From owner-freebsd-scsi Tue May 30 11:55:54 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from lsi.lsil.com (lsi.lsil.com [147.145.40.2]) by hub.freebsd.org (Postfix) with ESMTP id 0408637B505 for ; Tue, 30 May 2000 11:55:39 -0700 (PDT) (envelope-from pdelaney@lsil.com) Received: from mhbs.lsil.com ([147.145.31.100]) by lsi.lsil.com (8.9.3+Sun/8.9.1) with ESMTP id LAA10218 for ; Tue, 30 May 2000 11:55:31 -0700 (PDT) Received: from inca.co.lsil.com by mhbs.lsil.com with ESMTP; Tue, 30 May 2000 11:55:21 -0700 Received: from exw-kansas.ks.symbios.com (exw-kansas.ks.lsil.com [153.79.8.7]) by inca.co.lsil.com (8.9.3/8.9.3) with ESMTP id MAA19443; Tue, 30 May 2000 12:55:12 -0600 (MDT) Received: by exw-kansas.ks.lsil.com with Internet Mail Service (5.5.2650.21) id ; Tue, 30 May 2000 13:54:36 -0500 Message-Id: From: "Delaney, Pam" To: "'Lee Cremeans'" , freebsd-scsi@FreeBSD.ORG Subject: RE: Symbios dual ultra-wide woes Date: Tue, 30 May 2000 13:54:35 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01BFCA68.7FFA5EEC" Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01BFCA68.7FFA5EEC Content-Type: text/plain; charset="iso-8859-1" Lee - The 22801 specifically prohibits using the configuration you show. You can use all narrow or all wide, but cannot mix wide and narrow (in general). If the 22801 is at the end of the bus, termination at the board is enabled. If the 22801 is in the middle of the bus, the board will terminate the upper 9 lines if the cable is narrow, otherwise no termination is used. You have a wide cable and a narrow cable, the board hardware defaults to the wide bus case and provides no termination at all. Thus the upper 9 lines are floating. Options: 1) Use different channels (the board will autoterminate each channel). 2) Get a cable that terminates the upper 8 bits. I checked the web and CS electronics does manufacture a cable (T68D I think) that is a 68->50 with termination at both ends. You will need something like: term ---68->50 cable---term Cables that terminate only one end will not work, because the signal being applied to the 22801 has to look like it is coming from a narrow bus. -pamela > -----Original Message----- > From: Lee Cremeans [mailto:lcremeans@erols.com] > Sent: Monday, May 29, 2000 7:23 PM > To: freebsd-scsi@FreeBSD.ORG > Subject: Symbios dual ultra-wide woes > > > I just got a Symbios SYM22801 (53C876-based) card handed to > me last week, > and I decided to put it in my machine to replace a > less-capable Adaptec > AVA-2904. I've run into an interesting problem. I'm not sure if it's > cabling-related or not, but the cables do seem to make a difference. > > Here's how my setup works: > > ID 5 ID 6 > +-----------------+ +-----------------+ > | UMAX scanner |----narrow SCSI---| Archive DDS-1 | > | (Astra 1220S) | | | > +-----------------+---terminator +-----------------+ > | > | > CS Electronics 68-pin VHDCI<->50-pin Amphenol cable -->| > | > +----------------------+ > | (ext 68-pin) | > | SYM22801 channel B | > | | > | (int 50-pin) | > +----------------------+ > | > | ID 4 > +----------------------+ > | TEAC CD-R55S | > | (terminated) | > +----------------------+ > > Now, here's the interesting part. > > - When I have *only* the external cable connected, the > channel works without > errors. > > - When I have *only* the CD-R55 connected, it also works fine. > > - If I have the external stuff on channel A, and the internal stuff on > channel B (or vice versa), that works. > > - However, when I have both connected to channel B, I get this mess: > > sym1:4: ERROR (0:48) (2-21-0) (f/35) @ (scriptb 2e8:11000020). > sym1: script cmd = 88080000 > sym1: regdump: da 10 80 35 47 0f 04 0a 01 02 00 21 80 01 09 > 00 00 52 dc 01 > 08 ff ff ff. > (noperiph:sym1:0:-1:-1): SCSI BUS reset detected. > > over and over again, until I reboot the machine. I've not yet > tried the old > ncr driver on it. I've tried setting the channel switches to > INT50 ON and > HIGH TERM ON, but to no avail. > > I could put the CD-R on channel A for now, but when I get a > SCSI disk to > go there, I want to reserve channel A for it and other-high > speed stuff, and > channel B for the slow things. Any idea what's going on here? > > -lee > > -- > +--------------------------------------------------------------------+ > | Lee Cremeans -- Manassas, VA, USA (WakkyMouse on > WTnet) | > | lcremeans@erols.com | http://wakky.dyndns.org/~lee | > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-scsi" in the body of the message > ------_=_NextPart_001_01BFCA68.7FFA5EEC Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable RE: Symbios dual ultra-wide woes

Lee -

The 22801 specifically prohibits using the = configuration
you show.  You can use all narrow or all wide, = but
cannot mix wide and narrow (in general).

