JmE

Is anyone bothered by the PXBus reading at 99 MHZ yet?

I checked with Anton earlier today and he suggested using the fetch function of his Pocket Hackmaster. I did and it confirmed what CPUID was showing.

Does it look like the Axim defaults to 99 MHZ instead of the 199 MHZ the PXA255 should be or is it a problem with CPUID?

-JmE-

Astounded EEG

is there an implied fix here? just change the LMN settings to something else?

JmE

I changed mine to L=27 (which it is already) M=4 and N=1 in Pocket Hackmaster. Then CPUID shows the same as the HP 2210: PXBus 199 MHZ, L=1 M=3 N=2 (I think, at least whatever Planet II posted in the other thread for his 2215).

I don't have any other fix. Indeed, I was suprised that this has not come up before. If the PXBus is running at half speed and has been since the PXA255 was put in Axims, I would think it should be a big thing, right?

The problem for me is that unless it can be confirmed and word get around, Dell won't even know about it!

I wonder if there is a registry key I can change to hard set the default values???

-JmE-

Astounded EEG

where can i get pocket hackmaster? is it in ppc city? i saw a post somewhere saying it wasn't free....

JmE

I think Xscalular is free. I will check it out on Pocketgear.com and post here.

If you want to look at Pocket Hackmaster, you can go to http://www.pockethackmaster.com and there are links for Palmgear and Handango.

I am not proficient enough with Pocket Hackmaster to get it to scale the way I want with the faster bus. I know it is me, not the overclocking software. I can hard set it for the right speed, but can't seem to set it correctly fo scaling with CPU load.

Also, I think the trial version of Pocket Hackmaster may not let you enter the manual values.

-JmE-

JmE

I must have been thinking of Turbotray as the freeware one. I can't seem to find it on the web and I am not sure it would run under 2003.

I am pretty sure Pocket Hackmaster does run under 2003 and I know you can clock the PXBus to the correct speed with it.

Sorry I couldn't find a free one.

-JmE-

JmE

Anton replied that it looks like Dell did not update the initialization for the CPU when they changed CPUs to the PXA255.

That means that the PXA255 Axims (including those running WM2003) are running slower than they need to be. Stock Axims are running like PXA250...

I am suprised others are not in this thread posting!

The link to Anton's reply is at http://antontomov.com/cgi-bin/ikonbo...r=1;&#entry264

-JmE-

cageyjames

Very interesting.... I'm amazed at this finding. How can this be true?

shmobile

My PXA255 is also showing PXbus = 99MHz. Since I'm running PPC2002, I don't have any noticable problems, and I would have never known about a performance problem since my previous PDA was a Jornada 430se, and there is no comparison between the two.

So, what's the best way to fix this problem?

Sean

JmE

Currently, I am using Pocket Hack Master...

I would really like to confirm it and get the info to Dell so they can issue a patch for those of us running PPC2002.

If anyone knows how to set the Scale settings on Pocket Hack Master so that the 200 MHZ PXBus is being used for the normal speed and up I would really appreciate the help.

-JmE-

HighPlainsD

I dont think you guys are correct. When you are in Normal or power save mode, the PX Bus Frequency is 99 mhz, but when you change to maximum performance mode, the PX Bus frequency is at 199 Mhz, and the performance still sucks. Im running a new 400 Axim with 2003.

JmE

I hope I am wrong!

However, whenever I set my Axim to run even at 400 MHZ (Normal) both CPUID and Pocket Hack Master report the PXBus as running at only 99 MHZ. It only runs at the correct 199 MHZ when it is forced to by 3rd party software.

That is with the Axim running at full speed default!

Please, I hope I am incorrect. Please someone prove or disprove this as it is annoying thinking I have to use software to get my PXA255 running where it should be to begin with!

-JmE-

XKalibuR

at 472mhz i get bus speed 200. but the ipaq & axim have the same external bus 100mhz.

jarget

My Axim says PXA250/B2 Is that the same?

JmE

Quote:

Originally posted by XKalibuR at 472mhz i get bus speed 200. but the ipaq & axim have the same external bus 100mhz.

Correct. They both should have and internal bus speed of 200 MHZ (199) and an external bus speed of 100 (99) by default. But the Axim does not seem to be doing so.

If you set your values manually to L=27 M=4 N=1 you can see the Axim running at the proper setting of 200 MHZ (199) internally and 100 MHZ (99) externally just like the 2215. The Axim should be doing this without any 3rd party software but it does not seem to be doing so.

-JmE-