Terrible Fire Accelerators - Page 92

plasmab · 12 August 2017, 18:01

Firmwares aren't an "up to" thing. They put a delay in place to cross the clock domain after N cycles of the fast clock. So expect things to be very picky about clock speeds. I'm running everything at the limit of performance

EDIT this is why putting a replaceable crystal on the board is stupid. We can do that for the A1200 cards

8 Bit Dreams · 12 August 2017, 19:04

Quote:

Originally Posted by Xicorpt

I have noticed that my CPLD's are the 7ns industrial version. Is it possible that the issue is timing related ?

I did try to figure it out by looking to the tf530_bus.v but I'm a bit lost on VHDL.

The next test that I'm think is to slow the clock to the lowest possible to exclude the possibility of chinese remarked FPU.

Yes, i can confirm, i had some 7ns Xilix cpld's, tryed them and got the same pattern as You.
sadly i am unable to change VHDL as i have no idea how to do it..

Quote:

Originally Posted by keith

Hi Plasma just idea if people buy the aliance industrial versions it's cheaper than the commercial version @same ns at an rs com suppliers, which is almost the same price as the iss ram, unless I am wrong / mistaken I have used industrial version 12tin but not soak tested, but it only a temperature range difference? Thanks in advance and you're a top bloke!

If correct should I do a request on the Bom?

have 12TIN memory installed on one board, and can confirm they working fine!

plasmab · 12 August 2017, 20:13

I had a chat about the alliance memory vs ISSI today with some EE's

We are wondering if the ISSI chips are really 1024K x 8 rebadged as 512K x 8 which expect the line A21 is connected to to float high because the lower bank didnt pass the QC tests. Just a theory but its possible.

8 Bit Dreams · 12 August 2017, 20:43

Quote:

Originally Posted by plasmab

I had a chat about the alliance memory vs ISSI today with some EE's

We are wondering if the ISSI chips are really 1024K x 8 rebadged as 512K x 8 which expect the line A21 is connected to to float high because the lower bank didnt pass the QC tests. Just a theory but its possible.

quite interesting! Rev.3 has A21 signal connected, sooo... will this experiment be seen on the live stream?

plasmab · 12 August 2017, 20:48

Once I get a working capture card.

Sent from my iPhone using Tapatalk

EzdineG · 12 August 2017, 22:02

Quote:

Originally Posted by plasmab

I had a chat about the alliance memory vs ISSI today with some EE's

We are wondering if the ISSI chips are really 1024K x 8 rebadged as 512K x 8 which expect the line A21 is connected to to float high because the lower bank didnt pass the QC tests. Just a theory but its possible.

I have a Rev 2 with ISSI RAM, which I presume doesn't have A21 connected. It doesn't fail systest like Rev 3 but the board is still just as unstable with this RAM.

[Ed] The docs do say NC, would suck if they had to go high just to function normally.

plasmab · 13 August 2017, 00:15

Quote:

Originally Posted by EzdineG

I have a Rev 2 with ISSI RAM, which I presume doesn't have A21 connected. It doesn't fail systest like Rev 3 but the board is still just as unstable with this RAM.

[Ed] The docs do say NC, would suck if they had to go high just to function normally.

They may have internal pull ups. NC = No Connect.

I think its unlikely but possible.

EzdineG · 13 August 2017, 00:20

Quote:

Originally Posted by plasmab

They may have internal pull ups. NC = No Connect.

I think its unlikely but possible.

Aye, I figured.

Have you had the chance to put yours together yet?

plasmab · 13 August 2017, 01:11

Quote:

Originally Posted by EzdineG

Aye, I figured.

Have you had the chance to put yours together yet?

Not yet. I will put together a new rev 3 from scratch for this which takes a few hours. have a nasty cold at the moment.

8 Bit Dreams · 13 August 2017, 11:55

Quote:

Originally Posted by plasmab

Not yet. I will put together a new rev 3 from scratch for this which takes a few hours. have a nasty cold at the moment.

Get well soon, mate!!!
Missin' Your streams..

plasmab · 13 August 2017, 12:05

Quote:

Originally Posted by 8 Bit Dreams

Get well soon, mate!!!
Missin' Your streams..

After i upgraded my PC my capture card doesnt work. I cant even get it to POST with my capture card in. So a new one is on its way.

mattymuc · 13 August 2017, 12:16

Get well soon, plasmab!

I think I have solved the stability issues with my TF530 now.
Some FPU made trouble... some CF made trouble... and I have to use your first Bus-jed with 40MHz for my 33MHz crystal and your latest RAM-jed.
I get illegal instruction crashes when using the 33MHz firmware and the latest Bus-jeds don't work at all.

So I had some timing issues.

The cards work much better now!

Sometimes the CF is not detected at first start. I get a kickstart screen then. But after a reset it boots.

Is there a reliable source for FPUs? Most of my china FPUs are fakes I think...

plasmab · 13 August 2017, 15:10

Ok so the Elgato capture card i bought to replace my startech is also defective and doesnt work on AM4.

