12-17-2006, 04:22 PM | #1 |
Zealot
Posts: 106
Karma: 348
Join Date: Dec 2006
|
21 Hrs, How?
Can anyone explain to me how iRex are able to claim that the battery will last 21hrs, when from reading they are a good bit off that (8-10hrs).
Surely if iRex seem to know that they can get 21hrs out of the battery, it should be pretty easy to implement. Am I missing something? |
12-17-2006, 04:46 PM | #2 | |
Evangelist
Posts: 458
Karma: 293
Join Date: May 2006
|
Quote:
Last edited by jęd; 12-17-2006 at 04:49 PM. |
|
Advert | |
|
12-18-2006, 11:04 AM | #3 | |
Banned
Posts: 1,300
Karma: 1479
Join Date: Jul 2006
Location: Peoples Republic of Washington
Device: Reader / iPhone / Librie / Kindle
|
Quote:
Their original goal was based upon using an Intel CPU used in many cell phones, an e-Ink panel and a bunch of stuff that would be powered down most of the time: wifi, wacom, ethernet. From my own investigations it seems things went wrong with the buttons, which should have been the easiest thing to get right... |
|
12-18-2006, 01:31 PM | #4 | |
Fulfilled but not by iRex
Posts: 932
Karma: 286846
Join Date: May 2006
Location: London
Device: Far too many
|
Quote:
Looks lik this is still claimed on their website... |
|
12-18-2006, 03:52 PM | #5 |
Banned
Posts: 1,300
Karma: 1479
Join Date: Jul 2006
Location: Peoples Republic of Washington
Device: Reader / iPhone / Librie / Kindle
|
I guess they missed some scrubbing.
|
Advert | |
|
12-20-2006, 02:35 PM | #6 |
Connoisseur
Posts: 52
Karma: 10
Join Date: Aug 2006
|
Currently CPU in iLiad always works with frequence 400 MHz. iRex plan to slow down CPU for time between page turns in PDF reader, for example.
|
12-20-2006, 04:28 PM | #7 |
Banned
Posts: 1,300
Karma: 1479
Join Date: Jul 2006
Location: Peoples Republic of Washington
Device: Reader / iPhone / Librie / Kindle
|
Yep one of these days iRex will grab the bull by the horns and update this code...
linux-2.4.19/arch/arm/mm/proc-xscale.S Code:
/* * cpu_xscale_do_idle(type) * * Cause the processor to idle * * type: * 0 = slow idle * 1 = fast idle * 2 = switch to slow processor clock * 3 = switch to fast processor clock * * For now we do nothing but go to idle mode for every case * * XScale supports clock switching, but using idle mode support * allows external hardware to react to system state changes. */ .align 5 ENTRY(cpu_xscale_do_idle) mov r0, #1 mcr p14, 0, r0, c7, c0, 0 @ Go to IDLE mov pc, lr |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Call "print newspapers" as "snailpapers" because they arrive with news is 12 hrs old | taglines | Lounge | 4 | 02-05-2010 10:01 AM |
Broomfield out of stock in 24 hrs... | jmdor | Sony Reader | 2 | 11-02-2006 06:27 PM |