Lpc2000

--- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@...> wrote:
> > > Um how do you lock out the HW in software? ...
> >ISP relies on the contents of boot sector being kept intact.
> > ...
> >It is possible to erase or corrupt the boot sector given
> >this section of on-chip flash is not protected and does
> > not have SDPor equivalent.
> 
> SDP??

Google comes to the rescue ... have a look at:

  http://www.sst.com/downloads/app_note/S72027.pdf

> Ah yes, the corrupted boot block.  You know in the 2 1/2
> years I've been following this list I've seen I think three
> reports of boot block corruption.
> An early report which was basically a friend of a stranger 
> report, your report which was the most detailed and one
> other that was later withdrawn.

I am not sure what kind of inferences one can draw from this.

I certainly have a quite a few who know me through this forum telling
me privately how much they regret going down the LPC path.

I do not think we will hear them say this in this forum until the
abuse one gets when one expresses a view that is not flattering to
Philips or LPC stops.

SDP or not, surely you have to agree that LPC chip hardware can be
locked out software.

My most favourite example of how not to design systems used to be a
certain storage oscilloscope in which the yoke drivers go up in smoke
each time you address the cursor to a point outside the screen.

I guess LPC is a modern day equivalent.

Jaya