No more streams for the foreseeable future.

keith · 13 August 2017, 15:17

Quote:

Originally Posted by plasmab

Ok so the Elgato capture card i bought to replace my startech is also defective and doesnt work on AM4.

No more streams for the foreseeable future.

Hello Plasma, I dare say you have already tried this so forgive me in advance have you tried the card / cards in a full 16x slot, or is the blue screen still happening with this so called work around. Sorry again if you have already tried.

plasmab · 13 August 2017, 15:27

Quote:

Originally Posted by keith

Hello Plasma, I dare say you have already tried this so forgive me in advance have you tried the card / cards in a full 16x slot, or is the blue screen still happening with this so called work around. Sorry again if you have already tried.

Tried all the slots. With my startech in the machine it wont even POST.

Elgato support told me their units would work but when it arrive (bought direct from them) it didnt. Epically fecked off with AM4/Ryzen as a platform... i wanna throw this PC out the window.

Bprepared · 13 August 2017, 20:37

@Plasmab - Have you seen this article?
https://community.amd.com/thread/213606

keith · 14 August 2017, 08:46

Plasmab get well soon, & I hope the AM4 Ryzen / chipset/ capture card problems get resolved soon, do not want to sound selfish here and off topic but missing the streams already.

plasmab · 14 August 2017, 16:19

Quote:

Originally Posted by Bprepared

@Plasmab - Have you seen this article?

https://community.amd.com/thread/213606

Yeah. I've even posted on that page

Sent from my iPhone using Tapatalk

Bprepared · 14 August 2017, 18:59

Ahh, yes I see your post now

I was looking at the getting a Ryzen with a B350 chipset, having second thoughts now, but maybe my USB capture device might be more compatible. Hope you feel better soon. :

Xicorpt · 14 August 2017, 19:49

Quote:

Originally Posted by 8 Bit Dreams

Yes, i can confirm, i had some 7ns Xilix cpld's, tryed them and got the same pattern as You.
sadly i am unable to change VHDL as i have no idea how to do it..

have 12TIN memory installed on one board, and can confirm they working fine!

Thanks, will try the 10ns first. As soon as the cpld's arrives I will post my findings....

Wishes of speedy recovery to plasmab !

12 August 2017, 18:01	#1821
plasmab Banned Join Date: Sep 2016 Location: UK Posts: 2,917	Terrible Fire Accelerators Firmwares aren't an "up to" thing. They put a delay in place to cross the clock domain after N cycles of the fast clock. So expect things to be very picky about clock speeds. I'm running everything at the limit of performance EDIT this is why putting a replaceable crystal on the board is stupid. We can do that for the A1200 cards

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12 August 2017, 20:13	#1823
plasmab Banned Join Date: Sep 2016 Location: UK Posts: 2,917	I had a chat about the alliance memory vs ISSI today with some EE's We are wondering if the ISSI chips are really 1024K x 8 rebadged as 512K x 8 which expect the line A21 is connected to to float high because the lower bank didnt pass the QC tests. Just a theory but its possible.

12 August 2017, 20:48	#1825
plasmab Banned Join Date: Sep 2016 Location: UK Posts: 2,917	Once I get a working capture card. Sent from my iPhone using Tapatalk

13 August 2017, 12:16	#1832
mattymuc Registered User Join Date: Jul 2017 Location: Munich / Germany Posts: 88	Get well soon, plasmab! I think I have solved the stability issues with my TF530 now. Some FPU made trouble... some CF made trouble... and I have to use your first Bus-jed with 40MHz for my 33MHz crystal and your latest RAM-jed. I get illegal instruction crashes when using the 33MHz firmware and the latest Bus-jeds don't work at all. So I had some timing issues. The cards work much better now! Sometimes the CF is not detected at first start. I get a kickstart screen then. But after a reset it boots. Is there a reliable source for FPUs? Most of my china FPUs are fakes I think...

13 August 2017, 15:10	#1833
plasmab Banned Join Date: Sep 2016 Location: UK Posts: 2,917	Ok so the Elgato capture card i bought to replace my startech is also defective and doesnt work on AM4. No more streams for the foreseeable future.

13 August 2017, 20:37	#1836
Bprepared Registered User Join Date: Feb 2017 Location: Cirencester, UK Posts: 113	@Plasmab - Have you seen this article? https://community.amd.com/thread/213606

14 August 2017, 08:46	#1837
keith Registered User Join Date: Jan 2017 Location: Eastbourne Posts: 88	Plasmab get well soon, & I hope the AM4 Ryzen / chipset/ capture card problems get resolved soon, do not want to sound selfish here and off topic but missing the streams already.

14 August 2017, 18:59	#1839
Bprepared Registered User Join Date: Feb 2017 Location: Cirencester, UK Posts: 113	Ahh, yes I see your post now I was looking at the getting a Ryzen with a B350 chipset, having second thoughts now, but maybe my USB capture device might be more compatible. Hope you feel better soon. :

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