Terrible Fire Accelerators - Page 186

alenppc · 12 October 2018, 16:08

Quote:

Originally Posted by hooleydog

Ok will do Steve, but I sure would like a parts list please (Begging in my knees).. That's all I ask... But it's a shame that the T530 only had 2MB of fast ram on it (4Mb would better), and if I add more ram then the extra ram on the side slot. It's still only 16bit memory.... Don't get me wrong..It's still a great board though (Not complaining)..

As you can see in this thread, work is in progress on the 4 mb version...

project23 · 12 October 2018, 16:09

Yeah and as alenppc says the 534 is literally around the corner.

By the time you get the parts for putting a 530 together, they'll probably be selling 534 boards.

In fact i'm only currently building my 530 because i'd already bought the parts, just damaged the original board. It's also good practice with those tiny CPLD pins. It'll probably go in an Atari in the end since as soon as the 534 is available i'll be building one for my main mig.

plasmab · 12 October 2018, 16:27

Quote:

Originally Posted by hooleydog

Ok will do Steve, but I sure would like a parts list please (Begging in my knees).. That's all I ask... But it's a shame that the T530 only had 2MB of fast ram on it (4Mb would better), and if I add more ram then the extra ram on the side slot. It's still only 16bit memory.... Don't get me wrong..It's still a great board though (Not complaining)..

The parts list is obtained by loading the schematic in eagle and running the BOM script. I never published a BOM for it because I never figured out all the values. I abandoned it before then.

plasmab · 12 October 2018, 16:30

Quote:

Originally Posted by alenppc

The 534 also doesn't like the 50 Mhz clock. It worked fine at 40 for me, but 50 produces this, see pic.

Expected. The ram is being read too soon after making the request for data at that speed. I’ll put a 1WS ram cpld firmware up for you later

alenppc · 12 October 2018, 16:51

Quote:

Originally Posted by plasmab

Expected. The ram is being read too soon after making the request for data at that speed. I’ll put a 1WS ram cpld firmware up for you later

Big difference in comparison to the old 12ns sram, eh?

hooleydog · 12 October 2018, 18:22

Quote:

Originally Posted by plasmab

The parts list is obtained by loading the schematic in eagle and running the BOM script. I never published a BOM for it because I never figured out all the values. I abandoned it before then.

Ok Thanks...

plasmab · 12 October 2018, 19:12

Quote:

Originally Posted by alenppc

Big difference in comparison to the old 12ns sram, eh?

Yeah. TBH unless we can make the burst work there isn’t much point in going over 40MHz.

8 Bit Dreams · 12 October 2018, 19:19

Haven't got my both TF520 cards running, Diagrom starts to boot, but quits few seconds later.. have all resitors 4k7, will swap these out for 2k and see what's changed. Strange is that both cards behaves the same..

@Stephen
Was thinking about to swap Cypres RAM on TF534 to Alliance, but decided not to do it,
will continue testing new fw's as we need this info for Wiki & othe users

alenppc · 12 October 2018, 19:46

@8 Bit Dreams

Since I have Alliance ram installed, I guess it makes sense to test both types, so you can keep the Cypress one (IMHO)

8 Bit Dreams · 12 October 2018, 20:27

Quote:

Originally Posted by alenppc

@8 Bit Dreams

Since I have Alliance ram installed, I guess it makes sense to test both types, so you can keep the Cypress one (IMHO)

Yes, that was my plan

it is just not happy above 24Mhz, otherwise works stable, Frontier was running all night long without a crash

super_adam · 12 October 2018, 21:16

Quote:

Originally Posted by 8 Bit Dreams

Haven't got my both TF520 cards running, Diagrom starts to boot, but quits few seconds later.. have all resitors 4k7, will swap these out for 2k and see what's changed. Strange is that both cards behaves the same..

I'm also using 4k7 in my both TF520s (first has plastic 68020, second ceramic). I finally got DiagROM and tested both.
Results:
- memory tests are ok (Amiga clock and 20MHz), no expansions installed, so pure 512Kb
- IRQ tests ok as well,
- graphics tests are crashing on Amiga clock, runs fine when clock is set to 20MHz,
- CIA tests are failing on 20MHz (don't remember if are ok on Amiga clock)
All test are ok when I use 68000.

Any idea why CIA tests can fail? What should I diagnose next?

