XBOX BOOTS PROPERLY, BUT THE MOD CHIP DOES NOT APPEAR TO BE FUNCTIONING
The most probable cause for this is that the MS BIOS is booting and not the BIOS that is on your mod chip. This is likely to be caused if your D0 is not soldered properly. When the current running through D0 is grounded, that is the go-ahead for the Xbox to boot the BIOS from the LPC points. If D0 is not grounded, your mod chip is virtually invisible to the Xbox. Since the D0 is the smallest and arguably the most difficult point in an LPC install, try resoldering it. Make sure that the solder is actually holding it down, and not just lacquer that had melted around the wire and then hardened. If you are having difficulty soldering to the D0, you may want to consider soldering to the alternative D0 on the bottomside of the board.
If you are absolutely positive that you have soldered the D0 correctly (your DMM shows voltage when on), then you may want to check the ground connection. Bear in mind this is not likely to be the problem. With Xecutor mods, the ground will be screwed down to the nearby hole in the motherboard, so make sure this screw is tight. With the Matrix mod chip, the screw that holds the mod in place grounds it, so this is generally not a worry. With the Chameleon mod chip, the grounding is done by LPC pin 2 (the one next to the square-framed LPC pin, which is pin 1), so you will have to ensure that this point is soldered properly.
As explicitlyrics100 has pointed out, Xecuter2 BIOSes show the XECUTER
2 logo beneath the X on startup, while other BIOSes, such as the EvoX BIOS, will look identical to the MS BIOS. If you are using a standard EvoX BIOS, do not make the assumption that the chip is not functioning; it is worth an extra check. Just insert a backup or your EvoX boot disc (explained here
). This post has been edited by Xeero: Jul 9 2003, 10:24 AM