Re: PET 2001 Fix....WAS: Will pay good money for NON working PET 2001 motherboard.

From: Ethan Dicks <ethan.dicks_at_gmail.com>
Date: Thu, 26 Nov 2009 19:17:25 -0500
Message-ID: <f4eb766f0911261617s2c5211c0u38f312b3bd18de3@mail.gmail.com>
On 11/26/09, William Levak <wlevak@sdf.lonestar.org> wrote:
>>> On the first version of PET Basic you cannot PEEK the Basic ROMs.  You
>>> always get 0.  Supposedly this was a restriction imposed by Microsoft.
>>
>> haha is that true really? sounds like a very stupid and useless attempt to
>> protect them =)
>
> Yes, it's true, and yes, it's stupid and useless.  It only takes a 6 byte
> routine poked into memory to get around it.

Ultimately useless, yes; but for 90% or more of the initial
purchasers, a sufficient roadblock.

If the CPU can read a byte, a determined engineer can read that byte.
Simple protections merely keep out the casually curious.

-ethan

       Message was sent through the cbm-hackers mailing list
Received on 2009-11-27 01:00:16

Archive generated by hypermail 2.2.0.