Re: Howto null modem an Ultra 1 to a PC?
From: Greg Andrews (gerg_at_panix.com)
Date: 03/22/04
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Date: Mon, 22 Mar 2004 21:04:55 +0000 (UTC)
Simon Staiger <usenet2004-1@sstaiger.de> writes:
>Hello *,
>there is an Ultra 1 A12 sitting here on the desk, and I'd like to work
>with it remotely (putting away the monitor, keyboard and mouse).
>I'd like to do it "right" and link the serial port to another machine to
>be able to do full remote administration.
>
>Question:
>Which null modem cable is neccesary, and is it possible to build one
>with a PC mouse cable?
>
>I cut off the serial cable from an old serial PC mouse - pins 2, 3, 4, 7
>are connected, pin 5 is shortened to protective ground.
>
That's sufficient as long as you make the Ultra 1's open boot prom
ignore the CD pin on its "A" (ttya) port. At the "ok" prompt, type
"setenv ttya-ignore-cd true".
You don't say what size connector you already have on your mouse
cable, or what size connector you're going to attach to the cut-off
end.
-Greg
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