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IR31236 has been installed.

Patch created on:    7th of November, 1996.
Patch applies to:   SNACOM on OS/2
Patch consists of:

  File:                         Size:    Date:      Time:
  ~~~~                          ~~~~     ~~~~       ~~~~
C:\PSCA\PSCA.ABS                139187   23-Oct-96   2:40p

Description of the problem:
 CCW trace and PT-3 trace show the 3172 giving 00 status
after an '90', ATTN+BUSY status. PT-3 trace shows that the
3172 gives '80',ATTN status which is stacked. Then a 17
WRITE CTL is issued to which the 3172 gives '90' ATTN+BUSY
status. VTAM responds with 14-01-02 CCW chain. However, on
the ending status the 3172 gives an erroneous 00 status
between CHANNEL END(08) and DEVICE END (04).
Example of PT-3 (The initial ATTN (80) is not seen in CCW trace
                 because it is stacked)
3172         Channel      VTAM
   ATTN(80)-----><----- VTAM SSCH for 17-01-02 CCW chain
       <--stacked
       <-------17
   ATTN+BUSY(90)--------> 3172 gives ATTN+BUSY for initial stat.
                   <----- VTAM SSCH for 14-01-02 CCW chain
       <-------14
   CE+DE(0C)--->
       <-------01
   CE+DE(0C)--->
            <----02
   CE (08)----->     CE alone will not show up in CCW trace.
   ?? (00)----->     Invalid 00 status.
   DE (04)----->     DE will show up in CCW trace


Description of the fix:
In the internal processing by the
psca in the 3172, after an ATTN+BUSY status is read
the 3172 stacked status condition is now cleared.
This is the same PSCA microcode level shipped with 3172 ICP 342.

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