[ale] [Slightly OT] Prolific
Michael H. Warfield
mhw at WittsEnd.com
Wed Nov 7 15:21:44 EST 2012
On Wed, 2012-11-07 at 10:33 -0800, Alex Carver wrote:
> I've had good luck with the Keyspan adapters. I have a one-port and a
> four-port unit and both work fine. Haven't popped them open to examine
> the chipset. However, I haven't had a problem with renumbering ports
> when plugging into different USB sockets using them.
I have an 8 port model of one brand (I don't remember what) that works
like a charm under Linux. I did do some udev rules for persistent
mappings but only be cause it's also hooked up through a 4 port USB
sharing device and sometimes it isn't hooked up and other devices get
the ports out of order.
Regards,
Mike
> On 11/7/2012 09:23, Michael Trausch wrote:
> > Without hw flow control, low bit rate should still be possible with
> > xon/xoff flow control...
> > On Nov 7, 2012 11:50 AM, "Ron Frazier (ALE)" <
> > atllinuxenthinfo at techstarship.com> wrote:
> >
> >> PS. I don't think all the usb / serial adapters support all the flow
> >> control stuff. The packaging on this one says they support every signal
> >> that's on the db9 connector.
> >>
> >> Ron
> >>
> >>
> >> "Ron Frazier (ALE)" <atllinuxenthinfo at techstarship.com> wrote:
> >>
> >>> Here's a link to the product I bought from Amazon, although that
> >>> doesn't GUARANTEE that it's not counterfeit. Trendnet has a pretty
> >>> good reputation though.
> >>>
> >>>
> >> http://www.amazon.com/TRENDnet-RS-232-Serial-Converter-TU-S9/dp/B0007T27H8/ref=sr_1_1?ie=UTF8&qid=1352305792&sr=8-1&keywords=B0007T27H8
> >>>
> >>> If the link doesn't work, search on Amazon for product # B0007T27H8.
> >>>
> >>> Sincerely,
> >>>
> >>> Ron
> >>>
> >>>
> >>> Matt Hessel <matt.hessel at gmail.com> wrote:
> >>>
> >>>> The prolific chip is the most commonly counterfeited hardware too. I
> >>>> had
> >>>> one that worked in Windows, but nothing else. found out that the
> >>>> adapter
> >>>> was a fake. Prolific had a site up talking about the counterfeited
> >>>> stuff.
> >>>> On Nov 4, 2012 7:12 PM, "mike at trausch.us" <mike at trausch.us> wrote:
> >>>>
> >>>>> Just out of curiosity, has anyone here actually seen a WORKING chip
> >>>> from
> >>>>> Prolific?
> >>>>>
> >>>>> I'm finding myself wondering how the hell they're still in business.
> >>>> Every
> >>>>> USB cable I have purchased that has a PL* chip in it simply doesn't
> >>>> work.
> >>>>> Doesn't matter if we're talking about serial or parallel
> >>> interfaces,
> >>>> they
> >>>>> just never ever work.
> >>>>>
> >>>>> And of course, you can never tell what chipset is in the stupid
> >>>> things
> >>>>> until you've bought them and hooked them up and then you have that
> >>>> "D'oh!"
> >>>>> moment.
> >>>>>
> >>>>> Seems that Fry's only carries such cables, so I guess I won't be
> >>>> buying
> >>>>> from there anymore. Linux kernel devs strongly suggest avoiding
> >>>> them.
> >>>>>
> >>>>> The problem this time? It will receive data from a modem, but not
> >>>>> transmit to the modem. So I can see:
> >>>>>
> >>>>> RING
> >>>>>
> >>>>> RING
> >>>>>
> >>>>> But if I try to send "ATA" nothing happens, no echo, no going
> >>>> off-hook, no
> >>>>> screeching, no nothing.
> >>>>>
> >>>>> Wonderful, yes?
> >>>>>
> >>>>> SO anyway, just curious: has anyone heard of a chip from this
> >>>> manufacturer
> >>>>> actually performing as intended, or do they just hate me?
> >>>>>
> >>>>> --- Mike
> >>>>>
> >>>>> --
> >>>>> A man who reasons deliberately, manages it better after studying
> >>>> Logic
> >>>>> than he could before, if he is sincere about it and has common
> >>> sense.
> >>>>> --- Carveth Read, “Logic”
> >>>>> ______________________________**_________________
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> >>>>
> >>>>
> >>>> ------------------------------------------------------------------------
> >>>>
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> >>> --
> >>>
> >>> Sent from my Android Acer A500 tablet with bluetooth keyboard and K-9
> >>> Mail.
> >>> Please excuse my potential brevity.
> >>>
> >>> (To whom it may concern. My email address has changed. Replying to
> >>> former
> >>> messages prior to 03/31/12 with my personal address will go to the
> >>> wrong
> >>> address. Please send all personal correspondence to the new address.)
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> >>> (PS - If you email me and don't get a quick response, you might want to
> >>> call on the phone. I get about 300 emails per day from alternate
> >>> energy
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> >>> quickly.)
> >>>
> >>> Ron Frazier
> >>> 770-205-9422 (O) Leave a message.
> >>> linuxdude AT techstarship.com
> >>>
> >>>
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> >>
> >>
> >> --
> >>
> >> Sent from my Android Acer A500 tablet with bluetooth keyboard and K-9 Mail.
> >> Please excuse my potential brevity.
> >>
> >> (To whom it may concern. My email address has changed. Replying to former
> >> messages prior to 03/31/12 with my personal address will go to the wrong
> >> address. Please send all personal correspondence to the new address.)
> >>
> >> (PS - If you email me and don't get a quick response, you might want to
> >> call on the phone. I get about 300 emails per day from alternate energy
> >> mailing lists and such. I don't always see new email messages very
> >> quickly.)
> >>
> >> Ron Frazier
> >> 770-205-9422 (O) Leave a message.
> >> linuxdude AT techstarship.com
> >>
> >>
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> >>
> >
> >
> >
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>
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--
Michael H. Warfield (AI4NB) | (770) 985-6132 | mhw at WittsEnd.com
/\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/
NIC whois: MHW9 | An optimist believes we live in the best of all
PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it!
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