Hardware Issue or Software Issue cybppc.device

[my_pc_is_amiga]

I'm attaching a first time error log and assume it came phase5 cybppc.device 44.67.   This is running on 3.1.4.1.   I haven't seen it a second time yet and so not sure what caused it.  Anybody knows what this is saying?  Why was there a "Unexpected Disconnect"?

[my_pc_is_amiga]

These are just scsi wide hard disks (only 2 of the one the bus).  One of them is at scsi address 6 and the other at SCSI address 3.  I did put active terminators on both ends but will double check nothing else is strange with some hard disk jumpers.   Strange thing is that this is not happening often as I would expect to see more errors.

I'm attaching a first time error log and assume it came phase5 cybppc.device 44.67.   This is running on 3.1.4.1.   I haven't seen it a second time yet and so not sure what caused it.  Anybody knows what this is saying?  Why was there a "Unexpected Disconnect"?

What kind of device is this? If there are CDRoms on the bus, you want to enable the disconnect/reconnect capability of the SCSI bus (hoping that the device supports it). Apparently, some device disconnected without this part of the protocol being enabled.

Could also be a generic problem on the bus, such as termination or bad cabling.

[my_pc_is_amiga]

I have 2 Seagate ST318452LW drives.  I just pulled them out now and the only jumpers set are for the SCSI ID 3 on 1 drive and SCSI ID 6 on the other.   

I have been some research and according to these old posts, TERM power needs to be supplied to SCSI bus and drives should be in SE mode.

https://forum.amiga.org/index.php?topic=54626.msg582064#msg582064


Seagate manual:
https://www.seagate.com/support/disc/manuals/scsi/100139872a.pdf (Figure 17 has the jumper setting info).   According to the Seagate manual, DIFFSNS signal will determine singe-ended or differential automatically and so I shouldn't need to use the SE jumper to force.

The only thing I could set is the TERM power jumper on the drive even though I don't see TERM power mentioned in CyberstromPPC manual.

[my_pc_is_amiga]

Based on this info from the Seagate manual, the ultra wide scsi on the PPC card should be operating in LVD mode (since the PPC manual says 40 M/s transfer max. rate).

Seagate Manual:
"When the interface “DIFFSNS” line is between +0.35 V and +0.5 V, the drive interface circuits operate singleended and up to and including 20 M transfers/s (Fast-20 or Ultra SCSI). When “DIFFSNS” is between +0.7 V
and +1.9 V, the drive interface circuits operate low voltage differential and up to and including 80 M transfers/s
or less (Fast-40 or Ultra160 SCSI)."

[my_pc_is_amiga]

Mmm...seems that "Disconnect control is not used."    But somehow the drive did it -- probably from some error.  Anyways, I've enabled TERM power to SCSI bus on 1 drive and will continue to see if this error comes back.   

Wondering if there any tools to run the "Drive Self Test"?