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

From: Ethan Dicks <>
Date: Thu, 26 Nov 2009 19:17:25 -0500
Message-ID: <>
On 11/26/09, William Levak <> 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.


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Received on 2009-11-27 01:00:16

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