XO-1.5 B3

[John Watlington]

We received 15 XO-1.5 B3 motherboards Friday, straight from the  
assembly line.
Five of them have been packaged in CL1A cases for 1CC developers, and  
another
5 are running tests on the sawzall testbed (outside the tech room).

There are several changes from B2:
- change in SDIO slot assignment to move the WLAN to one with working  
suspend operation
- power to the internal SD card (slot 3) is now controlled by the EC
- DCONIRQ routed to an usable interrupt input
- A second interrupt from the EC to the host is provided, to work  
around ACPI complexities.
- change in power distribution to handle theoretical overload of  
3VPCU circuit
- use of QMI WLAN module (instead of AzureWave).   The WLAN card now  
uses
   +1.8V from the motherboard, instead of linear regulators (from 3.3V).
   This is a different pinout than the AzureWave as well.   Modules  
should be
    available 11/18 or so.
- All have only 512 MB (four memory chips).   Due to DRAM prices  
right now, we
   will offer this to some customers and need to test it more  
extensively.

Eight of these are running SD tests right now, waiting to test  
suspend/resume.
Two are in the hands of Paul and Chris.   One will be come a new  
tinderbox next
week, and the remainder will be put in cases after we finalize the  
MPPT ECO.

Information is up at:  http://wiki.laptop.org/go/XO_1.5_B3

Cheers,
wad