				   MrSporty

                              [ P r e s e n t s ]

              XBOX Bios / Xtender v1.1 Bios  *CRACKED* (c) Microsoft

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   Released   : June 1st, 2002                :  Game Type  : All :)
   Protection : Cmon .. its M$                :  # of Disks : 1 * 2.88mb
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            Intel 733 , Nvidia GFX , Non Standard DVD ROM , 10 Gig HD
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                         [ R e l e a s e   N o t e s ]

   Yep , its the cracked bios for a DIY X-BOX modchip .. before we get to the
   real nitty gritty tho    .. i'd like to tell u about how i came about this.

   Heard the rumours a month or so ago .. then Project X released all them 
   ISO's and so i decided it would be a good idea to purchase an Xbox :).

   A friend was kind enuff to send me an xtender 1.1 thru the post .. great i 
   thought .. pulled the TSOP , read it in .. damnit .. it looks encrypted.

   After further examination of the pcb layout i discovered that the full 8 
   bits of the databus were fed through the CPLD ,ahhhah ! .. a cheeky piece of
   bitswapping is afoot :). They also fed address lines A4,A5 and A6 into the
   CPLD .. which initially made me think that they could use 8 different bit
   swap sequence's for every 16 bytes.

   Fortunately .. it only looks like the guys got really lazy and used ONE 
   bitswap sequence for the whole ROM. 71534620 is the sequence in case anyone 
   cares.

   I got a friend to code me up a tiny app which would take a file, swap the 
   bits in a given sequence and output a decrpyted file.

   After running it thru the app and comparing it to the bios i originally 
   extracted from my own box, i came to the conclusion that i was now in 
   possession of the correct flash file.

   One trip to the local electronics store fer a spare TSOP and a bit of 
   soldering later .. my xbox was now booting dvdr's.


   It also turns out that the original BIOS in the XBOX is mirrored 4 times 
   throughout the ROM. So .. instead of using a 29F080 like the xtender does
   (overkill) , we could use an 020 part and just miss out the top address 
   lines (A18,A19). Now u know why the original wiring diagram for the 
   xtender included those 1 and 2 solder points .. and then the reson they
   posted that you could omit them .. "For future development" .. my arse.

   The statement that the xtender mod being flash upgradeable is a load of
   rubbish too .. the CPLD is .. sure .. cos the JTAG lines are brought out 
   onto the arse end of the pcb .. unfortunately the WE# line of the TSOP 
   flash rom is permanently tied to ground , meaning that the chip would need
   removing from the pcb for upgrading. You may as well do yer own bios 
   whilst you are at it.

   The bollocks cRaptor was spouting about xtender using 5 volts and how 
   enigmah was better cos it uses 3.3. BULLSHIT .. u think the original BIOS
   runs at 3.3 .. no .. it runs at 5 and because the MCPX has voltage tolerant
   input pins .. it dont give a rats ass if its running at 3.3 OR 5 volts ..
   yet again .. the marketing men trying to devise new ways to make sure you
   spend your hard earned cash on a new set of tyres for their sports cars. I 
   dont care who makes the money out of this and i can sure as shit tell u it
   aint gonna be me .. so u think IM gonna lie to ya ?

   Now for the one that blows all the other modchips out of the water.. they 
   are needlessly expensve, and u know why .. cos the only chip you need to 
   mod an xbox is the one in the box itself .. yep .. the 29F080 BIOS that 
   sits in the box  can be removed , reprogrammed and replaced and the box 
   will play everything an xtender 1.1 or enigmah chipped box will.

   Unfortunately , not everyone can handle de/soldering a 40 pin TSOP device
   the size of half a postage stamp. Hell .. even i have a hard enough time.
 
   So what im doing is giving away what should have been free from the 
   beginning .. the cracked BIOS image. Hopefully the guys out there can stop
   cRaptor from ripping off more of your hard earned cash and produce some
   home-brew CPLD code .. Old Crow stylee. ...



   Yours .. playing Halo on DVD-R.. MrSporty

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                                [ R i p p e d ]

   Xtender v1.1 .. hehehe

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                         [ I n s t a l l   N o t e s ]


   1) Unpack, read the FUCKRAPT.TXT
   2) Install flash image (MRSXBIOS.BIN) programmed ROM into yer xbox
   3) Play ...
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                             [ G r e e t i n g s ]

   The dude with the gun .. thanks for supplying the mod chip fer free. 
   The dude who is rhobust , and called Tim .. thanks for the bitswapper.



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