[Coco] DriveWire problem

[bryan at clingman.org]

Sorry, that is for Windows, not linux.

On February 16, 2016 3:10:49 PM PST, bryan at clingman.org wrote:
>Hi,
>
>It could be because the ftdi drivers in certain cases inject some
>warning text into the serial data stream when they detect a counterfeit
>device.
>
>http://www.eevblog.com/forum/microcontrollers/ftdi-gate-2-0/
>
>--bryan
>
>
>On February 16, 2016 3:02:30 PM PST, Steven Hirsch <snhirsch at gmail.com>
>wrote:
>>On Sun, 14 Feb 2016, Aaron Wolfe wrote:
>>
>>> On Sun, Feb 14, 2016 at 5:07 PM, Steven Hirsch <snhirsch at gmail.com>
>>wrote:
>>>
>>>>
>>>> The DW GUI is showing pairs of messages:
>>>>
>>>> Sun Feb 14 2016 16:53:47.362  WARN   DWProtocolHandler  
>dwproto-0-9
>>>>    Timed out reading from CoCo in OP_WRITE
>>>>
>>>> Sun Feb 14 2016 16:53:47.367  WARN   DWProtocolHandler  
>dwproto-0-9
>>>>     OP_WRITE took 286ms.
>>>>
>>
>>> This means the server is waiting for data from the CoCo and not
>>getting it
>>> within the expected time period.  Some operations like writing
>>involve a
>>> few back and forth exchanges between server and coco.  If either
>side
>>takes
>>> longer than ~250ms iirc then the other side is supposed to assume
>>failure,
>>> which is what the server is warning about.  It really shouldn't
>>happen.
>>> So... first thing I'd check is the serial cable itself for anything
>>loose,
>>> etc.  Some people have had this kind of result when the cable was
>>just too
>>> long.  OP_WRITE is one of few times the coco actually sends a lot of
>>bytes
>>> in a row over the wire so it can reveal a more general problem.
>>
>>Give the man a prize!  I bought a new name-brand FTDI cable, swapped
>>out 
>>my $5 no-name flea market adapter and life is now good.  I copy data
>to
>>
>>the DW volume to my heart's content.  The original was probably a 
>>counterfeit FTDI (as so many cheapie adapters tend to be) and likely 
>>succumbed to electro-migration.
>>
>>Thanks, Aaaron.
>>
>>
>>
>>-- 
>>
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>
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>
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