Thread: Steve Jobs Spitting on Android :D This mean WAR
View Single Post
wmarone is offline wmarone
2010-10-24 , 16:37
Posts: 1,746 | Thanked: 2,100 times | Joined on Sep 2009
#91
Originally Posted by ericsson View Post
The kernel may be closed, but the information is "open"
http://rtos.com/images/uploads/EL_Ne...mber_2010.html

The iPhone 4 use ThreadX RTOS in the Infineon PMB9800, or X-Gold 618 baseband chip/cpu.

Separate = higher cost, more complex HW and higher power consumption.
Marginally more. You gain a lot in isolating the baseband, namely you remove RTOS dependencies from the OS on the applications processor and simplify the interface for the OS down to something known (Serial, USB) and the communications protocol (like the N900's phonet interface.)

It also allows the OS to be fully open and user-replaceable, unlike Symbian which has never (and is still not) been user replaceable. Overall it's an improvement.