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I finally got them! Infineon 256M Mobile SDRAM!
After months of waiting, and lying through my teeth to get the samples, I finally got the Infineon SDRAMs to upgrade my 32/32 axim to a 64/32. I will do the mod next week, and post the results. If anyone finds another manufacturer that is really shipping the 512 megabit parts, in the TSOP package, please let me know; but is seems like that is where the parts transition to BGA.
FYI: my next project is INTERNAL 801.11B! If you remove the CF socket on the AX, then hard-wire the wireless card in, you can use part of the dummy-card (that came with the AX) to seal up the opening. The only problem I see is signal reduction caused by my all-aluminum custom (modified to include super-clip belt clip)Rhino-skin case. With luck, I'll be able to add an SMA connector for war-driving (my company builds 802.11 products, so I have the lab equipt).
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