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- Path: mercury.galstar.com!usenet
- From: wizard@galstar.com (David Templeton)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Removing on-board termination from GVP SCSI Controller
- Date: 29 Feb 1996 17:15:01 GMT
- Organization: Galaxy Star - Northeastern Oklahoma Internet
- Message-ID: <2661.6633T4T1160@galstar.com>
- References: <4gviq9$6tc@news1.io.org>
- NNTP-Posting-Host: star091214.galstar.com
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
-
- >My apologies to anyone reading this post (more or less) twice, but I
- >thought I'd have more luck if I brought it out of the previous thread
- >(concerning zip drives).
-
- >I have a gvp scsi controller that I am trying to get to work with a new
- >zip drive. It appears that the problems I am having with the controller
- >is that the scsi chain is being terminated before it gets to any external
- >devices, and I have been advised to remove the termination from the scsi
- >controller itself, the on-board harddrive, or both. Unfortunately, I
- >have not been able to locate my manual anywhere (four years of moving
- >back and forth to school.....), and I haven't been able to figure out
- >what to do just by looking at the board.
-
- >So, does anyone have experience with this board and feel up to giving
- >some nice, step by step instructions?
-
- >The board in question is:
-
- > GVP Impact Series II Hard-Disk+RAM-Card
- > Model A2000-HC811
- > gvpscsi.device version 4.5
- > board itself says: Series II, Rev II
- > with a 120 meg Maxtor HD attached to the card
-
-
-
- It more likely you need to upgrade your ROMs. I have v4.13 (four-point-
- thirteen) vice (four-point-five). I was told the same thing about the GVP
- Series II and the on controller termination..so I desoldered, YES desoldered
- cause the termination isn't socketed on the GVP Series II. You would think
- that would be an indication that it wasn't meant to be removed. Anyway I
- listened to a so called expert here that even cliamed to design SCSI
- controllers. I desoldered them vice just cutting them off and guess what? the
- damn thing wouldn't work no matter what I did. I tried every combination of
- termination, non-termination ect.. and it just refused to work without the
- terminations on the controller. So I soldered sockets on my controller and
- reinstalled the resistor packs and ordered a ROM upgrade and my CD-ROM worked
- fine.
-
- Don't be to eager to go chopping off pieces of your controller that the GVP
- engineers incorperated into the design. It's much eaiser to replace the
- firmware.
-
-
- The drive mounted to the hardcard should already have the termination
- resistors off, but if not look on the bottom of the drive near the connector &
- there should be 2 long resistor packs that are socketed. If you have more
- than one internal drive then the last drive on the internal chain needs to
- have the termination packs installed. Also the last device on the external
- chain needs to be terminated, even it it's the only external device.
-
- --
-
- Email: wizard@galstar.com
-
- WWW: http://www.galstar.com/~wizard
-
- Member <TEAM AMIGA>
-
-
- "Good Enough" is the death knell of progress.
-
-