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 <hilp...@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. > >
