[sane-devel] Parallel Port as SCSI

[Peter Fales]

Apple came out with a SCSI bus using DB-25 connectors.  (I believe
they were the first to do this, and though it probably violates the 
SCSI standards, they carry enough market weight that it has now become
a de-facto standard and you can now buy 25-pin SCSI cables and connectors)

There are also various flavors of parallel port to SCSI converters
around.  But, since your equipment actually says "SCSI" on the port,
that's probably what it really is.   You  would  need to refer to the
documentation to know for sure.

My Microtek scanner has both 25-pin and 50-pin SCSI connectors on it.  But
both are true SCSI - I believe the 25-pin connector is there to cater
to Apple users.

-- 

Peter Fales
Peter "at" fales-lorenz.net

On Fri, May 26, 2006 at 03:31:19PM +0200, Get A. Long wrote:
> Hi again,
> 
> Looking at the pictures at howstuffworks.com it is seems I do have a 
> parallel cable, and two parallel ports (both DB-25, 'females') in the 
> scanner. Funnily, on my scanner both these ports 
> (http://computer.howstuffworks.com/parallel-port1.htm) are labelled "SCSI" 
> with large (8 mm) letters.
> 
> The SCSI cable is illustrated at 
> http://computer.howstuffworks.com/scsi1.htm but does not look like anything 
> I have and would not fit anywhere in the scanner, or the computer. So, I 
> understand your surprise! :)
> 
> >From http://computer.howstuffworks.com/parallel-port.htm :
> 
> >Parallel ports can be used to connect a host of popular computer 
> >peripherals:
> >
> >   * Printers
> >   * Scanners
> >  * CD burners
> >   * External hard drives
> >   * Iomega Zip removable drives
> >   * Network adapters
> >   * Tape backup drives
> 
> Apparently, parallel ports are used for scanners, and the UMAX Astra 1200S 
> has it, despite labelled as SCSI. I guess then there is some software 
> emulation or something like that somewhere, or did I misunderstand it?
> 
> Thanks for any help on how to proceed before I buy that card!
> 
> David
> 
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