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DE2 & V13   Message List  
Reply | Forward Message #160 of 321 |
Re: [minimigtg68] Re: DE2 & V13

TobiFlex wrote:

> Please remove the rem markers in line 168 and 171 from the File
> \Board\TG68.vhd
> correct Code:
> line 168: IF wr='1' THEN
> line 169: uds_s <= uds_in;
> line 170: lds_s <= lds_in;
> line 171: END IF;
>
> I hope this resolve the Problem.

Still no good Tobias. It finds the SD card and loads SPIHOST but hangs on
the grey screen.

I think you'll find that you need timing constraints and accurate clock skew
to get this design to work reliably. Running the SDRAM at 114MHz is going to
require some constraints to be met on the SDRAM I/O...

Regards,

--
| Mark McDougall | "Electrical Engineers do it
| <http://members.iinet.net.au/~msmcdoug> | with less resistance!"



Wed Sep 24, 2008 9:11 am

tcdevelop
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Message #160 of 321 |
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Hi all, Been having some problems with v13 and thought I'd see if anyone else has had the same experience as me!?! 1st of all, I've downloaded the new v13...
Mark McDougall
tcdevelop
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Sep 24, 2008
6:52 am

Dear Mark Now, i now for sure that the problem is in the SDRAM memory that cames with the news DE1 and DE2 boards. In the old boards they mounted the IS42S8800...
Javier Ruiz
soyandroid
Offline Send Email
Sep 24, 2008
7:12 am

... Yup, that's the problem alright! I've added constraints to the SDRAM pins and now I can boot Hybris on the DE2 without any problems at all! Let me know if...
Mark McDougall
tcdevelop
Online Now Send Email
Sep 24, 2008
7:43 am

... Seems I spoke too soon! :( Although I certainly booted Hybris 1st time, subsequent boots haven't been so successful. In any case, it looks like the SDRAM...
Mark McDougall
tcdevelop
Online Now Send Email
Sep 24, 2008
7:51 am

Hi Mark Please remove the rem markers in line 168 and 171 from the File \Board\TG68.vhd correct Code: line 168: IF wr='1' THEN line 169: uds_s <= uds_in; ...
TobiFlex
tobiflexx
Offline Send Email
Sep 24, 2008
8:08 am

... Still no good Tobias. It finds the SD card and loads SPIHOST but hangs on the grey screen. I think you'll find that you need timing constraints and...
Mark McDougall
tcdevelop
Online Now Send Email
Sep 24, 2008
9:11 am

... Interesting. I've just run the pre-compiled v13 build on my DE1 with the PSC SDRAM chip and it appears to run fine without crashing. I guess it's luck of...
Mark McDougall
tcdevelop
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Sep 25, 2008
11:27 pm

I am somewhat confused by this. According to the datasheet, the IS42S8800 is organized as 2Mx8x4, whereas the PSC chip is 1Mx16x4.. ... cames with the news DE1...
mrmartian1271
Offline Send Email
Oct 28, 2008
12:47 am

http://whoyouvotefor.info/altera_sdram.html here is info about sdram controller for new chip i havnt time too look by myself but maybe usefull for someone. ...
sergio_stunt
Offline Send Email
Oct 25, 2008
10:03 am
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