> I have an Adaptec AIC-7850 SCSI adapter, to which I want to attatch an
> internal Plextor CD-R drive and an external Nikon scanner. My problem
> is that the scanner is not recognized if the CD-R drive is connected.
> I think that connecting the CD-R to the internal SCSI bus is somehow
> defeating the external bus.
>
> Is this supposed to happen? Is this because this is a single bus
> card? Can anyone recommend a PCI SCSI adapter that will support an
> external narrow bus and an internal narrow bus at the same time?
I'm not sure about the particular card you have, but IF IT HAS A BIOS:
Press <CRTL-A> at startup for settings
Somewhere in there should be a setting for auto-terminating the card if it
is at the end of a SCSI chain. (SCSI Chains need to be terminated at both
ends, most ppl don't realise the card becomes the termination point if you
only have internal or external devices)
I think you need to turn this off if you want the chain to externd to the
external connection.
If it does not have a bios, there may be terminators on the card itself. You
need to remove these.
Hope This Helps.
--
Edward Dekkers (Director)
Triple D Computer Services Pty. Ltd.
822 Rowley Road
Oakford W.A. 6121
+61 8 9397-1040
ABN: 33 635 238 024
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