Appeal No. 97-2982 Page 6
Application No. 08/219,554
seq.) when a UNIT ATTENTION condition exists. The
commands to be sent and received between the hosts
and targets such as ATTENTION DATA, CHECK CONDITION,
giving a warning, resending the warning, REQUEST
SENSE, getting the sense key, checking UNIT
ATTENTION are SCSI standard commands which are
followed by Fischer as shown on column 24, lines 53-
54. Fischer teaches the environment in which the
inventive method is executed, but doesn't provide
all of the details of SCSI operation claimed by the
Applicant. Fischer describes that when the
controller detects an error during a device
operation the Queue Descriptor which is in memory
for each deceive is checked as shown on column 32,
lines 42-64. Fischer describes that EACH HOST has
memory allocated for EACH TARGET for SCSI commands.
The commands to be sent and received between the
hosts and targets such as ATTENTION DATA, CHECK
CONDITION, giving a warning, resending the warning,
REQUEST SENSE, getting the sense key, checking UNIT
ATTENTION are SCSI standard commands. (Id.)
The examiner reasons, “[s]ince Fischer suggests SCSI operation
in accordance with the ANSI standard, the artisan would have
ben [sic, been] motivated to implement SCSI operation in
accordance with this standard.” (Id. at 4-5.)
Regarding ANSI, the examiner asserts, “[t]he SCSI
standard teaches how a SCSI initiator works with just one
memory unit connected to one host which is an equivalent
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