SS10 console settings

Mike Ross tmfdmike at
Sun Jun 14 16:22:24 CDT 2015

Sorry, didn't notice I'd replied to an email rather than the list.
>From last night:

OK I'll have to get to the bottom of this at some point, but it seems
it WAS the cable! Tried another one and, at 9600....

$$$$$   WARNING : No Keyboard Detected! $$$$$
MMU Context Table Reg Test
MMU Context Register Test
MMU TLB Bit Pattern Tests
D-Cache RAM Write/Read Test
D-Cache PTAG Write/Read Test
D-Cache STAG Write/Read Test
I-Cache RAM Write/Read Test
I-Cache PTAG Write/Read Test
I-Cache STAG Write/Read Test
EMC/SMC Control Regs  Tests

How in hell a *cable* can result in garbage beats me. I would expect
data, or no data - not garbage data...

On Mon, Jun 15, 2015 at 3:41 AM, tony duell <ard at> wrote:
>> I'm trying to resurrect a couple of Sparcstation 10 systems. Is there
>> anything 'funny' about the serial console settings on SS10 hardware? I
>> thought they always defaulted to 9600-n-8-1, but I get voluminous
>> gobbledygook at that, and at every other baud rate I've tried.
>> Both systems behave identically, so I can't assume SS10 settings are
>> wrong. And I *am* getting data, so I don't see how it can be the
>> cabling. Something strange about the terminal emulation mode required
>> maybe?
> Did they both come from the same place? It is possible (I guess) that
> parameters were changed to meet a local 'standard', and thus both
> machines are configured identically, just not the normal way.
> From the FAQ I've looked at, the serial port is a DB25 with the 'A'
> port on on the primary channel and the 'B' port on the back channel.
> If so, at least you've not got the classic problem of wiring up an
> RS422 port and using the wrong data pin (and thus getting inverted
> data, including the framing bits, which really confuses the receiver).
> I don't know if it's implemented here, but the FAQ suggests that pin 24
> will carry a baud rate clock. Have you tried a 'scope there? If so, what do
> you see, and what frequency?
> -tony

'No greater love hath a man than he lay down his life for his brother.
Not for millions, not for glory, not for fame.
For one person, in the dark, where no one will ever know or see.'

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