Re: [linux-audio-dev] Linux Driver for Creamware Luna II

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Subject: Re: [linux-audio-dev] Linux Driver for Creamware Luna II
From: Erik de Castro Lopo (erikd-lad_AT_mega-nerd.com)
Date: Fri Nov 09 2001 - 09:45:42 EET

Just correcting spelling and logic.

It really blew my mind when Erik de Castro Lopo <erikd-lad_AT_mega-nerd.com> said:

> If someone hs access to a Logic Analyser with a PCI bus probe (I have seen
> one) then this becomes possible reverse engineering task.
>
> You run the card under Linux and watch the Logic Analyser trace. Then you
> start peeking an poking registers under Linux.

If someone has access to a Logic Analyser with a PCI bus probe (I have seen
one) then this becomes a possible reverse engineering task.

You run the card under Windows and watch the Logic Analyser trace. Then you
start peeking and poking registers under Linux.

Erik 

-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo  nospam_AT_mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
/*     efdtt.c     Author:  Charles M. Hannum <root_AT_ihack.net>             */
/*                                                                         */
/*     Usage is:  cat title-key scrambled.vob | efdtt >clear.vob           */

#define K(i)(x[i]^s[i+84])<<
unsigned char x[5],y,z,s[2048];main(n){for(read(0,x,5);read(0,s,n=2048);write(1
,s,n))if(s[y=s[13]%8+20]/16%4==1){int i=K(1)17^256+K(0)8,k=K(2)0,j=K(4)17^K(3)9
^k*2-k%8^8,a=0,b=0,c=26;for(s[y]-=16;--c;i/=2,j/=2)a=a*2^i&1,b=b*2^j&1;for(j=
127;++j<n;c=z+c>y)a^=a>>14,a=a>>8^(y=a^a*8^a<<6)<<9,b=b>>8^(z=b^b/8^b>>4^b>>12)
<<17,i=s[j],i="7Wo~'G_\216"[i&7]+2^"cr3sfw6v;*k+>/n."[i>>4]*2^i*257/8,s[j]=i^(i
&i*2&34)*6^z+c+~y;}}

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