_ DEC-O-LOG for RF72

_ DOL, RF72-O001, RF72 Disk Drive for VAX 6000, DS5000, VAXft, AUG 91
 
AUG 91 - PROBLEM: "Command Timeouts" caused by corrupted
list pointer for the DSSI Interface Chip and excessive
BBR's. 2. Improper reporting of MSCP End Packet Status 
for "Compare Host Data" command processing block with
"Forced Error Flag Set".(V256) 3. Fixes problem with 
Verify utility reporting "Primary " revectored block as
"Non-Primary" and vice versa. (V256) 4. BBR's resulting
from marginally good blocks. (V256) 5. ADDA chip diagnostic
failing on acceptable devices. (V256) 6. Improved algorithm
for read/write test data. (V256) 7."Command Timeouts" problems
have been identified by Engineering affecting the VAX 6000, 
DS 5000 and VAXft sys.(V255) 8. Unacceptably high ECC uncor-
rectable errors reported running DRVTST (locas to DUAP) (V255)
9. Intro of Single Crystal Ferrite (SCF) heads requires changes
to read-after-write timing. (V255) 10. Possibility of inconsistent 
Revector Control Table(RTC). (V255)

FIELD EFFECTIVITY: This "O" coded FCO should be installed in
all RF72 option revision C01, installed in VAX 6000, DS 5000
and VAXft systems.

QUICK CHECK: Check Option revision label for "E01", module 
revision "D02". The RF72 module  54-19091-01 Rev. D02 will 
have a new ROM in location E-4. The new ROM is identified by
DIGITAL P/N 23-015EA-00, module revision E02 will have a new 
ROM P/N 23-024EA-00.
Module check, the "Stat Config" command in PARAMS will display
the firmware revision as "Software RFXX V256 built 17-May-1991".
Refer to the RF72 Users Guide.

The DEC on-site labor charge will be the time required to
install and test the FCO at the then current hourly rate.

FCO KIT ORDERING
EQ-01617-04
FA-04950-04