The reference disk settings for a pair of BusLogic cards for use with
SCO Unix 3.2v4 are given below. The settings for the first card are appropriate for a
single card installation also.
|
|
First card |
Second card |
|
BIOS Address |
DC000 |
Disabled |
|
I/O Port Address |
330 |
334 |
|
Arbitration Level |
5 |
6 |
|
Arbitration Fairness |
On |
On |
|
Interrupt Request |
15 |
14 |
|
Data Streaming |
On |
On |
|
SCSI ID |
7 |
7 |
|
Sync Negotiation |
On |
On |
|
Parity Checking |
On |
On |
|
Disk > 1GB disk support |
Off |
Off |
Note that the ADF required is V1.42a as some earlier versions do not
have all of the above settings included, specifically the "Disk > 1GB"
option. This option has to be set to Off for disks greater than 1024 cylinders for use
with SCO Unix; if set to Yes the disk cannot be read by Unix. The "Data
Streaming" option should be left at it's default setting as its feature is not
supported by our current motherboards.
---------------------
Be aware that when using the BusLogic card in the FTe or FTs with the
1.3GB DDS tape drive (Archive Python) that the firmware on the DDS drive must be version
2.56.0. This is the current firmware, so there should be no problem with new systems, but
when upgrading Adaptec based systems the firmware should be checked.
The symptoms of using the original firmware are that Unix 3.2v4 appears
to write to the tape correctly (in fact it has not) but on verification of the tape the
kernel issues various error messages such as "Medium error", "Unit
attention: Drive or bus reset", "Hardware error: Unexpected internal error"
etc. The SCSI bus could also hang, especially if attempts are made to wake up the tape
drive by killing hung cpio processes etc.
The firmware is available from our Hardware Support group and its part
number is 13186330.
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