sun serial consoles via usb and linux

James Knott james.knott-bJEeYj9oJeDQT0dZR+AlfA at
Fri Dec 5 17:22:30 UTC 2008

David J Patrick wrote:
> James Knott wrote:
>> Neil Watson wrote:
>>> On Thu, Dec 04, 2008 at 04:56:59PM -0500, James Knott wrote:
>>>> A crossover "null modem" cable is generally required for computer -
>>>> computer communications.  They're standard, buy them at almost any 
>>>> place
>>>> that sells pre-made cables.
>> If it uses an RJ-45 connector (CAT5 refers to a cable quality standard,
>> not a connector type), it's often the "Cisco" connection.  Those can be
>> found, though not it your typical corner computer store.  You can get
>> adapters that connect such a cable to the DE-9 serial port connectors,
>> but you generally have to wire them yourself.
> we've got cable crimpers etc, at linuxcaffe, and if you get the pin 
> configuration online, we can make one up for you.
> djp

The adapters I mentioned are fairly cheap and easy to configure.  The 
crimpers are fine for the RJ-45 end, but not the adapter end.  Just 
determine the correct configuration and wire the adapter accordingly. 
Then use a standard ethernet cable.  Incidentally, if you goof in wiring 
the adapter, a cheap pin extractor tool is necessary to fix it.

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