OK, What? [Cotulla Twitter]

aaaaa0 · Nov 30, 2012

Dude, there are going to be a mountain of problems getting the thing actually to work completely and reliably on WP8.

There is a huge difference between getting it to sort of boot and sort of work (easy), and making it something actually usable (very very hard).

UEFI loader might be done, but ACPI is going to be screwed, power management screwed, WiFi screwed, Bluetooth screwed, phone modem screwed, graphics not/partially GPU accelerated, audio hw codecs, video hw codecs... list is gonna go on and on.

There is gonna be a mountain of work ahead if u want to make such a ROM actually self-hostable, good luck with that.

tfouto · Nov 30, 2012

Nigeldg said:
Nah, counter-intuitively it's actually class 2 cards you want for running an OS from the SD card. Class 10 performs the worst in this case.

I am sorry but i dont bite that. It a too generic statementto be made. I guess it depends from card to card.

Cotulla · Nov 30, 2012

well there are class 10 5~10MB/S. It's not hyper fast, but hey not that slow...

UEFI MAGLDR is really amazing. Wow...

Any chance of Windows 8 RT on HD2? I am kidding

The most important thing for SD is speed on the small blocks like 512 bytes and 4096 bytes.
For example one noname card 4Gb gives me 2.5mb/sec and Sandisk 16Gb gives me only 1.2mb/sec for 512 blocks.

For Windows RT it can be insufficient RAM, but it's possible to try

tfouto · Nov 30, 2012

Cotulla said:
The most important thing for SD is speed on the small blocks like 512 bytes and 4096 bytes.
For example one noname card 4Gb gives me 2.5mb/sec and Sandisk 16Gb gives me only 1.2mb/sec for 512 blocks.

For Windows RT it can be insufficient RAM, but it's possible to try

Doesn't Windows use Pagefile?

GodlikePL · Nov 30, 2012

Cotulla said:
The most important thing for SD is speed on the small blocks like 512 bytes and 4096 bytes.
For example one noname card 4Gb gives me 2.5mb/sec and Sandisk 16Gb gives me only 1.2mb/sec for 512 blocks.

For Windows RT it can be insufficient RAM, but it's possible to try

Im glad HTC Mozart has 576 instead of Leo 448, small difference but always better

Regards

Fears · Nov 30, 2012

I'm seriously proud for owning this phone !

Thanksbra · Nov 30, 2012

Cotulla said:
Hello,

For now it's actually just a proof of concept.
I honestly dunno how far it can goes forward; a lot of problems appear and not sure will be it's possible to solve them.
And not only to solve them, but get an acceptable user experience

It was implied as "a crazy experiment" at the start up time :laugh:

For now it's implemented only few functionality like SD card, screen output, touch screen input.
All other things are not working. I won't add "YET" it can be very hard to get some things to work.
and DFT didn't yet decided about future developments in that direction.

they can be right also . . .I don't know yet.
But NT is much more heavy system than CE. remember that.

Amazing....HTC Leo does never die!

nikola360 · Nov 30, 2012

GodlikePL said:
Im glad HTC Mozart has 576 instead of Leo 448, small difference but always better

Regards

HD2 has 576MB too but Windows Mobile 6.5 (Original HTC ROM ) on EU version use only 448 MB and the CPU use only 768Mhz insted 1Ghz (998Mhz real) but if you use custom rom you can use all power

retsam88 · Nov 30, 2012

I just can't describe how awesome Cotulla is.

It doesn't matter if it will run well in future or not, it's just a unbelieveable proof-of-concept that it's actually possible to run w8.

HD2 is a LEGEND

Nigeldg · Nov 30, 2012

tfouto said:
I am sorry but i dont bite that. It a too generic statementto be made. I guess it depends from card to card.

Whether or not you believe me isn't the question, just search and you will find a thread with a bunch of benchmarks showing that this is indeed the case

I guess you'll believe cotulla though

Sent from my HTC HD2 using xda app-developers app

GodlikePL · Nov 30, 2012

BTW, is HTC 1st gen bootloader hacked enough for WP8 rom or we'll have to wait for UEFI MAGLDR port from HD2?

tfouto · Nov 30, 2012

Nigeldg said:
Whether or not you believe me isn't the question, just search and you will find a thread with a bunch of benchmarks showing that this is indeed the case I guess you'll believe cotulla though

Sent from my HTC HD2 using xda app-developers app

Do you have the link to that thread?

Thanks

tejeskifly · Nov 30, 2012

Hmm, i think wp8 see only 483mb ram.

Wp7 see all of the ram?

Nigeldg · Nov 30, 2012

tfouto said:
Do you have the link to that thread?

