On 21 Mar 99, at 11:59, Jose E. Dominguez wrote:

> Doug Simmons wrote:
>
> > This is a common problem if you used your old motherboard's cable and
> > LPT connector.  Even though both connectors are the same, the pin
> > layouts on the motherboard connector are not the same between two
> > different motherboards.  In other words, the pins do not connect the
> > same between the motherboard and the LPT connector for two different MB
> > designs.  You must use the LPT connector and cable supplied with your
> > motherboard.
>
> I beg to differ here, the pin layout would be the same on newer
> cables and boards.

  The cables that connect serial (DB-9 or DB-25 MALE) to the
motherboard pins vary, and Doug's warning clearly applies to them.  The
connection between the DB-25 FEMALE parallel port connector and the
pins on the motherboard is subject to the same kinds of ambiguity, and
I expect motherboard designers have tended to set it up similarly to
the serial ports, so Doug's suggestion -- while I cannot swear that it
is really true -- makes sense.

  Note that the cables in question are short ribbon cables between a
header on the motherboard and a DB connector on the back of the case.
ATX systems have no such cable; their parallel port is attached to the
motherboard directly.


David G

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