QUOTE(lordvader129 @ Jan 6 2010, 01:27 AM)
the bios is loaded from the xyclops chip, along with information from some other previously separate chips IIRC
you can see it to the right of the IDE cable in this picture http://pictures.xbox-scene.com/4/xboxv16/xcalibur_02xs.jpg
you cant flash it because unlike on previous its not an EEPROM (Electronically Erasable-Programmable Read Only Memory) so on an xbox the TSOP and the EEPROM are actually both EEPROMs, although the EEPROM is not a TSOP (confused yet? lol)
as for how it can boot without a TSOP, TSOP means Thin Small Outline Package, and refers to nothing more than the physical shape of the chip
well thats all the interesting but otherwise useless information for today :)
I'm totally new, please forgive my ignorance.
I opened my box; it appeared to be 1.6 or later. There is an small EEPROM (probably 256x8 (2Kbits))
next to the Jtag sockets. The chip labeld: 4M90W L02.
I searched and found that it is likely to be an EEPROM (I2C interface) chip but couldn't find
any spec on this chip.
1. Could anyone happen to know what chip it is and where to find the spec?
2. I'm hoping that the HD key is stored on this chip. If I can read it out and
find the HD lock key, I hope I can prepare another bigger HD with HDD builder package,
lock it with the same HD lock key, and plug it in. After the BIOS successfully unlock
the HD, I hope it just gonna boot the new OS on the drive without halting...
Is it something reasonable to persuit or it's just plainly stupid and I shouldn't