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PCBUILD - PC Hardware discussion List <[log in to unmask]>
Date:
Mon, 18 May 1998 10:33:24 +0000
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        Hi.

>
> On 14 May 98 at 7:02, Russ Poffenberger wrote:
>
> > Putting a narrow device on a wide bus does NOT slow down the other
> > peripherals. This is a common misconception.
> >
> > Thje SCSI controller will negotiate the transfer rate individually
> > with each device.
>
>   Every nice simple rule has its exception, it seems.  If you connect
> a narrow device to a wide bus between the controller and a wide
> device, with a wide-narrow adapter that terminates the wide aprt of
> the bus,
 "then you only have a narrow data path available" ???
> from the
> controller to the wide device.  [This is not the scenario that Russ
> was responding to, and its fix involves rearranging devices rather
> than installing a second host adapter.]
>

        Apart from being incorrect, I don't see the point, since a
line in the wide part will:
-first, see its termination at the wide-narrow adapter;
-last, will reach the wide device (which should be unterminated on
the wide lines).

        So, other than violating the terminator location rule, the
wide device would receive all lines, and perhaps would work normally.
        Did I misunderstand something?

************************************
Javier Vizcaino. Ability Electronics. [log in to unmask]
  Starting point:        (-1)^(-1) = -1
  Applying logarithms: (-1)*ln(-1) = ln(-1)
  Since ln(-1) <> 0, dividing:  -1 = 1     (ln(-1) is complex, but exists)

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