8 Bit Dreams · 12 October 2018, 22:06

@super_adam
wow! That's intersting!!!
On what system are You running it? A500 or A2000?

plasmab · 12 October 2018, 22:25

Quote:

Originally Posted by super_adam

I'm also using 4k7 in my both TF520s (first has plastic 68020, second ceramic). I finally got DiagROM and tested both.
Results:
- memory tests are ok (Amiga clock and 20MHz), no expansions installed, so pure 512Kb
- IRQ tests ok as well,
- graphics tests are crashing on Amiga clock, runs fine when clock is set to 20MHz,
- CIA tests are failing on 20MHz (don't remember if are ok on Amiga clock)
All test are ok when I use 68000.

Any idea why CIA tests can fail? What should I diagnose next?

That looks like missing E clock. Did you try with the latest 520 firmware from the binaries repo?

super_adam · 12 October 2018, 22:51

Quote:

Originally Posted by 8 Bit Dreams

On what system are You running it? A500 or A2000?

On A500 rev.6a. Have you tested on A2000 only?

Quote:

Originally Posted by plasmab

That looks like missing E clock. Did you try with the latest 520 firmware from the binaries repo?

Will try it next, thanks for quick replies, really appreciate it.

8 Bit Dreams · 12 October 2018, 22:55

Almost forgot. If it's NTSC Amiga - CIA timings will fail!

super_adam · 12 October 2018, 23:02

Quote:

Originally Posted by 8 Bit Dreams

Almost forgot. If it's NTSC Amiga - CIA timings will fail!

Nope, it is not NTSC, I only have PALs

8 Bit Dreams · 12 October 2018, 23:09

Quote:

Originally Posted by super_adam

Nope, it is not NTSC, I only have PALs

Well...then it's E Clock

hooleydog · 12 October 2018, 23:49

WOW!! I've now got you talking about the T520 board.. Keep it up I say...

hooleydog · 13 October 2018, 00:00

Quote:

Originally Posted by 8 Bit Dreams

Haven't got my both TF520 cards running, Diagrom starts to boot, but quits few seconds later.. have all resitors 4k7, will swap these out for 2k and see what's changed. Strange is that both cards behaves the same..

@Stephen
Was thinking about to swap Cypres RAM on TF534 to Alliance, but decided not to do it,
will continue testing new fw's as we need this info for Wiki & othe users

Hi Just wondering.. What's the value of C3 and C4 caps please....

plasmab · 13 October 2018, 00:34

Quote:

Originally Posted by hooleydog

Hi Just wondering.. What's the value of C3 and C4 caps please....

Big round ones = 10uF
Regulator ones as per manual for regulator.
Everything else 100nF

12 October 2018, 16:09	#3702
project23 Used Register Join Date: Jul 2018 Location: Liverpool Age: 41 Posts: 437	Yeah and as alenppc says the 534 is literally around the corner. By the time you get the parts for putting a 530 together, they'll probably be selling 534 boards. In fact i'm only currently building my 530 because i'd already bought the parts, just damaged the original board. It's also good practice with those tiny CPLD pins. It'll probably go in an Atari in the end since as soon as the 534 is available i'll be building one for my main mig. Last edited by project23; 12 October 2018 at 16:17.

12 October 2018, 19:19	#3708
8 Bit Dreams Retro maniac Join Date: Feb 2017 Location: near Munich / Germany Posts: 486	Haven't got my both TF520 cards running, Diagrom starts to boot, but quits few seconds later.. have all resitors 4k7, will swap these out for 2k and see what's changed. Strange is that both cards behaves the same.. @Stephen Was thinking about to swap Cypres RAM on TF534 to Alliance, but decided not to do it, will continue testing new fw's as we need this info for Wiki & othe users Last edited by 8 Bit Dreams; 12 October 2018 at 19:37.

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12 October 2018, 19:46	#3709
alenppc Registered User Join Date: Apr 2012 Location: Canada Age: 44 Posts: 910	@8 Bit Dreams Since I have Alliance ram installed, I guess it makes sense to test both types, so you can keep the Cypress one (IMHO)

12 October 2018, 22:06	#3712
8 Bit Dreams Retro maniac Join Date: Feb 2017 Location: near Munich / Germany Posts: 486	@super_adam wow! That's intersting!!! On what system are You running it? A500 or A2000?

12 October 2018, 22:55	#3715
8 Bit Dreams Retro maniac Join Date: Feb 2017 Location: near Munich / Germany Posts: 486	Almost forgot. If it's NTSC Amiga - CIA timings will fail!

12 October 2018, 23:49	#3718
hooleydog Registered User Join Date: Aug 2017 Location: Southfield Posts: 53	WOW!! I've now got you talking about the T520 board.. Keep it up I say...

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