[rescue] SCSI adapter help...

[Joshua Newton]

I'm making a last effort to try and get some of my new gear working -- 
at the moment, my biggest problem is the SCA<->50pin adapters and WD SCA 
drives I bought to put in the Indy and Indigo2. I'm hoping someone will 
be willing to help me troubleshoot.

The adapters are relatively simple, and come with a clearly written 
sheet of instructions. The jumper block is labeled as follows:

LED
SYN
DLY
MTR
ID3
ID2
ID1
ID0

The DLY and MTR options control forced delay and remote delay. SYN is 
for some kinc of SCA sync option, apparently. The others should be 
obvious. The adapter instructions do say that the settings on the 
adapter and on the drive should be exactly matched, at least as far as 
SCSI ID, and I've been doing that. I've also fiddled with a few other 
jumpers on and off, and the Indy I'm connecting these drives to always 
claims that there's been a SCSI controller failure if this drive is the 
only one connected -- just like if there's nothing at all attached to 
the bus. It also doesn't get recognized if it's attached along with 
another, working (50pin) drive. I've also fiddled as best I can with 
termination options.

The jumpers on the drive are a lot more complex, and I don't pretend to 
understand half of them. The WD site lists only two jumper layouts for 
SCSI drives, and this is not one of them. Here's the jumper block 
labeling from the drive top label:

RSVD (reserved?)
RSVD
LED+/RSVD
RSVR
TXD/RXD
RSVD
D TRGT INIT
D UNIT ATTN
SCAM
DLYD START
RMT START
RSVD/LED+
RSVD/LED-
SCSI ID3
SCSI ID2
SCSI ID1
SCSI ID0

The drive comes with RMT START and D TRGT INIT jumpered by default. I've 
tried both jumpered and unjumpered. I've also tried the drive on all the 
SCSI ID jumpers, both matched with the adapter and not matched. I've got 
no clue what to do next.

I'd dearly appreciate any help I can get.