Could I Make My Own Xray 3?
Posted 09 July 2009 - 06:44 PM
Posted 10 July 2009 - 12:49 AM
Posted 10 July 2009 - 03:48 AM
Edited by Joes2Silly, 10 July 2009 - 03:50 AM.
Posted 10 July 2009 - 04:30 PM
I already have at least 20 SST 49LF020 chips and PLCC sockets so that's not really the problem. By the way, what bios would I flash to it if I did make it?
Any 256Kb sized bios appropriate to your xbox version - examples are EvoX M8+ 1.6 for 1.6 or IND-Bios 5003 for 1.0-1.5. For LBA48, .6 or .67 depending if you want F or F/G drives.
Posted 11 July 2009 - 12:44 AM
Yes, this is going to be a 29 wire modchip
The cheapmod is a lpc installed homebrew chip and the schematic was available. I'm not familiar with 29 wire modchips and don't know if the schematics are available.
EDIT: Found a diagram but no idea what bios to use. How does a 29-wire modchip work?
Edited by ldotsfan, 11 July 2009 - 12:49 AM.
Posted 18 July 2009 - 09:20 PM
Posted 02 September 2009 - 07:28 AM
Posted 03 September 2009 - 08:31 AM
The 29 wire modchips simply replaces the original Tsop flash on the mobo. As modern modchips use the LPC bus for their connection to the mobo, the 29 wire modchips simply use adress and data lines.
Connecting 29 wires to the mobo correctly is not an easy job. That's why they started to use the LPC bus.
There is an SST flashrom chip that has the LPC interface embedded in the chip. That's the one that is used for a cheapmod.
If you boot from the LPC bus, there is no way anymore to access the on board flash. So, for that reason you need a 29 wire modchip if you bricked your mobo due to a bad tsop flash.
Posted 05 December 2009 - 04:42 AM
I too am looking to make a few modchips.
BTW, the SST49LF020A is an LPC flash. You would probably have better luck using the type of chip in the diagram that idotsfan posted. But from what I gathered, you can only use the homebrew 29 wire modchip on a version 1.0/1.1 xbox.
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