Date: Tue, 30 May 2000 13:54:35 -0500 From: "Delaney, Pam" <pdelaney@lsil.com> To: "'Lee Cremeans'" <lcremeans@erols.com>, freebsd-scsi@FreeBSD.ORG Subject: RE: Symbios dual ultra-wide woes Message-ID: <B2B3C90E45AED111B7B40001FA7E520A04FCF5E8@exw-kansas.ks.lsil.com>
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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
>
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<P><FONT SIZE=2>Lee -</FONT>
</P>
<P><FONT SIZE=2>The 22801 specifically prohibits using the configuration</FONT>
<BR><FONT SIZE=2>you show. You can use all narrow or all wide, but</FONT>
<BR><FONT SIZE=2>cannot mix wide and narrow (in general).</FONT>
</P>
<P><FONT SIZE=2>If the 22801 is at the end of the bus, termination</FONT>
<BR><FONT SIZE=2>at the board is enabled. If the 22801 is in the middle</FONT>
<BR><FONT SIZE=2>of the bus, the board will terminate the upper 9 lines if</FONT>
<BR><FONT SIZE=2>the cable is narrow, otherwise no termination is used.</FONT>
<BR><FONT SIZE=2>You have a wide cable and a narrow cable, the board</FONT>
<BR><FONT SIZE=2>hardware defaults to the wide bus case and provides no</FONT>
<BR><FONT SIZE=2>termination at all. Thus the upper 9 lines are floating.</FONT>
</P>
<P><FONT SIZE=2>Options:</FONT>
<BR><FONT SIZE=2>1) Use different channels (the board will autoterminate</FONT>
<BR><FONT SIZE=2> each channel).</FONT>
<BR><FONT SIZE=2>2) Get a cable that terminates the upper 8 bits. I checked</FONT>
<BR><FONT SIZE=2> the web and CS electronics does manufacture a cable (T68D</FONT>
<BR><FONT SIZE=2> I think) that is a 68->50 with termination at both ends.</FONT>
<BR><FONT SIZE=2> You will need something like:</FONT>
<BR><FONT SIZE=2> term ---68->50 cable---term</FONT>
<BR><FONT SIZE=2> Cables that terminate only one end will not work, because</FONT>
<BR><FONT SIZE=2> the signal being applied to the 22801 has to look like it</FONT>
<BR><FONT SIZE=2> is coming from a narrow bus.</FONT>
<BR><FONT SIZE=2> </FONT>
<BR> <FONT SIZE=2>-pamela</FONT>
</P>
<P><FONT SIZE=2>> -----Original Message-----</FONT>
<BR><FONT SIZE=2>> From: Lee Cremeans [<A HREF="mailto:lcremeans@erols.com">mailto:lcremeans@erols.com</A>]</FONT>
<BR><FONT SIZE=2>> Sent: Monday, May 29, 2000 7:23 PM</FONT>
<BR><FONT SIZE=2>> To: freebsd-scsi@FreeBSD.ORG</FONT>
<BR><FONT SIZE=2>> Subject: Symbios dual ultra-wide woes</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> I just got a Symbios SYM22801 (53C876-based) card handed to </FONT>
<BR><FONT SIZE=2>> me last week,</FONT>
<BR><FONT SIZE=2>> and I decided to put it in my machine to replace a </FONT>
<BR><FONT SIZE=2>> less-capable Adaptec</FONT>
<BR><FONT SIZE=2>> AVA-2904. I've run into an interesting problem. I'm not sure if it's</FONT>
<BR><FONT SIZE=2>> cabling-related or not, but the cables do seem to make a difference.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Here's how my setup works:</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> ID 5 ID 6</FONT>
<BR><FONT SIZE=2>> +-----------------+ +-----------------+</FONT>
<BR><FONT SIZE=2>> | UMAX scanner |----narrow SCSI---| Archive DDS-1 |</FONT>
<BR><FONT SIZE=2>> | (Astra 1220S) | | |</FONT>
<BR><FONT SIZE=2>> +-----------------+---terminator +-----------------+</FONT>
