iPhone CPU supports hardware Java acceleration, yet it is turned off, why?

Posted by Stefan on Tuesday, July 10th, 2007 at 12:10 am under Cingular/AT&T, Into iPhone, Mac OS, iPhone, Apple, Java

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Java applications running a bit slow on your mobile? You probably don’t have Jazelle in there, a technology created by ARM that speeds up the execution of Java applications and lowers RAM consumption by a factor of 8. It also allows for multiple Java applications to be run with minimal overhead. Why is such an advanced technology not turned on by default? Why haven’t I heard of other phone manufactures using this?

Throw this on S40 and you will have the perfect mobile phone operating system.

[Via: Ed Burnette’s Dev Connection]


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    • 6 Responses to “iPhone CPU supports hardware Java acceleration, yet it is turned off, why?”

    • Lexx says:
      July 10th, 2007 at 7:34 am

      HUH?
      Ever heard of Sony Ericsson? Since the K750/W800 line they are using ARM926EJ(azelle) in most of their devices.
      Check out specifications of smartphones and PPCs, i.e. with ARM-based TI OMAP CPUs. Even old models like MPx220 from Moto (OMAP 1611) as well as the masses from HTC driven with OMAP850 or better CPUs support Java acceleration by hardware since they’re equipped with the same 926EJ-core and come in handy of this acceleration.

    • Stefan Constantinescu says:
      July 10th, 2007 at 7:37 am

      I haven’t known about this. Thanks for pointing me in the right direction.

      I’ve never followed SE, until now! :twisted:

    • Video: Nokia 8600 and BH-701 Bluetooth headset unboxing - IntoMobile says:
      July 10th, 2007 at 7:51 am

      […] I’m urging Nokia to use the multitasking JVM that is part of Jazelle. Sony Ericsson uses it, the iPhone might support it in the future […]

    • Video: Nokia 8600 and BH-701 Bluetooth headset unboxing - Pocket.Net - Mobile 2.0 says:
      July 10th, 2007 at 8:14 am

      […] I’m urging Nokia to use the multitasking JVM that is part of Jazelle. Sony Ericsson uses it, the iPhone might support it in the future […]

    • Will Park says:
      July 10th, 2007 at 11:42 am

      I think it’s disabled because Steve doesn’t own Java - so he doesn’t want to let the iPhone use it. Selfish Jobs.

    • Sun working to bring Java to iPhone - true mobile computing for enterprise and otherwise says:
      March 8th, 2008 at 5:41 pm

      […] Java Standard Edition to the iPhone (which might indicate that Sun will try to make use of the Jazelle technology that's lying dormant in the iPhone's CPU). And, Sun doesn't exclude the possibility […]

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