Hi, a) The newest RC2 schematic.
http://en.qi-hardware.com/wiki/Milkymist_One_Schematic_Change_History#20101018 <http://en.qi-hardware.com/wiki/Milkymist_One_Schematic_Change_History#20101013> b) And the newest routing file, http://en.qi-hardware.com/wiki/Milkymist_One_RC2_Layout_History#20101018 Since the 'memory instability' phenomenon have been solved, so even have some vias under fpga which have also been corrected now. Surely there still have few vias are kept as RC1, few of them are quite not easy to fix to not interfere buses inside. So I suggested not to change or fix them too much in order to avoid of unexpected err during process as possible. How do you think? The rest are to be done this week: 1, DRCs for routing and fixing them, including clearance checks, etc. 2, Place/move R176~R179 to be in one row and easy to see them. 3, Change MK1 footprint to meet part. 4, Change all 0402/0603 footprint smaller as: http://en.qi-hardware.com/wiki/File:0603_0402_stencil_aperture_dimension.png This is recommended from SMT Minbo vendor to avoid of the Manhattan Effect, *'drawbridging* or *stonehenging*' phenomenon. ex1. http://wenku.baidu.com/view/b101ba2de2bd960590c677eb.html ex2. http://www.xs4all.nl/~tersted/PDF_files/Plexus/tombstoning.pdf 5, Move an clearance between 4.3V parts area and J12. 6, Indicate "+/- 5%" near J11 on silkscreen to let user use a DC 5V IN with +/- 5%. 7, Expand a larger soldered thermal area under the pads of U10. Pls commment this newest routed file. Thanks. c) Current soucring status is here. http://en.qi-hardware.com/wiki/Milkymist_One_RC2_BOM The 98.9% of parts have been all ordered, you can check the sourcing status. Except some pins headers I'll prepare them prior to smt run. Including to find a short height of pins for J5 which is interfere to JTAG/Serial board. THe flash JS28F256J3F105 chip I bought last time the vendor http://www.synnex.com.tw/oem_cover.htm sold out all this stock. The new vendor I tried this time is also an authorized distributor http://www.wpi-group.com/ and have ordered 40pcs of JS28F256J3F105A, please check http://www.numonyx.com/Documents/PCN/PCN109025-04_J3_130_65nm_conversion.pdf http://www.numonyx.com/Documents/PCN/PCN109526-03.pdf WPI the Numonyx PM said they had have also monster customer here Taiwan. So I'll realize out the truthfulness. 1, Why this part does not easy to source in Digikey, mouser or ? 2, Why only Avnet Express (on the web)or other Asia bigger distributor (like here but no any stocks revealed on webs) have it? d) To be done later: http://en.qi-hardware.com/wiki/Milkymist_One_run_2_schedule#Packaging_Parts_Accessaries Anti-Static bags, box and positioners. I will also work on them. And update it. -- Thanks, Adam
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