<BR><FONT SIZE=2>> |</FONT>
<BR><FONT SIZE=2>> |</FONT>
<BR><FONT SIZE=2>> CS Electronics 68-pin VHDCI<->50-pin Amphenol cable -->|</FONT>
<BR><FONT SIZE=2>> |</FONT>
<BR><FONT SIZE=2>> +----------------------+</FONT>
<BR><FONT SIZE=2>> | (ext 68-pin) |</FONT>
<BR><FONT SIZE=2>> | SYM22801 channel B | </FONT>
<BR><FONT SIZE=2>> | |</FONT>
<BR><FONT SIZE=2>> | (int 50-pin) |</FONT>
<BR><FONT SIZE=2>> +----------------------+ </FONT>
<BR><FONT SIZE=2>> |</FONT>
<BR><FONT SIZE=2>> | ID 4</FONT>
<BR><FONT SIZE=2>> +----------------------+</FONT>
<BR><FONT SIZE=2>> | TEAC CD-R55S |</FONT>
<BR><FONT SIZE=2>> | (terminated) |</FONT>
<BR><FONT SIZE=2>> +----------------------+</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Now, here's the interesting part. </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> - When I have *only* the external cable connected, the </FONT>
<BR><FONT SIZE=2>> channel works without</FONT>
<BR><FONT SIZE=2>> errors.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> - When I have *only* the CD-R55 connected, it also works fine. </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> - If I have the external stuff on channel A, and the internal stuff on</FONT>
<BR><FONT SIZE=2>> channel B (or vice versa), that works.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> - However, when I have both connected to channel B, I get this mess: </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> sym1:4: ERROR (0:48) (2-21-0) (f/35) @ (scriptb 2e8:11000020).</FONT>
<BR><FONT SIZE=2>> sym1: script cmd = 88080000</FONT>
<BR><FONT SIZE=2>> sym1: regdump: da 10 80 35 47 0f 04 0a 01 02 00 21 80 01 09 </FONT>
<BR><FONT SIZE=2>> 00 00 52 dc 01</FONT>
<BR><FONT SIZE=2>> 08 ff ff ff.</FONT>
<BR><FONT SIZE=2>> (noperiph:sym1:0:-1:-1): SCSI BUS reset detected.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> over and over again, until I reboot the machine. I've not yet </FONT>
<BR><FONT SIZE=2>> tried the old</FONT>
<BR><FONT SIZE=2>> ncr driver on it. I've tried setting the channel switches to </FONT>
<BR><FONT SIZE=2>> INT50 ON and</FONT>
<BR><FONT SIZE=2>> HIGH TERM ON, but to no avail.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> I could put the CD-R on channel A for now, but when I get a </FONT>
<BR><FONT SIZE=2>> SCSI disk to</FONT>
<BR><FONT SIZE=2>> go there, I want to reserve channel A for it and other-high </FONT>
<BR><FONT SIZE=2>> speed stuff, and</FONT>
<BR><FONT SIZE=2>> channel B for the slow things. Any idea what's going on here? </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> -lee</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> --</FONT>
<BR><FONT SIZE=2>> +--------------------------------------------------------------------+</FONT>
<BR><FONT SIZE=2>> | Lee Cremeans -- Manassas, VA, USA (WakkyMouse on </FONT>
<BR><FONT SIZE=2>> WTnet) | </FONT>
<BR><FONT SIZE=2>> | lcremeans@erols.com | <A HREF="http://wakky.dyndns.org/~lee" TARGET="_blank">http://wakky.dyndns.org/~lee</A> |</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> To Unsubscribe: send mail to majordomo@FreeBSD.org</FONT>
<BR><FONT SIZE=2>> with "unsubscribe freebsd-scsi" in the body of the message</FONT>
<BR><FONT SIZE=2>> </FONT>
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