The A2 wiki page has been updated (new photo and info): http://wiki.laptop.org/go/XO_1.5_A2
The good news is that we have a solution for the occasional SD errors! Details at: http://wiki.laptop.org/go/XO1.5_SD_card_ECO I have a good circuit modification which enables 500K+ suspend/resume cycles. The bad news is that I'm having trouble getting Quanta to accept it, as they have an alternate one (which crashes after 100+ cycles). Much of the past week was spent trying to prove that there was a difference in the ECOs. Quanta assigned a new power engineer, and he found a nasty power supply layout problem on his first week. As is usual with these early prototypes, I end up playing around with different ECOs for a while before finding appropriate ones. This leaves a workbench scattered with "fuzzy" motherboards in various states of ECO. Now I have to go through and restore these earlier versions and debug/fix any stragglers. Nine of the A2's have left 1CC, one temporarily. Two motherboards are dead and six are sick, in one form or another, and two more are testing some particular ECO. Four units are used by 1CC developers, and most of the remaining units require ECOs for proper performance of either suspend/resume and/or SD. I will ECO the remainder and we will send more out after using them to run tests for a couple of days. The B1 motherboard is going through layout right now. We are trying to stay with a 6 layer board, for FSB and DDR2 trace impedance reasons, but the WLAN daughtercard cutout is restricting routing. I am being a real pain about getting both the processor serial port and SPI programming port on the bottom (exposed) side of the motherboard. The hurdle for next week is to test SD card access under Linux suspend/resume, and to do the power measurement wiring I meant to do last week. It looks like B1 pre-build will be mid-August, which means B1 laptops should become available beginning of September. Cheers, wad _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
