Dnia 23-06-2006, piｱ o godzinie 15:15 -0400, Mark Gollahon napisaｳ(a):
> That USB host chip may physically be too large. :(
How about making a hole in PCB for it? So it goes a bit _into_ the pcb?
maybe this 1mm would be enough? We could always grind it a bit ;)
>
> And, yes, I was planning on 64-128Megs flash and 64-128Megs RAM (I'm hoping the newer technology chips are denser that their earlier counterparts).
Why bother putting system on this board? 128MB may not be enough for a
full featured system, CF cards are much cheaper per megabyte...
Why can't we have like 32kB there?
> If you do a chip swap on a board, your biggest problem is going to be putting the initial bits into the flash memory. Plus, if you put the bits in before soldering the chips down and if anything goes wrong, you're gonna have a REALLY hard time trying to figure out what.
Hmm, are there flash memories with a special serial interface (JTAG?
SPI?) as well as normal one? We could use this interface to flash it and
normal interface for a jornada.
> As to price, it is still too early to tell. I'm hoping the absolute most they will be is US$100, but since this is going to be low-quantity work (20 maybe 25 boards + 5 more for me to short out while testing... ;)), I really don't yet know. The memory and flash parts are pretty cheap nowadays....
Huh, 100$... One can almost buy a 720 for it ;). But I understand why...
Perhaps much less flash could make it cheaper?
PS. Sorry if I am wrong with electronics somewhere, I haven't played in
this area for like 6 years...
bye,
Filip
Received on Fri Jun 23 2006 - 15:51:27 EDT
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