Topic: Chameleon (Read 1334 times)

hadrian · « **Reply #105 on:** June 09, 2003, 02:10:00 PM »

PROGRAMMER IS AVAILABLE, YAY!!!!!!!!!!!!

Check out the other thread for a pic.

explicitlyrics100 · « **Reply #106 on:** June 10, 2003, 03:55:00 PM »

yup, programmer is availible and i just checked 8 more chips with it and all were working! thats 12/12 fully functional now! almost unreal lol anyway gd luck to all you people who appear to have a dead one

explicitlyrics100 · « **Reply #107 on:** June 10, 2003, 05:23:00 PM »

do not underestimate the importance of the lpc header pin. they may look like an easier install but the chip does need a good connection for the chip to get enough juice to work correctly. check this before you get more stressed about not being able to do d0. also what happens when your d0 wire is connected to ground (case)?

Neo2003 · « **Reply #108 on:** June 10, 2003, 07:32:00 PM »

solder_man: Here's a quick way to test; Remover you cham. from the pin header, flip it arround and fit the quick solder to the LPC pin header (this should fit perfectly), ground your D0, your cham should blink or light up! and if you have any thing in the BIOS it will boot up ... if it not working than take a multimeter and check all the pin header in the LPC connector ... all should have power from 3.3v to 5v except pin#2 which is the GROUNG

dzv · « **Reply #109 on:** June 11, 2003, 06:53:00 AM »

I'm not 100% certain about the exact details of D0, but I do know that it controls whether to boot from the onboard TSOP BIOS, or from the LPC. If the D0 pin is high, the Xbox boots from TSOP. If the D0 is low (achieved by grounding any point along the D0 line), then the Xbox boots from LPC.

explicitlyrics100 · « **Reply #110 on:** June 11, 2003, 11:10:00 AM »

yeh, its just like an electronic switch used by M$ presumably when they take the xbox's for checking/repair.
just like by holding e and p for different time periods it can decide which bank to boot from

dink · « **Reply #111 on:** June 11, 2003, 11:50:00 AM »

QUOTE

yeh, its just like an electronic switch used by M$ presumably when they take the xbox's for checking/repair.

I agree.

That brings up another question. How do the M$ engineering/repair folks, enable the LPC for debugging/testing?
I find it hard to believe, that they are grounding D0, the same way we are. Working in electronics repair field for years, I have always used hidden hardware/software toggles to go into special diagnostic mode.

There must be somekind of hidden way, that they use to enable the LPC interface. I think we are taking the brut force approach, by shorting D0 to ground. Without schematics or logical drawings, I think its going to be hard to find. But I am sure someone will stumble on it!

explicitlyrics100 · « **Reply #112 on:** June 11, 2003, 12:10:00 PM »

i believe what they have is a clip, u push it into the hole while holding a switch, once inside the hole, you release it and it causes wire to press outwards causing contact with the inside of the metal ring. i believe that is what many hardcore electronics engineers do. however those tools are incrdibly expensive and you require a different one for every size hole you are connecting to

Neo2003 · « **Reply #113 on:** June 13, 2003, 07:30:00 PM »

solder_man: This is easier, since you got you pin header installed and you chameleon quick solder stick on the pin header, so it is more easier to test the voltage there, but you are right, you can test conductivity, but you will have to remove the motherboard out again for this test, which sometime is not as good ...

Prophetz · « **Reply #114 on:** June 13, 2003, 07:46:00 PM »

Dont want to sound like a smart ass but are any of you using flux? It makes a world of difference! Just put a little on the spot you want to solder, then the solder will just simply flow in that area!

solder_man · « **Reply #115 on:** June 13, 2003, 09:54:00 PM »

Ahhh yes, but the saga continues. Despite following the BIOS burning intructions to the letter, I can not get the Cromwell BIOS to recognize the CD. After inserting the CD it displays the message, "Waiting for Drive".

That's it. It does not load. I have tried two different types of CDRW media, and also used a 50+MB DUMMY.BIN file in addition to my 256KB D6 Bios file, renamed per instructions.

Thoughts???

solder_man · « **Reply #116 on:** June 13, 2003, 10:44:00 PM »

I'm not sure if my soldering the P and E points had something to do with this. The CD loads now, but only if I have pressed the Eject button to start the XBOX.

I only post this information in hopes that it will help someone else... I'm going to try several more CDRW file and burning combinations.

---Edit---
(Note: Don't bother trying to burn CDs with CDR media... it simply will not work unless you are uber l337!)

explicitlyrics100 · « **Reply #117 on:** June 14, 2003, 05:42:00 AM »

you have to fully wait until it says waiting for cd drive before inserting the cd - otherwise it doesnt initialise. also you could try and different burning program - im just giving u some ideas

solder_man · « **Reply #118 on:** June 15, 2003, 02:45:00 PM »

After much testing with different CDRW media, and the creatiion of many silver coasters.... I gave up trying to load the BIOS in Bank 0 via the Cromwell BIOS loader. I downloaded the software programmer.... and flashed 3 banks in 20 minutes and whallah.... a blue noani boot up screen.

explicitlyrics100 · « **Reply #119 on:** June 16, 2003, 02:11:00 AM »

splendid! it seems peoples chameleon's are starting to work a bit more often because people are following the steps a bit more precisely and making sure their soldering is up to the task, gd gd

Author Topic: Chameleon (Read 1334 times)