driver and host i/f. This error has been removed by
changing the driver processing when setting up transfers.

>> Release 0103 <<
If there were retransmissions in the actual transfer, the TDX Driver
would return an incorrect bytecount of transferred bytes.


>> Release 0102 <<
With two or more channels open to the same device, dismantling of
one of them would imply total closedown of the channel.


Reported errors, not corrected:
-------------------------------

>> Release 0103 <<

It is not possible to transfer data correctly, if the transmission
is to start with an upper byte of a word.


CPECRs implemented in current release:
--------------------------------------

Comments:
---------
 «a5»