Problems with a SCSI chain in CyberStorm PPC

What I've tested:
Tested with various adapters, and two different SCSI cables.
Tested the RAM:
Chip + Fast with: sysdiag-0.1.4 - Result: All tests pass.
PPC Mem with: PPC-Memtest - Result: All tests pass.
Term power on and off on the HD
Term on/off on the CD ROM
FastSCSI-II adapter with and without high bits term.

I've also tried with lots of different Masks and Max Transfers. Mask seems to make little difference, but the lower the Max Transfer, the more data it can move before it crashes.

How the devices are configured:
The Harddrive, Seagate Barracuda ST318437LW is set to device id 1. No other jumpers are set.

Regarding TE on J2 on my HD, the manual states:

Quote:

---

TE (Applies only to the N and W models)
On With the jumper installed, the onboard (non-removable) terminator circuits are enabled (connected
to the I/O lines). Default is jumper installed.
Off Terminator circuits not enabled (not connected to I/O lines).

---

Since my model is LW, and not N or W. Then I assume that this doesn't matter for my drive.

My CD Rom is set as id 5. No term is set on it. It's a Plextor Ultra Write 40x.

The chain:

Code:

---


#####  ######  ######  ######  #####
#  #  #    #  #    #  #    #  #  #
# A #--# CD #--# HD #--# CS #--# A #
#  #  #    #  #    #  #    #  #  #
#####  ######  ######  ######  #####

---

Legend:
A = Active wide terminator
CD = 50 pin (Fast SCSI-II) CDROM
HD = 68 pin Wide SCSI Harddrive
CS = CyberStorm PPC

MODS:
I suggest that you close this thread. And move these posts to the HD crash thread. So can Kin and I continue there.

Please split out, and merge this thread from post #4 (above) to this thread: "Huge file operations end in DH0 crashed"

Thanks, and thank you Kin! I trust you when you say it's not overclocking.

@ thread....

Ang on a minute....ffs! :roll:

I just said on the other thread I'll abstain & talk to Arnljot here about his SCSI issues, so please, don't close this thread.

@ Arnljot

I did ask one simple question m8. Do you have an external Exapnsion Port from the SCSI on the CSPPC SCSI header cable. Yes or no is the only answer I need & then we can go from there.
It's very important before we discuss further. :)

Charlie

Sorry for the long reply.

The illustration says: No :)

All is internal. On one side of the controller: Term, on the other: Hd, CD, Term.

I know Charlie asks for no intervention, but one thing must be said: TE means Termination Enabled.

If you set this jumper on the HD, actually you are installing another active termination to the SCSI chain! Remove the jumper if you have more devices attached.

TE is removed from my hd. And per manual, it wouldn't have mattered either as my HD doesn't support it, it's a LW model. And it's only supported on N and W devices.

And just to repeat while we wait for charlie. There are no external devices on my chain.

Quote:

---

Originally Posted by arnljot

<snip>

And just to repeat while we wait for charlie. There are no external devices on my chain.

---

Meaning you've probably cocked up the whole Termination of the bus.

Starting over, the CSPPC & CSMKIII cards are fitted with a SCSI III controller. This controller is not phisically terminated, so the entire cable length requires termination at it's extreme-most ends.

So, lets say you wanted 3 SCSI devices in your Amiga. IE, 2 x hard drives & 1 x CDROM for example. Your cable needs to do this.

Active Term pack - a 68pin cable IDC header to CSPPC SCSI header. on the other side, the cable is best run to the hard drives with ID's 0 & 1, CDROM set to id 2. After the CDROM the cable must be terminated with an Active term pack.

Does that make sense so far? I can upload a rough sketch if you need a graphical representation.

Also, as of this post, I'm off line untill tommorow afternoon.

Cheers,

Charlie

You describe my exact setup Kin :-(

---------- Post added at 21:28 ---------- Previous post was at 21:13 ----------

Quote:

---

Originally Posted by arnljot

The chain:

Code:

---


#####  ######  ######  ######  #####
#  #  #    #  #    #  #    #  #  #
# A #--# CD #--# HD #--# CS #--# A #
#  #  #    #  #    #  #    #  #  #
#####  ######  ######  ######  #####

---

Legend:
A = Active wide terminator
CD = 50 pin (Fast SCSI-II) CDROM
HD = 68 pin Wide SCSI Harddrive
CS = CyberStorm PPC

---

Code:

---


#####  ######  ######  ######  #####
#0  #  #1  #  #2  #  #3  #  #4  #
# A #--# CD #--# HD #--# CS #--# A #
#  #  #    #  #    #  #    #  #  #
#####  ######  ######  ######  #####

---

So to further specify:

Legend:
0: Active term, 68 pin. On the end of the cable
1: CD ROM Fast SCSI III, 50 pin. Adapter from 68 pin
2: HD, 68 pin. No term set.
3: CS Scsi controller
4: Active term, 68 pin. On the end of the cable

All of this is inside the cabinet.

All is on a 68 pin cable.

So the last resources: swap the cable, it may goes bananas.

Also swap the terminators, they may get bananas.

Set the device ID of the devices in a regular way: 0 for the boot disk, 1 for the second HD, 3 for the CD. Remember to use term_power jumper in one (and only one!) HD to provide power to the terminators.

Also try without the CD hooked in.

I will try without the CDROM in.

TE:
Seagate Barracuda ST318437LW on "TE" on jumper block "J2", the manual states:
Quote:
TE (Applies only to the N and W models)
On With the jumper installed, the onboard (non-removable) terminator circuits are enabled (connected
to the I/O lines). Default is jumper installed.
Off Terminator circuits not enabled (not connected to I/O lines).
Since my model is LW, and not N or W. Then I assume that this doesn't matter for my drive.

So maybe this drive is a lost cause. Maybe it cannot be used since it doesn't give term power?

Can I set it on the CDROM?

CD-ROM does not have a termination power jumper. Only HD have it, as far as I saw in my wast SCSI experience.

You can set the T_P jumper in the other HD.