(Topic ID: 22234)

Andre Test ROM V2 in action


By firepawa

6 years ago



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  • 8 posts
  • 5 Pinsiders participating
  • Latest reply 5 years ago by HHaase
  • Topic is favorited by 9 Pinsiders

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#1 6 years ago

Hi,
I just posted a video of Andre's test ROM V2 running on my Flash System4 boards:


I just wanted to share the experience with all interested pin nerds around.
This ROM has more tests and is more precise in its diagnostics than the famous Leon's ROM.
It helped me debug the blanking signal: With Leon's test ROM the blanking signal didn't blink but the last test of Andre's ROM did make the blanking (and flipper relay) blink.

Very good debug tool for Williams System 3-7.

#2 6 years ago

I guess I was using a prior version, but I could never get it to work. Thanks for the posting the vid. Could you also post or link to the ROM image.
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#4 6 years ago

I think it's way easier to debug with the diagnostic LEDs tool instead of just counting the blinks. It is easy to build. It took me just a moment to construct it with 8 LEDs, 8 resistors, a connector case and 8 trifurcons. I used 100 Ohm resistors instead of 1k ohm (didn't have them) as specified in the doc but it is working good.

P1030352.JPG

#5 6 years ago

I will have to give that a closer look. I just finished 6 sets of Sys 3-7 boards and used Leon's test ROMS along with some of Hans Hasse's diagnostic tools.

Have a firepower MPU coming in a few days, will look forward to giving it a try!

9 months later
#6 5 years ago

I was going to give this a try on a Sys7 board I'm troubleshooting but I'm a bit confused by this in the document:

"Only for level 7 boards: Make the following jumper's W23 (typical setting W22), W12 (typical setting W11), W 9 (typical setting W10)."

Can some please explain what exactly these are getting jumped too?

Thanks

1 month later
#7 5 years ago

Digging this one up as I'm going through a really hard to diagnose board right now.

The jumper settings shown are done to change the IC17 to read from a 2716 chip instead of a 2532, and moves the ROM address for IC20.

I haven't had a chance to test it yet, but you could probably just double it up on a 2532 and leave the jumpers alone. Will report back in the future on this.

#8 5 years ago

Ok, I can confirm. You do NOT need to change the jumpers on a System 7 board to run this rom. You can simply double it up on a 2532, and it will run just fine.

Also, John is correct that you can use one of my LED bar boards on the display strobe header at 1J7 for this test as well.

-Hans

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