Sparc 20 stuck in diagnostics loop on serial console

Hi,

I've got a SPARCstation 20 (old I know) connected to my laptop via a serial null modem cable which works wonderfully. Only problem is that I enabled diag-switch? to true and reset the machine. It's now stuck in a loop Timeout waiting for ARP/RARP packet as it's set to network boot (it has no disk in it). I can't break to the monitor ok prompt either by sending breaks, ~# combos or anything else. I've used both Vandyke SecureCRT and Hyperterminal to no avail. It's just stuck.

Any ideas how to drop to the ok prompt over a serial console when it's stuck in an ARP/RARP loop?

[607 byte] By [Chris_Cswd] at [2007-11-26 7:35:49]

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# 1

Result! It appears the USB<->serial adaptor I'm using won't send breaks! I'll get another PC and use that.

Chris_Cswd at 2007-7-6 19:35:29 >

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# 2

Chris,

Try an alternative terminal program, as well.

I've used TeraTerm on every flavor of Windows from Win95a through WinXP-Pro{SP2}.

(... and it's been the ancient version 2.30, that I've used ! )

It has a native, mouse-able, keystroke sequence for the Break signal [Alt-B]

TeraTerm is freeware, not shareware.

From a Google search, the following links were found:

[url=http://hp.vector.co.jp/authors/VA002416/teraterm.html]Author's Home Page for TeraTerm 2.3[/url]

[url=http://www.ayera.com/teraterm/]TeraTerm 3.1.3 Home Page[/url]

[url=http://www.brandeis.edu/unet/documentation/teraterm.html]Trick, Tips, and instructions page at a US university, for its students[/url]

rukbat at 2007-7-6 19:35:29 >

# 3

Tried that. I hooked the port up to a digital storage scope and the thing isn't knocking out RS232 spec breaks. Typical chinese crap!Cheers!

Chris_Cswd at 2007-7-6 19:35:29 >

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Sparc 20 stuck in diagnostics loop on serial console

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