If the 22801 is at the end of the bus, = termination
at the board is enabled.  If the 22801 is in = the middle
of the bus, the board will terminate the upper 9 = lines if
the cable is narrow, otherwise no termination is = used.
You have a wide cable and a narrow cable, the = board
hardware defaults to the wide bus case and provides = no
termination at all.  Thus the upper 9 lines are = floating.

Options:
1) Use different channels (the board will = autoterminate
    each channel).
2) Get a cable that terminates the upper 8 = bits.  I checked
    the web and CS electronics does = manufacture a cable (T68D
    I think) that is a 68->50 with = termination at both ends.
    You will need something = like:
         = term ---68->50 cable---term
    Cables that terminate only one = end will not work, because
    the signal being applied to the = 22801 has to look like it
    is coming from a narrow = bus.
  
        -pamela

> -----Original Message-----
> From: Lee Cremeans [mailto:lcremeans@erols.com]
> Sent: Monday, May 29, 2000 7:23 PM
> To: freebsd-scsi@FreeBSD.ORG
> Subject: Symbios dual ultra-wide woes
>
>
> I just got a Symbios SYM22801 (53C876-based) = card handed to
> me last week,
> and I decided to put it in my machine to = replace a
> less-capable Adaptec
> AVA-2904. I've run into an interesting problem. = I'm not sure if it's
> cabling-related or not, but the cables do seem = to make a difference.
>
> Here's how my setup works:
>    
>       ID = 5            = ;            = ;           ID = 6
> = +-----------------+         = ;         = +-----------------+
> |  UMAX  scanner  |----narrow = SCSI---|  Archive DDS-1  |
> |  (Astra 1220S)  = |           =      = |            = ;     |
> = +-----------------+---terminator     = +-----------------+
>       =         =         =         =         =         =        |
>       =         =         =         =         =         =        |
> CS Electronics 68-pin VHDCI<->50-pin = Amphenol cable -->|
>       =         =         =         =         =         =        |
>       =         =         =              = +----------------------+
>       =         =         =              = |     (ext 68-pin)     |
>       =         =         =             = |  SYM22801 channel B  |  
>       =         =         =              = |            = ;          |
>       =         =         =              = |     (int 50-pin)     |
>       =         =         =              = +----------------------+  
>       =         =         =         =         =         |
>       =         =         =         =         =         |  ID 4
>       =         =         =              = +----------------------+
>       =         =         =              = |    TEAC CD-R55S      |
>       =         =         =              = |    (terminated)      |
>       =         =         =              = +----------------------+
>
> Now, here's the interesting part.
>
> - When I have *only* the external cable = connected, the
> channel works without
> errors.
>
> - When I have *only* the CD-R55 connected, it = also works fine.
>
> - If I have the external stuff on channel A, = and the internal stuff on
> channel B (or vice versa), that works.
>
> - However, when I have both connected to = channel B, I get this mess:
>
> sym1:4: ERROR (0:48) (2-21-0) (f/35) @ (scriptb = 2e8:11000020).
> sym1: script cmd =3D 88080000
> sym1: regdump: da 10 80 35 47 0f 04 0a 01 02 00 = 21 80 01 09
> 00 00 52 dc 01
> 08 ff ff ff.
> (noperiph:sym1:0:-1:-1): SCSI BUS reset = detected.
>
> over and over again, until I reboot the = machine. I've not yet
> tried the old
> ncr driver on it. I've tried setting the = channel switches to
> INT50 ON and
> HIGH TERM ON, but to no avail.
>
> I could put the CD-R on channel A for now, but = when I get a
> SCSI disk to
> go there, I want to reserve channel A for it = and other-high
> speed stuff, and
> channel B for the slow things. Any idea what's = going on here?
>
> -lee
>
> --
> = +--------------------------------------------------------------------+
> |      Lee Cremeans -- = Manassas, VA, USA  (WakkyMouse on
> WTnet)      |  =
> = |         lcremeans@erols.com | = http://wakky.dyndns.org/~lee   &nbs= p;     |
>
>
> To Unsubscribe: send mail to = majordomo@FreeBSD.org
> with "unsubscribe freebsd-scsi" in = the body of the message
>

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