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21020285 D User’s Guide
Chapter 4 Command Operation
Page 4 - 10 Single Command Structure
Interrupt
This field selects the Interrupt level which the RF3880 adapter will use when
the command issued through the Single Command structure completes. You
can also denote the resultant interrupt acknowledge ID that the adapter will
place on the data bus in response to the Host. The Interrupt field uses these bit-
meanings:
ID Status/ID - This byte denotes the Status/ID value that the adapter will
provide to identify the interrupt being acknowledged by the Host.
INT Interrupt Level - You may elect to use any one of the following levels
for adapter interrupt:
000 — Interrupt disabled
001 — Interrupt level 1
010 — Interrupt level 2
011 — Interrupt level 3
100 — Interrupt level 4
101 — Interrupt level 5
110 — Interrupt level 6
111 — Interrupt level 7
Status Block - The Status Block is the means by which the RF3880 adapter
communicates successful command completion, error conditions, retry
information or SCSI Sense Bytes. Status Block information specific to the type
of command you issued can be found in Chapters 5, 6 and 7.
Note
If you have set the ISB
(Issue Status Block) bit
in the Retry Control field
of the Unit Options or
Extended Unit Options
command, it will be
ignored for commands
issued through Single
Command structure.
If the status from a command issued within a Single Command structure
requires multiple Status Blocks to report the status, only the last block is saved
in the structure.
BITS
1514131211109876543210
00000 INT ID
Table 21: Bit-meanings of Interrupt Field