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in order to verify that correctness of the reconstructed opcode list above, we need to find a method of testing the 'x-code' and get back the result. new 'x-code' can be constructed by modifying the flash contents but how do we get back the results? since the flash basically sits on a ISA-like bus (or X-bus - check out Intel documentation), if we can find the RD & WR signal then 'x-code' can be used to write back data onto the X-bus. a few snoops of some of the test point on the back of the motherboard near the flash reveals some interesting information. the OE_ & WE_ signals from the flash is not connected to the mcpx but interestingly provisions are being made from them to be connected via 2 jumper points (2 sets of resistor pads). connects up the jumpers & hooking up with RD & WR signal together with address & data buses of the flash to a logic analyzer will enable us to look at all the read & write transactions on the X-bus. if you have no means to capture & look at these signals, this document will probably be of no use to you.
if you have everything wired up correctly, modifying the 'x-code' to perform a write to the flash mapped region, i.e. <0x03> <0xFFFFFF00>,<0xAAAAAAAA>, will show up some nice write cycles on your logic analyzer. we now have a way to pass data for execution by the 'x-code' interpreter & also a primitive way to read back the results. next, we will look at how we can make use of these powerful 'x-code' instructions to explore the xbox!
nice - Duh (Anon. User) (posted@ 11:38:24PM 6/2/2002)
... now we need a signed executable on an ISO that can reflash (yes I know you need to solder that resistor .. ) Xboxes.
aunque, quien sabe, quizá ya haya una BIOS pal/spanish rulando por internet
We're also developing a 12 wire version Enigmah which should be available very soon. Also looking at a more stable auto switcher when patching the ROM.
En el caso de que pudieramos cargar la nueva BIOS mediante software, MS puede hacerlo al igual para destruir la BIOS hackeada y meterle una nueva BIOS, y deberiamos estar parcheando cada juego.
En el caso de que pudieramos cargar la nueva BIOS mediante software, MS puede hacerlo al igual para destruir la BIOS hackeada y meterle una nueva BIOS, y deberiamos estar parcheando cada juego.
Soy mas favorable a tener un chip instalado...
A mi me pasa lo contrario... será porque soy del mundo del pc y los monopolios y más si me quieren imponer el de un chip. Particularmente soy más partidario del open-source... ya que a más ojos viendo el codigo menos bugs y más rapido desarrollo y en un caso como el de los chips, si todo lo que se sabe de la XBOX por grupos que desean mantener el control sobre algo (ya sea release, extracción de DVDs, modificación de BIOS o firmwares) hace ya tiempo que tendriamos metodos Buenos y baratos de usar la consola como algo más que un soporte de juegos.
Yo creo, y pienso que no soy el unico, que todo lo que está saliendo a la luz ahora como el estudio de Bunnie, el bug encontrado por Visor, el metodo de extraer la BIOS publicado por Mr. Sporty y Muchas de las cosas que publican y descubren a diario gente que dona sus conocimientos sin animo de lucro, como el proyecto Xbox-linux o sin ir más lejos los exfuerzos de makinator y seagal, todo es sabido hace mucho tiempo por grupos que quieren (o querian porque se les está jodiendo el chollo) tener el control y aprovecharse del trabajo de otros (en este caso MS), asi que a mi parecer si puedo saber lo que meto en mi consola mejor que mejor... que no me vendan la moto.
A ver que pasa este més, pero me intuyo que no hará falta mucho tiempo para que "modear" la XBOX, más que barato sea libre.
Quizá me equivoque, pero que la consola se pueda utilizar para más cosas que jugar y poner juegos "piratas" gana muchisima gente... quizá más que el pirateo de juegos( no lo creo).
Segun lo que he leido, vamos a poder crear nuestro propio mod e incluso reprogramar la bios de la xobx.
1) Very few people can deal with 40 + pin TSOP devices, this is extremely delicate soldering work, and the equipment to program such devices, along with the necessary adaptors becomes expensive. Therefore a modchip device with minimal wiring would still be a desired factor for Joe Public as an end purchasing customer.
2) The price of X-Box modification devices are currently high, this will change dramatically as its not a viable solution now that workshops can offer to re-program TSOPS / Upgrade Consoles in workshops etc.
Therefore the Messiah team still intend to release the Messiah-X, a much cheaper modchip device solution than the current Enigmah and Xtender versions, but still providing all the features of those modifications with only 12 wires to solder.
The pricing of this modchip will be very economical, this is justified now due to the current X-Box upgrade environment that has suddenly expanded dramatically due to Mr. Sporty's release.
Here are some specifications of Messiah-X which will be released in the next week:
Features:
A) Only 12 Easy To Solder Wires
B) All Backups of XBOX games will boot
C) All Import Original XBOX games will boot
D) Boots games from ALL release groups - not just some of them
E) No-Patch Hack - boots all games without any patches
F) Compatible with CDR/CDRWDVDR/DVDRW (However DVD should be used for best results)
G) Universal design that works on all models from all regions (USA/JAP/PAL)
H) Automatic detection and switching of Kernels for no-hassle support of all bios versions and regions
I) All wiring points are VERY easy - no IC's to solder to - all pre-soldered pads.
J) Modified XBE's and custom code can boot, including Enigmah releases (even if protected for Enigmah chip only)
K) Macrovision Disabled (Copy your DVD films to VCR - including region 1 to PAL VCR)
L) DVD Reset Enabled (Use multiple DVD Playback Kits for Multiregion Enhancement)