Thanks

The post can be found here:

you guys if you are trying to run an OS from your sd then remember the higher the class generally the crapper your OS experience is going to be. Sequential times DO NOT MATTER. ITs the random read and writes. I have a sandisk 16gb class 2. You always want to go with sandisk. We have a huge thread in nookcolor general about this. It is proven that sandisk will have consistent speeds. Specially if you are gonna be running an os on it. The sandisk I'm using is pretty much better then any internal emmc. **** is blazingl...

Ok this is what you need to be looking for.

4k Qd32 from crystaldiskmark 2.240 (read) 1.140 (write) MB

sequential means nothing when you are running an os from it!!!

This is what your system will be running! Check out our thread out in nookcolor.

That post basically sums things up. If you want to access music and videos (both read and write) then a higher class is undoubtedly better, but if you're using it to run an OS then lower classed cards are usually better.

tejeskifly said:
Hmm, i think wp8 see only 483mb ram.

Wp7 see all of the ram?

I don't know about WP7, but Android sees around 403-411MB of RAM so 483 seems to be quite good.

Cotulla · Nov 30, 2012

Doesn't Windows use Pagefile?

It is. But it's not possible to get good performance with it.

Im glad HTC Mozart has 576 instead of Leo 448, small difference but always better

LEO is also 576.

Hmm, i think wp8 see only 483mb ram.

It's near 512 - 24 = 488 Mb
Actually after removing RAM for other subsystems remains 515Mb from 576Mb.
But some hardware need a fixed buffers.

Marvlesz · Nov 30, 2012

Nigeldg said:
Whether or not you believe me isn't the question, just search and you will find a thread with a bunch of benchmarks showing that this is indeed the case I guess you'll believe cotulla though

Sent from my HTC HD2 using xda app-developers app

I don't understand. If higher class will result in poor performance if you're running an OS. Why did securecrt say that you need a high class for running Android using NativeSD? And why do we even have NativeSD?

Proz00 · Nov 30, 2012

Cotulla said:
The most important thing for SD is speed on the small blocks like 512 bytes and 4096 bytes.
For example one noname card 4Gb gives me 2.5mb/sec and Sandisk 16Gb gives me only 1.2mb/sec for 512 blocks.

For Windows RT it can be insufficient RAM, but it's possible to try

windows standard 8 is much smaller

and no hardware lock like windows RT

edit oh its not arm :9

windows rt could be lited manually tho

stealth21 · Nov 30, 2012

retsam88 said:
I just can't describe how awesome Cotulla is.

It doesn't matter if it will run well in future or not, it's just a unbelieveable proof-of-concept that it's actually possible to run w8.

HD2 is a LEGEND

I believe you are wrong!

The real legend is @Cotulla

He is the one, who made all of those happening come true..
I just want thank you thank you thank you :good::good::good:

NOTE: No matter what happens in the future, You are the one who made us extend our phone usage and you are the main reason we all were introduces to android and WP7.. If its not worth the time developing the software its would be totally understandable!

A man Vs. Microsoft..
Cotulla 5 - Microsoft 0 :laugh::laugh:

jskenderi · Dec 1, 2012

stealth21 said:
I believe you are wrong!

The real legend is @Cotulla

He is the one, who made all of those happening come true..
I just want thank you thank you thank you :good::good::good:

NOTE: No matter what happens in the future, You are the one who made us extend our phone usage and you are the main reason we all were introduces to android and WP7.. If its not worth the time developing the software its would be totally understandable!

A man Vs. Microsoft..
Cotulla 5 - Microsoft 0 :laugh::laugh:

True, but don't forget bepe too. Great team! Thanks very much to both of you!

Gesendet von meinem NexusHD2

antonizoon · Dec 1, 2012

Nigeldg said:
That post basically sums things up. If you want to access music and videos (both read and write) then a higher class is undoubtedly better, but if you're using it to run an OS then lower classed cards are usually better.

For SDCard speeds, you can't just depend on some person's experiences and assertions, especially when SDCards vary so much from size to size and brand to brand. There are too many variables to single out classes as the issue.

Each card is unique, and instead of depending on some trend, we should judge each card by performance only.

http://www.heise.de/download/h2testw.html (it's in German, use Google Translate)

You can use this program (or some other reliable test) to test SDCard write speeds for small, medium, and large files. The better the performance with small files, the better your OS will run.

It's also useful for discovering fake SD cards. The majority of SanDisk cards on the internet are fakes; with the test, at least you can see if your card is bad.

OK, What? [Cotulla Twitter]

New member

Senior Member

Retired Senior Recognized Developer

Senior Member

Senior Member

Senior Member

Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Retired Senior Recognized Developer

Senior Member

Senior Member

Senior Member

Senior Member

Member

Similar threads

Top Liked Posts