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Emulate stop-a on a PS2 keyboard

I have an old Ultrasparc 10 platform that currently has Solaris 8 installed.  I do not have the passwords for the box as it was decommisioned long before coming on board.  The box will not currently boot to CDROM.  I need to be able to emulate the stop-a command on a PS2 keyboard and have yet to find anything that works.  I have tried 2 other sites recommendations performing ctrl+shft+Alt+Scroll Lock then pressing F1+A; second I tried right Ctrl+F1 with no success...any ideas?
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tlbrittain
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tlbrittain
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3 Solutions
 
omarfaridCommented:
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tlbrittainAuthor Commented:
Neither of those worked and neither did the link.  I found a Sun keyboard and when I went to swap out the keyboards as soon as I pulled out the PS2 keyboard it went to the OK prompt.  So pulling out the keyboard and plugging it in solved my problem.
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omarfaridCommented:
Hi,

It is well known that if you pull the keyboard the break signal is sent. The question was how to emulate stop-A.

Any way you got it done :)
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tlbrittainAuthor Commented:
I'm willing to give the points if someone can find a way that will work as I am only borrowing the Sun Keyboard, and may run into this problem in the future.
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omarfaridCommented:
Hi,

If you remove the keyboard / mouse / monitor then the m/c will be headless.

Now, with a null modem cable connected to the serial port of the m/c and to the serial port of a pc / laptop that runs hyper terminal, you can simulate it with ~# or by letting hyper terminal send break signal (when disconnect)  to the port or by removing the cable.

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tlbrittainAuthor Commented:
Is there no solution that will utilize the current hardware (Ultrasparc 10, PS2 converter, PS2 Keyboard)?
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omarfaridCommented:
Hi,

Try Ctrl-Alt-Break

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tlbrittainAuthor Commented:
Ctrl-Alt-Break does not work, atleast for my platform
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omarfaridCommented:
Hi,

I will keep you updated.

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tlbrittainAuthor Commented:
Updating points to 250 as the difficulty has exceeded my original expectations.
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omarfaridCommented:
Hi,

Very strange, but so far I came across many web pages that describe that cntrol+break should do the job.

http://episteme.arstechnica.com/eve/forums/a/tpc/f/96509133/m/5000941045

Here another link that talks about different way

http://www.motherboardpoint.com/t144513-sun-netra-x1cant-send-a-break.html
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Hanno P.S.IT Consultant and Infrastructure ArchitectCommented:
The usual "Ctrl - Break" instructs terminal emulation programs (like Hyperterm)
to send a break. Therefore, if you use Hyperterm to connect to a Sun system
via serial connection (ttya aka COM1) this is the way to get to the ok prompt.

Anyway, using a keyboard, connected to a Sun system makes the keyboard
the console, and not serial port A (ttya). In this case, you will have to send
the "break" directy from the keyboard.

Have you also, tried "right-control + F1", too.

I'll keep on searching ;-)
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Hanno P.S.IT Consultant and Infrastructure ArchitectCommented:
I have now checked with my Sun infos directly:
a) If you do NOT have a Sun keyboard it's unlikely you will be able to issue Stop-A
    Sun recommends unplugging and replugging the keyboard (Yes! That's their solution!)
b) As this will not work on newer systems with USB keyboards, they implemented another method:
   On most systems you will have to press the power button on the system's front panel three times in max. 1.5 seconds to get to the ok prompt.

Therefore, I'm really convinced that there is NO way to issue Stop-A with an non-Sun keyboard directly.
You may find some adapters for PS/2 keyboards to connect to Sun machines, that do emulate the Stop-A sequence -- but this is being perfomed in the adapter itself.
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Hanno P.S.IT Consultant and Infrastructure ArchitectCommented:
At some place you said, that you are using a "PS/2 converter" to connect the keyboard. Which type is it?
Depending on this converter, you may be able to find out which keyboard sequence will cause the adapter to send the Stop-A signal to your host.
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tlbrittainAuthor Commented:
There is no brand listed on the device, that would've been the first thing I searched for to see if the company had a specific key sequence.
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esacadminCommented:
I was having this same issue with a laptop.  Apparently if the laptop powers itself off to save battery life, that sends a break and when you power laptop back on, you will be at the ok prompt.  this more like a suspend feature and not a total power off.    it definitely works.

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