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CUSTOM SCSI PACKETS
2-10
2
status (Note 2)
...1.... CSCSI -- does not
check SCSI status
(Note 2)
....0... SCSI firmware uses
SCSI rules (Note 3)
....1... SASI mode flag --
firmware uses SASI
rules (Note 3)
.....1.. SG -- scatter/gather
enable, use data
points to
scatter/gather table.
During
custom SCSI packet,
you have to set this
bit if scatter/gather
DMA operation is
required
.....0.. SG -- scatter/gather
disable
......1. SYNC -- synchronous
transfers enable
On INITIATOR role,
SCSI firmware
initiates synchronous
data transfer
request.
On TARGET role,
SCSI firmware
initiates synchronous
data transfer
request IF initiator
DOES NOT do so
before first data
phase.