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Index > Non-x86 architectures > Raspberry Pi

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sleepsleep



Joined: 05 Oct 2006
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sleepsleep
kinda awesome! Smile wanna get one raspberry pi too!
Post 11 Jun 2012, 05:58
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Dex4u



Joined: 08 Feb 2005
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Dex4u
sleepsleep wrote:
kinda awesome! Smile wanna get one raspberry pi too!

Thanks sleepsleep,
Post 11 Jun 2012, 12:01
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Dex4u



Joined: 08 Feb 2005
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Dex4u
Good news for R-PI OSDev's, i have got the hdmi working, so much better graphics Very Happy
Post 13 Jun 2012, 18:26
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krom



Joined: 05 Jun 2012
Posts: 13
krom
@Dex4u, great news getting hdmi working, I can't wait to code for the R-PI =D
Have you got quad's, tri's or any other gpu stuff working?
Also did you fix that problem with so many tries to the mailbox to get the gpu to initialize gfx?
I have a feeling that if there is a vertical sync equivalent in the gpu, maybe try sending mailbox messages after syncing...
Anyway good luck with everything, you are working out some great stuff =D
Post 13 Jun 2012, 19:39
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
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Dex4u
krom wrote:
@Dex4u, great news getting hdmi working, I can't wait to code for the R-PI =D
Have you got quad's, tri's or any other gpu stuff working?
Also did you fix that problem with so many tries to the mailbox to get the gpu to initialize gfx?
I have a feeling that if there is a vertical sync equivalent in the gpu, maybe try sending mailbox messages after syncing...
Anyway good luck with everything, you are working out some great stuff =D

Thanks krom, Yes i got that problem sorted, the only problem now is it cut a part of the screen off on the left hand side, about 30 pixel wide, (thats in composite video).
The hdmi i test had a black background, so will use a image tomorrow to see if the problem is the same, but it more likely off at the bottom, as the monitor is wide screen and the RiscOS port as a problem with the bottom part of the desktop chopped off.
"quad's, tri's or any other gpu stuff working?"
Not tried any other GPU stuf just doing the basic stuff, need to get a basic OS working, than i can work on the GPU stuff.

The guy behind the GPU says the only interface they may give for the really fast stuff will be though some asm code, thats cool by us Wink
Post 13 Jun 2012, 21:28
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krom



Joined: 05 Jun 2012
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krom
Dex4u wrote:
The guy behind the GPU says the only interface they may give for the really fast stuff will be though some asm code, thats cool by us Wink
Cool, it would be great to have access to that!
Post 13 Jun 2012, 22:12
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Dex4u



Joined: 08 Feb 2005
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Dex4u
I have now tested hdmi with a image and it works great, fills the whole screen as it should, so it must be a composite video problem or it setup for wide screen by default.
Post 15 Jun 2012, 13:04
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Dex4u



Joined: 08 Feb 2005
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Dex4u
Hdmi and new R PI setup screenshots.

Image

Image
Post 17 Jun 2012, 18:31
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kalambong



Joined: 08 Nov 2008
Posts: 165
kalambong
Someone made an expansion board for ras-pi and released the entire schematics, including the Gerber file, to the public, open-source

Get more info at http://slashdot.org/comments.pl?sid=2938087&cid=40446857
Post 26 Jun 2012, 06:18
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Dex4u



Joined: 08 Feb 2005
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Dex4u
DexOS running on Raspberry pi, running a picture frame demo
http://www.youtube.com/watch?v=Hc-5epQTul8&feature=plcp

The video is bad quality, but you get the idea.
Post 01 Jul 2012, 15:37
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kalambong



Joined: 08 Nov 2008
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kalambong
Awesome !!

Dex4u, may I suggest that you go edit the wikipedia page @ http://en.wikipedia.org/wiki/Raspberry_Pi

Specifically, @ http://en.wikipedia.org/w/index.php?title=Raspberry_Pi&action=edit&section=5 - where they have an entry for "Planned Operating System" and add in your DexOS
Post 02 Jul 2012, 05:44
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Dex4u



Joined: 08 Feb 2005
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Dex4u
kalambong wrote:
Awesome !!

Dex4u, may I suggest that you go edit the wikipedia page @ http://en.wikipedia.org/wiki/Raspberry_Pi

Specifically, @ http://en.wikipedia.org/w/index.php?title=Raspberry_Pi&action=edit&section=5 - where they have an entry for "Planned Operating System" and add in your DexOS

Thanks kalambong,
But wikipedia does not like you entering anything, that does not have a big following Crying or Very sad.
Post 02 Jul 2012, 11:27
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blind_dragon



Joined: 20 Jun 2012
Posts: 12
blind_dragon
Interesting project

Was it hard to get the bootloader going?
is the boot loader written in arm launguage?
Post 02 Jul 2012, 16:06
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Dex4u



Joined: 08 Feb 2005
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Dex4u
blind_dragon wrote:
Interesting project

Was it hard to get the bootloader going?
is the boot loader written in arm launguage?


The boot loaders that boot linux will boot a file from SD card called kernel.img.
So you boot by saving your kernel as a kernel.img file (bin file) and puting it on the SD card.
All my code is FasmArm.
Post 02 Jul 2012, 16:44
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Dex4u



Joined: 08 Feb 2005
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Dex4u
A cool fractal demo by krom.
Running bare metal on Raspberry Pi.
Using FasmArm of cause.
Image
Post 04 Jul 2012, 20:49
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malpolud



Joined: 18 Jul 2011
Posts: 344
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malpolud
Source codes, sources... Smile
Post 04 Jul 2012, 21:12
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sleepsleep



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sleepsleep
cool,, Smile must be really enjoying doing all this stuffs.
Post 05 Jul 2012, 13:22
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Dex4u



Joined: 08 Feb 2005
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Dex4u
I have put a tutorial about coding bare metal on the R-PI, it using a basic like language, that users fasm macros called DexBasic (a cross between DexOS and FBasic).
But you could just as easy use fasmarm and call the functions.

http://www.dex-os.com/DexBasic/DexBasic.htm
Post 21 Jul 2012, 18:01
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sleepsleep



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sleepsleep
your next toy, a more powerfull gooseberry?
http://gooseberry.atspace.co.uk/?page_id=13
Post 21 Jul 2012, 20:09
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
sleepsleep wrote:
your next toy, a more powerfull gooseberry?
http://gooseberry.atspace.co.uk/?page_id=13

Yes, i been reading up on them.
Post 21 Jul 2012, 21:28
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