[Coco] [coco] USB to RS232 adapter

[Mathew Boytim]

Hi George,

I was going to mention that I had heard that FTDI did something to their driver so it wouldn't work with non-authentic chips.  I didn't know if it was actually true so I decided not to mention, but looking on ebay I found a used one where the seller said it uses a non-authentic chip and the FTDI driver doesn't work - you have to find a driver that works with the non-authentic chip.  So I'd be leery of the FTDI adapters from China.

In my own work I use the standard CDC virtual com class that uses Microsoft driver and it of course works well.  However there are some caveats if you want more than one virtual com in your device (composite USB device) and FTDI has chips with 2 or 4 virtual coms as well as other capabilities so I understand why they don't want to use the standard CDC class driver.  But if you would happen across one that does use the 'builtin driver to Windows' I would expect it to work well too.

Also, I haven't had any problems with the Prolific driver in Linux, just Windows.

Matt

--------------------------------------------
On Tue, 7/7/15, Mathew Boytim via Coco <coco at maltedmedia.com> wrote:

 Subject: Re: [Coco] [coco] USB to RS232 adapter
 To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
 Cc: "Mathew Boytim" <maboytim at yahoo.com>
 Date: Tuesday, July 7, 2015, 8:00 PM
 
 Hi George,
 
 You want one that uses the
 FTDI chip.  Avoid the ones that use the Prolific chip. 
 The Prolific driver seemed okay with Windows XP but with
 Windows 7 I get BSOD after not long and I just can't use
 anymore.  The FTDI driver has been no problem.  The super
 cheap ones from China tend to use the Prolific chip (PL203
 driver I think).
 
 I
 don't know a particular one to suggest that uses the
 FTDI chip but including 'ftdi' in an ebay search
 seems to find some.  The ones I use are logic level not
 rs232 level (don't have the logic to rs232 level
 translators) so you wouldn't want waht I use.
 
 Matt
 
 --------------------------------------------
 On Mon, 7/6/15, George Ramsower <georgera at gvtc.com>
 wrote:
 
  Subject: [Coco]
 [coco] USB to RS232 adapter
  To:
 "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
  Date: Monday, July 6, 2015, 1:20 AM
  
    I'm working on
 connecting my
  coco to this PC and I've
 read that some 
  of these adapters are
 better than others.
    Does anyone have
 some suggestion/experience with
  these
 things and what 
  works best?
  
  George R
 
 
  
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