Tim Meddick wrote:
> It's at all not certain that, having got the ["correct"] cable, there's
> *no* guarantee that it'll work anyway!!
>
> Just because you *can* get hold of the "right" cable that physically
> connects both the old "printer" port and the new USB port, doesn't mean
> they are going to automatically be compatible.
>
> "Then why do they make such cables?" - because they may have been
> designed to work with intermediate software - drivers or modified
> drivers created by either the original printer manufacturer or by the
> manufacturer of the cables themselves.
>
> If I were you I would look more closely into whether it is actually
> possible to do what you think can be achieved by joining your PC to your
> printer using a composite cable.
>
> ==
>
> Cheers, Tim Meddick, Peckham, London. :-)
Paul in Houston nailed it. When you use a USB to printer adapter cable
(an active device), the Microsoft protocol stack only has simple printer
driver capability. The cable doesn't support all of the traditional
parallel port operating modes. A USB to printer cable should work with
some printers, but because of the missing modes, not every function
on the end of the cable will work. Many older applications used to
"bit-bang" the parallel port directly, and that can't work via the
USB stack.
Using a PCI card to parallel port, would stand a better chance of
enabling all the traditional modes (SPP,ECP,EPP,whatever). If you have
a dongle for software authorization, you may need to buy the PCI card type,
so it will work. Or another example of things you can connect - I have
a JTAG programmer cable for the parallel port, and that would take
a "real" parallel port as well.
A USB to printer port cable is a poor substitute for this missing port
on PCs, due to the lack of functions. The USB stack getting in the
way, is part of that.
Paul
> "(PeteCresswell)" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> I thought I had it nailed when I ordered a "USB to Printer"
>> cable.
>>
>> But what arrived had a rather large ("Centronics"?) connector as
>> shown in http://tinyurl.com/4gxz923
>>
>> The old cables interface to the printer, OTOH, looks like this:
>> http://tinyurl.com/4mn57z5
>>
>> From what I can read, they are both male and the adapter I need
>> is "Centronics Female To Mini-Centronics Male".
>>
>> I *think* both of these are the one:
>> http://sewelldirect.com/centronicstomini.asp and
>> http://tinyurl.com/4ejqfqc, but before I blow another twenty
>> bucks, I'd like to hear somebody who knows say "Yes, that's the
>> one."
>>
>> --
>> PeteCresswell
>