_ DEC-O-LOG for DMZ32

_ DOL, DMZ32-I001, M8398 MAY 87

Problem: 1. Flush bit not clearing DMA correctly.
Symptom: File corruption on unibus disk controller drives and some
users getting other users data.  System errorlogger logs "IMR" invalid
map register errors. This bug requires that "DMA" mode be turned
off on all DMZ32 lines on the system.  This is a VAX/VMS specific
problem.
2. Problem: SSYNC timeout counter starts before NPG is received
            [NXM error].
   Symptom: This causes Ultrix and UNIX systems to hang and or
            crash based on operating system environment at the
            time of the timeout.
3. Problem: When H3014 is powered off/on, DTR is not reasserted
  	    by microcode.
   Symptom: Terminal lines set up as modem will not be able to
            connect to system, as well as users logged in through
            modem connections will be dropped due to no "DTR ON"
            status.  System must be rebooted to reenable modem
            lines.
4. Problem: Unsupported baud rates cause microcode to hang.
   Symptom: If un-suspecting user tries to set terminal to one
            of the two unsupported baud rates, the DMZ32 microcode
            will hang and the device will be unusable to the system.
            A total system reboot is required to clear the condition.
5. Problem: NXM error sets the wrong bit in Octet CSR.
   Symptom: No error reports from field, but if NXM were to occur,
            the YC-driver would not be notified of it's occurrence.
            This could have serious implications on 8XXX systems with
            DWBUA [unibus adapter].
6. Problem: Self test code constants enabled at wrong time.
   Symptom: None reported from Field, but was discovered during
            internal testing of DMZ32 microcode.
7. Problem: Foreign terminals sending abutted characters lose
            trailing bits.
   Symptom: Files get invalid escape sequence data while editing
            using the "arrow" cursor positioning keys. 

FIELD EFFECTIVITY: Replace Revision E1 or earlier M8398 module with
a Revision F1 or latter to incorporate new UBI microcode version
16 and TIU microcode version 1C when problem/symptoms are evident.
Phase M8398 Revision "F1" module into spares stock by 14 March 1987
as per ECO M8398-MK003. Purge stockroom 17 and all Field Service
Stockrooms by 1 April 1987. 

QUICK CHECK: Presence of ROM 315F4 in location E135, ROM 155D2
in E145. 


FCO KIT ORDERING:
EQ-01457-01  FCO, PARTS
FA-04743-01  FCO only