Must just be my week for strange behaviour

[Sameer Verma]

On Wed, Feb 15, 2012 at 10:39 AM, Kevin Gordon <kgordon420 at gmail.com> wrote:
>
> On Wed, Feb 15, 2012 at 1:34 PM, Paul Fox <pgf at laptop.org> wrote:
>>
>> kevin wrote:
>>  > I'm fixing up about 5 XO-1s I bought from eBay, all with what appear to
>> be
>>  > RTC issues.
>>  >
>>  > 4 all worked nicely, page fault error from the serial adapter console,
>>  > entered the select/decimal/set-time, they rebooted and re-flashed very
>> well.
>>  >
>>  > Alas, number 5, when I crank up the power, all that appears on the
>> serial
>>  > console is a '+' sign, no pretty Forth message, no Page Fault error,
>> just
>>  > that lonely arithmetic symbol.
>>  >
>>  > Went back to a couple of the others and verified that serial adapter
>> and
>>  > console still worked
>>  >
>>  > Is there a possiblity that this one beast might have a different baud
>> rate
>>  > or parity?  I didn't really want to try the o, let's say, 32768
>> different
>>
>> no, it's not a baud rate or parity issue.  if you look closely at the
>> serial output from one of your working machines, you'll see that the
>> very first character produced by OFW is '+'.  <cr><nl> or <nl><cr> is
>> next, then the Forthmacs strings.  i believe mitch uses every one of
>> those characters as a progress indication.  dying as early as your
>> machine does is probably not a good sign.
>
>
> Darn.
>
> And I left my JTAG in my other pants.
>
> Kidding.
>
> I'll put it into the 'Investigate Later' bin, as it looks like it might take
> a fair amount of time/effort with an appreciable chance of ultimate
> failure.  Back to the 1.75 I go .....
>
> Thanks everyone for the quick replies.
>
> KG
>
>
>
>>
>>
>> paul
>>
>> =---------------------
>>  paul fox, pgf at laptop.org
>
>
>
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>

I now have one that came in for repair, and is showing the same
behavior. Shows a + sign at power up on minicom.

Sameer
-- 
Sameer Verma, Ph.D.
Professor, Information Systems
San Francisco State University
http://verma.sfsu.edu/
http://commons.sfsu.edu/
http://olpcsf.org/