Jason Costomiris on Fri, 12 May 2000 07:44:50 -0400 (EDT)


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Re: [PLUG] Sparc 1+ cable


On Fri, May 12, 2000 at 12:15:40AM -0400, Michael C. Toren wrote:
: > The IPC's serial cable looks a little odd, but the 1+ looks like it
: > takes a regular 25-pin D-sub RS-232.  Can anyone confirm this?
: 
: Yup, you're right.  The Sparc's in pizza-box style cases take a regular
: DB25 serial cable, while the shoe-box style cases require the PS/2-looking
: serial adapter.

To one-up the weirdness, in the pizza-box cases, there's only one serial
port on the back of the unit, but the machine supports two serial ports.

There's a special cable from Sun that takes the DB25 on the back of the 
pizza-box cases and splits it out into two DB25's that are pinned in the
usual manner.  How can they do that?  Remember, RS232 only uses 9 pins.
The port is pinned correctly for a single device, and uses some of the 
spare pins for the second port...

-- 
Jason Costomiris <><           |  Technologist, geek, human.
jcostom {at} jasons {dot} org  |  http://www.jasons.org/ 

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