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User’s Guide 21020285 D
Chapter 7 Board-control Commands
Board Information (15H) Page 7 - 33
Options
The Options field is one byte wide with the following format and bit-meanings:
FMT - This bit determines whether the data returned with the Board
Information command will include information about all possible SCSI ID’s
(16) or will retain compatibility with previous adapters that were limited to 8
ID’s on a bus.
0 ⇒Use 8 ID format.
1 ⇒ Use 16 ID format.
The format of the Data Structure returned from the Board Information
command is illustrated in the follwoing table.
Board
Information
Data Structure
The Data Structure returned by the Board Information command has two parts.
The first part of the structure consists of a special header primarily containing
General Board Information (including hardware configuration).
The second part of the returned structure consists of eight or sixteen blocks of
data (dependent on the setting of the FMT bit in the Options field of the Board
Information command). These blocks describe the Unit Options that are set for
each target attached to the RF3880. The first block corresponds to SCSI ID 0,
the second to SCSI ID 1, etc.
Each of the fields of this Data Structure are described above and on the
following pages.
BITS
76543210
0FMT0
Table 90: Board Information Options Field
Address
Offset
Byte Memory Address
Offset + 0 Offset + 1 Offset + 2 Offset + 3
General Board
Information
Header
00H FW Rev. Eng. Rev. Bus Throttle Select Flags
04H Option Flags Day Month Year
08H Firmware Number on Even Prom
0CH Adapter Base Model # SCSI Cfig Block Termination
10H Reserved
14H Sense Count Retry Limit Disconnect Time-out
Per Target
Information
18H Synch Offset Synch Period Device Flags
1CH Width Reserved
20H Sense Byte # Sense Byte # Sense Byte # Sense Byte #
24H Sense Byte # Sense Byte # Sense Byte # Sense Byte #
28H Sense Byte # Sense Byte # Sense Byte # Sense Byte #
2CH Sense Byte # Sense Byte # Sense Byte # Sense Byte #
thru
1D0H
Target information repeated up to fifteen more times —
depending on setting of Options field (in command).
Table 91: Board Information Data Structure