Quote from miauto on August 23, 2011, 10:44
i was wondering if wouldn't be awesome releasing a ARM9 RPi embedded system apart from the ARM11. ARM9 is a very powerful processor that can run Linux or Android perfectly, and i am sure you could achieve a 15$ pcb with a form factor of a usb memory.
I am sure would be an awesome idea for people that doesn't need an ARM11 power processor (applications that are not power oriented), but needs something with a smaller form factor than a credit card size, and cheaper price of course.
We would need to find a SoC that uses the Arm 9 and still has the multimedia capabilities of the current chip, and as far as I know they are not available. Arm9 is pretty old now, and there is little or no cost difference in silicon to go to 11 over 9, so there would be little cost benefit. You could go for a simple Arm9 core with no GPU which would be cheap (if you can find one), but very slow in comparison to the current design. Arm9 also uses the Armv5 instruction set, which is becoming less well supported (if at all?) by Linux distro's
Check out http://en.wikipedia.org/wiki/A.....chitecture
for more Arm details.
Going to the smaller form factor, the cost is pushed towards other components, not really the CPU - smaller pitch parts are much more expensive, and would be required at this sort of size.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
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