Re: Copy Protection of PET cassettes - Flash Attack.

From: Daniel Kahlin <>
Date: Tue, 10 Aug 2010 09:51:44 +0200 (CEST)
Message-ID: <>
I'm going to guess that "FLASH ATTACK" is the original game file and
that "FLASH ATTACK 4" is patched to run on the 40xx series, no?

Apparently you can run it that way by answering no on the

Anyway a quick analysis shows that the game loads $027A-$2000.
The first chunk at $027A looks like a cassette header indicating a file
"FLASH ATTACK" $03FD-$2000

I found a good page about the game with an interview of on of the original 
authors that stated the game was initially released on tape.

My guess is that the game will work if you load it from disk, then save 
the range $03FD-$2000 to tape with the exact name "FLASH ATTACK" using the 

Quite interestingly there's a virtual machine at $1B7E which is the actual 
game code.  On the interview page that machine is said to be a custom 
forth-like language.


On Mon, 9 Aug 2010, Bill Degnan wrote:

> You can't run the program w/o the cable btwn two PETs.  Search flash attack
> on the web and my website for more info
> Bill Degnan

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Received on 2010-08-10 08:00:08

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