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Home▸ Forums▸ 68kMLA▸ SCSI, PCI and Bus errors. — #1
Post #1 by coius
Source Forum68kMLA
CategoryTroubleshooting
Post DateTue, 17 Jun 2008 - 03:14
Original URLhttps://68kmla.org/bb/threads/scsi-pci-and-bus-errors.13609/
Post
I just spent the better part of the afternoon troubleshooting a Power Macintosh 9500 w/ a 333Mhz G3 Upgrade card (MAChSpeed ZIF Carrier) and went through hell. I can see what people mean when they talk about the cases on this. I currently have part of a fingernail torn off, several cuts on my hand, as well as a few bandages where I picked a small piece of metal right into the middle of my finger. Joy...

Also, I had been working with SCSI (Oh Joy!) and found out the reason WHY the guy before me had so many problems. This is the setup:

PCI SCSI Card (SCSI-2 + LVDS port 68-pin). This has a 18.3GB SCSI Drive on it, as well as a 4.2GB SCSI Drive. Both oddly, terminated as well as the same ID (sounds like the guy doesn't understand SCSI?)

Internal PowerMac Bus: Zip Drive. and CD-RW (8x4x24) SCSI. Both of them same ID. *NO* termination.

Then there comes the PCI problems:

Video card works. It's fine, but the guy had an ethernet card that was half-way in. I fixed that but still had problems. It turns out his USB Card wasn't functioning right.

In total, I think I fixed ~ 19 Problems with this machine. I am not sure if I have the bugs ironed out, but I have never wrestled with as many demons in my life on a computer as much as I have with THIS THING.

I threw an External DVD-RAM on the SCSI Bus (DB-25) and replaced the Zip drive with a Jaz Drive. I also moved the Jaz drive to it's own bus (main SCSI Bus) and the CD-RW is now on the same bus as the external SCSI (remember, the 9500's had two internal SCSI Buses, one shared with the DB-25 por).

The interesting thing about the SCSI Card is that it has 4MB Cache w/ battery backup for the cache. It's an Adaptec card and from what I see, this machine was a server at one point. It had some software on it but I was unable to transfer it. One thing it had on it was filemaker, but it didn't want to launch. I assume corrupted drive(?)

Anyways, I am low-level formatting the harddrives, and will put OS 8.1, OS 9.2.2 (with OS9 Helper) and 10.3 since I got the G3 upgrade. It's going to be an awesome machine.

These are the specs:

PowerMac 9500 Case and board

XLR8 MAChSpeed ZIF Carrier w/ 266Mhz G3 CPU. sadly, it's overclocked to 333Mhz, but it seems quite stable

Adaptec RAID Card with 4MB Battery-backed Cache w/ 4.2GB as ID 0 and 18.3GB as ID 1. 18.3 is last device on it, and is terminated

Iomega Jaz 2GB. 8x4x24 CD-RW (SCSI) on two separate SCSI Buses (CD-RW on external SCSI Bus)

Mach64 ATI PCI Card. No idea how much ram. Can't be much since it only does thousands @ 1152x834 or something like that...

No Floppy (was taken out for Jaz Drive)

External DVD-RAM

352MB RAM. Interleaved too!

The video card will be replaced with a Radeon 7000 32MB PCI w/ DVI/VGA/S-Video

I can't wait to get this thing up!