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- Path: news.mountain.net!usenet
- From: gene_heskett@wvlink.mpl.com (Gene Heskett)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Using Conner/Seagate IDE on OktagonAT
- Date: 08 Apr 96 21:52:29 +0500
- Organization: MountainNet, Inc. Morgantown WV 800.444.1458
- Message-ID: <3563.6672T1312T1474@wvlink.mpl.com>
- References: <4j6it6$rrb@nz12.rz.uni-karlsruhe.de> <2181.6663T762T167@mag-net.co.uk>
- NNTP-Posting-Host: slip3.mpl.com
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
-
-
- JM> In a message on 25-Mar-96 16:50:46, Christian Thomas Hunyaiz
- JM> wrote:
-
- >> Hello everybody,
-
- >> I was trying to use a Conner 40MB IDE-Harddisk (V2.25) with the
- >> Oktagon 2008 AT-IDE controller and encountered some problems. The
- GH>^^^^^^^^^^^^^^^^^^^
-
- >> HD will be recognized by my system, but with the wrong number of
- >> tracks. As long as I do not
- ^^^^^^ It doesn't really matter as long as the
- tracks*heads*sectors-per-track = the drives capacity. *Most* modern
- drives respond to a system query with a set of figures that matches
- the drives capacity, but which may not in fact have any resemblance
- to the actual, internal geometry used by the drives own electronics.
- Now you know why its called IDE, stands for Intelligent Drive
- Electronics.
-
- >> The second problem may be less complicated to solve and arises,
- >> when I try to use a Seagate st3144 Rev1 124MB HD-IDE-Drive on the
- >> Oktagon, which works perfectly well in my A4000 (in fact it was the
- >> built-in drive, when I bought the computer).
-
- >> The Oktagon-controller will correctly write to and load from this
- >> drive, as soon as it has been correctly recognized. But the problem
- >> arises at
-
- JM> Well I'm very baffled by what you say. You're using IDE drives
- JM> with the Oktagon?? The Oktagon 2008 is a SCSI controller, so I
-
- GH> Hey JM, please see my indicated line above. This device *IS* an
- GH> At-IDE card! How do I know? Easy, there's one in my A2k running 2
- GH> drives *right now*. In my case, it actually boots from the 'slave'
- GH> drive!
-
- [deleted the rest of the drivel that *ONLY* applies to the 2008 SCSI
- card, a much more expensive card BTW]
-
- JM> Either I'm totally misunderstanding what you say, or it's a
- JM> problem beyond my knowledge. I'll be interested to see what other
- JM> folk have to say.
-
- GH> Humm, your sig wasn't that far off, now was it, John?
-
- GH> Now, lets get to the problem itself. I suspect this is a slow
- GH> spinup problem, caused at times by the reset line from the
- GH> computer being carried through to the drive, causeing it to also
- GH> reset and re-calibrate itself which could be a several second
- GH> operation, during which it will not respond the the computers
- GH> queries. The computer then thinks theres no drive there.
-
- GH> Now the fix is one thats been described here before. First, make
- GH> sure that the drives hookup ribbon cable has the red striped wire
- GH> on the pin one end of the connector as many of them are
- GH> reversable. Then cut the red striped wire only, bending both
- GH> ends back and tape if they might touch anything metalic.
-
- GH> This is that reset line to the drive. While it could be a problem
- GH> if the drive ever needed a reset, it could only be done with a
- GH> powerdown. Several people have recommended it, and no one that
- GH> I've seen a msg from have had any problems except one fellow
- GH> whose cable *was* reversed/upside down/whatever. So was
- GH> effectively cutting pin 40 instead of 1.
-
- GH> Oh, do be sure to match the 'maxtransfer' value to the size of
- GH> the cache buffer on the drive minus a half k. One thing IDE seems to
- GH> suffer from in the intelligence department is a buffer overrun on
- GH> a write from the computer to the drive. I use 0x0000FFE0 with 64k
- GH> of cache on these drives. Bulletproof!
-
- /* Gene Heskett | I need help, please see my adv. */
- /* CE @ WDTV Weston/Clarksburg WV | in the newsgroup 'alt.tv.jobs' */
- /* <gene_heskett@wvlink.mpl.com> | We are an equal opportunity and */
- #include <std.disclaimer> | all that stuff employer.
-
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