Kim 1

[drlegendre .]

Brent,

"The 355 top opened: under the locked cover, switches can be set to
introduce faults into the circuit."

Thanks.

On Wed, Feb 17, 2016 at 10:25 PM, Brent Hilpert <hilpert at cs.ubc.ca> wrote:

> On 2016-Feb-17, at 5:23 PM, drlegendre . wrote:
> > "On 2/17/2016 3:32 PM, drlegendre . wrote:
> >
> >> On the LabVolt SBC, there's a little keylock on the lower, left of the
> >> board. What's the purpose of the lock? Are there costly (RAM?) chips
> inside
> >> there, or...?
> >>
> > DIP switches, since it's a trainer, it appears they are used to create
> > "faults" to troubleshoot."
> >
> > Just to be clear - you +know+ for a fact there are DIP switches inside,
> but
> > you only +surmise+ they are for creating fault conditions?
>
>
> Well, you might consider this near example:
>         http://www.dvq.com/oldcomp/micros.htm
>
> Look down the page for the LabVolt 355.
>
> I forget who "dvq" is, I think they were or are on the list.
>
>
> > As mentioned, I was thinking either pricey components or possibly some
> sort
> > of anti-theft device.. opening the door exposes a feature that allows the
> > unit to be tethered to a bench.
> >
> > This is before the days of commodity EEPROM, so it's not like they need
> to
> > write-protect firmware, resident software, etc.
>
>