Re: ISP programming and code prrotection

larwe_at_larwe.com
Date: 03/11/05 

Date: 11 Mar 2005 00:04:39 -0800

> So I have a question that whether the above thinking is right ro not.
> Or if it is right, is it possible to make ISP possible and
> simultaneously protect our firmware code from being read during
> verification?
>

Depends on the micro. Often, ISP is locked out once you enable the
protection bits. Sometimes the verification process works by sending
the new data to the micro twice; first time to burn, second time to
verify. Sometimes you simply can't verify after setting the protection
bits, in which case the procedure is to erase the device, program code
memory, verify code memory, then program security bits.

By definition, anyone who has the power to ISP-burn your micros has
enough information to copy them.

Relevant Pages

  • Re: ISP programming and code prrotection
    ... > Depends on the micro. ... Sometimes you simply can't verify after setting the protection ... Ulf at atmel dot com ...
    (comp.arch.embedded)
  • Re: A question for the group
    ... They don't protect you from trojans. ... I want my ISP to keep its hands off my e-mails. ... Any spam checking in particular must be fully controlled by the user - presumably there are some people out there who think special offers for little blue pills are important legitimate emails. ... ISPs should provide a proper firewall, individually controllable by each customer, providing the same sort of protection as hardware firewall/routers, or they should include a cheap device in their startup package. ...
    (sci.electronics.design)
  • Re: viruses, spyware, hijackers, I am losing my mind!
    ... My ISP provides my popup blocker, virus protection, ... firewall and parental control software. ... To double check my ISP ... > the best job in not only removing spyware, viruses, virus creation tools, ...
    (rec.crafts.textiles.quilting)
  • Re: antivirus
    ... Les Connor [SBS Community Member] ... > the fact that my isp had not locked submission for my domain to only the ... I will be looking in to some kind of protection. ... >>>>> protection on the Exchange Server. ...
    (microsoft.public.windows.server.sbs)
  • Re: Cannot connect to RWW from home PC
    ... Verify that the simple box that came from telefonia will allow ports 25, ... If the ip address is assigned by the ISP with DHCP, ... Choose what attachments to disallow - I disallow all of the them ...
    (microsoft.public.windows.server.sbs)