Hello:
Here we go, I have just installed a new seagate scsi hard drive and I am still receiving errors.
NeXT Rom Moniter 2.4 (v65)
Starting Extended Self Test
Extended SCSI Test
System test failed Error Code 65
Boot Command: sd(0. 0. 0)
boot sd(0. 0. 0)
SCSI Bus Hung
NeXT>
If more info is needed please request and I will do my best to supply. Also this is a hard drive I bought that is the exact same as the one that was in the original stock machine and can see no reason why I would be sold a defective one therefore I am hoping this is a configuration problem, see what you can do.
Last and not least I have the software for NeXTStep 3.3 and need whatever has to be done taken care of so I can install it, it is on 3.5 diskettes.
Quote from: "drshmooz2001"
If more info is needed please request and I will do my best to supply. Also this is a hard drive I bought that is the exact same as the one that was in the original stock machine and can see no reason why I would be sold a defective one therefore I am hoping this is a configuration problem, see what you can do.
Knowing
which drive you have would tell us how old the drives are which is useful information. The NeXT SCSI implementations were always a bit touchy about SCSI signal integrity. In particular, you have to get termination correct, should force single-ended operation when the drive offers the option, and spin up on poweron. Though that said, I run a 25-30 foot SCSI bus using a repeater and very well-made cables.
The hard drive is a segate st1480n 426 or 430mg. Is there a keyboard command that might help, and what do I need to do to install software NextStep 3.3 I do not understand most of your reply, what do I need to do to resolve problem?
Quote from: "drshmooz2001"I do not understand most of your reply, what do I need to do to resolve problem?
Education and effort, I'd guess. Go find a datasheet for the ST1480 that shows all the jumper settings. Replicate old drive settings on new drive then verify that they make sense with the datasheet. Drive is sufficiently old that might actually use resistor packs to implement termination. (Some of my old drives did.) In this case, you'll need to move that over as well.
This is a 50 Pin hard drive made by Seagate. Where do I find jumper settings and how do I change them? :?:
I have tried jumper settings 2, 4, and 5
Still get message below when I try to install (b) diskette
Boot Command: sd(0. 0. 0)
boot sd(0. 0. 0)
SCSI Bus Hung
NeXT>
Quote from: "drshmooz2001"I have tried jumper settings 2, 4, and 5
Still get message below when I try to install (b) diskette
Boot Command: sd(0. 0. 0)
boot sd(0. 0. 0)
SCSI Bus Hung
NeXT>
Okay, I can't make out the diagram in the links being posted. The special characters are being rendered as katakana for me and even when I override that, it still doesn't make a great deal of sense. So I started digging around my doc piles (used to have the habit of religiously keeping hardcopies of all equipment manuals for gear - and just found my ld-v8000 service manual as a result). That didn't turn up anything but I then turned to my dead disk collection and I have an st1480n. On the underside are three sideways-facing sockets which take resistor packs for termination. My resistor packs are labeled 'L850221331 453' so they're probably either 330 or 45k ohm packs. Scsi faq suggests these will be 330 ohm which is more reasonable for transmission line termination. So you either need these or a separate terminator or another device that can terminate. Left side J6 has 2, 5, 7, and 8 shorted. That's drive spinup on J6.2 but I can't tell what the other three are. J7 on the front has the second from right shorted. Think this is spindle sync but, again, can't tell from the picture. And my scsi ID is set to 1 so this probably was my system disk sometime in the mid '90's.
Someone who can actually make sense of the pictures might make a sensible version. I think we just need to make a simple replacement with some dingbats and it will be clear.
It seems that
http://www.seagate.com/support/disc/specs/scsi/st1480n.html is in the text encoding "Western (IBM-850)". Since that is rarely used (from what I've seen), that may be why it displays wrong and doesn't automatically switch to it. Also, the page has no <html> or <body> tags (!).
Eric
Termination jumper 1 and 8, all systems passed. Bus Hung requires cd-rom!
Quote from: "drshmooz2001"Termination jumper 1 and 8, all systems passed.
There is no 'Termination jumper 1'.
Quote from: "drshmooz2001"
Bus Hung requires cd-rom!
I have no idea what this means. 'Slow Taxi requires Tuna'? 'Delayed Game requires Newspaper'? Subject line suggests everything is okay. 'Bus Hung' suggests otherwise.
Quote from: "cubist"I have no idea what this means. 'Slow Taxi requires Tuna'? 'Delayed Game requires Newspaper'?
Perhaps the scsi bus hang has affected his speech center... table dog purple liquify
He may be referring to the situation where the bus is not getting enough termination power without an external device attached. I have one station that gets a scsi bus error if I do not have a terminator or external device attached to the rear scsi port.
After my initial post in this thread, I've exchanged a couple of PMs with drschooz.
I think what he's trying to say is that after setting the SCSI ID to 0ne and experimenting with the termination setting, the SCSI bus is no longer "hung" and that the system now recognizes his drive and is now looking for the install CD. He does not, however, have a SCSI cdrom drive. So he's stuck until he gets a SCSI cdrom drive.
James
Quote from: "nextchef"I have one station that gets a scsi bus error if I do not have a terminator or external device attached to the rear scsi port.
NeXT's scsi implementations are sensitive to termination. Speaking of which, I've been trying to collect chip datasheets for major components, the scsi being one of them. Turbo Cube (and I'd guess other black hardware) uses the old NCR 53c90. I tried googling a datasheet for this without luck. If someone has it, could we get it in the archive here?
Quote from: "cubist"Speaking of which, I've been trying to collect chip datasheets for major components, the scsi being one of them. Turbo Cube (and I'd guess other black hardware) uses the old NCR 53c90. I tried googling a datasheet for this without luck. If someone has it, could we get it in the archive here?
This is the only document that I have so far on the 53c9x series SCSI controller.
http://www.nextcomputers.org/NeXTfiles/Docs/Hardware/Datasheets/NCR53C9X_SCSI_Controller.txt
Quote from: "Nitro"
This is the only document that I have so far on the 53c9x series SCSI controller.
Not a bad start and in good ol' ASCII to boot, no friggin' bizarre encodings to mess up the text. Wanted to see how they handled termination at the controller end of things but didn't see it in the doc. With no external cable connected, termination should come from the controller drivers, I think. The traces to the external connector are short so don't behave too much like transmission lines. But without termination at the controller, the drives will receive a bounced signal. With a cable connected, termination is needed at the cable end and in this case, the controller needs to go high-impedance. At least this is how I imagine it should work...
I emailed NCR and received a rather quick response :P
Heres the email.
You may wish to contact Jeff Opt at the Montgomery County Historical Society at jopt@daytonhistory.org. The society now holds and manages all of NCR's archives and may be able to assist you with locating the document you describe.
Regards,
NCR Webmaster
Boot diskette requires cd for cd-rom software NeXT Step 3.3 cd operating system, b fd, Does minimalism give a clue? :!: :P No questions no opinion, no onion peeling.
Something to do with cd-rom, would anyone have one available for sale?