Mediator 4000Di Help Please

[Motormouth]

I have a Mediator PCI 4000Di 3V MK-III Black Edition and have also been having similar issues that many of you are seeing.

The issues seems to be the 'bridgeboard" itself.  If I use the daughter board without the "bridge" all my zorro cards work.

With the bridge in and no card (zorro or pci) I can sometimes (oh 5% of the time) get the mediator to boot up.  when I put a radeon card in it can get it to boot 5% of the time with only 1-2% of the time were the radeon is recognized.

If I put my 128 meg ZorRam (uses 256 meg of zorro III space) with the bridge and no other cards (pci or zorro) 95% of the time I get a yellow screen, 5% of the time will it boot.

If I put in the zorram and a radeon card with the bridge (either configure with 512 meg space or not) I can get the amiga to boot 5% of the time with like 1% of the time were the radeon is recognized.

Busmastering has even been more of an issue.
Unfortunately I bought this to work with a crescendo 7200, and unfortunately have never seen it work in the A4000.  and yes the crescendo does work in my Mac 7200......:-(

For now I gave up and put the Prometheus back in the a4000 with a voodoo 3 and a ethernet card.

[Motormouth]

It might be worth sending it back to Elbox. I can confirm that a ZorRam card does work ok with a Mediator 4000Di III as I've managed to get my 256mb one working.

Have you tried a fresh installed of wb3.9 to try and rule out software incompatibility issues?

@trixster Both are excellent ideas.  
I tried a fresh installed of wb3.9 when I originally got it.  
I will contact Elbox directly.  I bought it through AmigaKit

[Motormouth]

Maybe refer to others with similar issues if you contact Elbox. I had confirmation they received my card, hopefully they get it fixed soon.

How did you contact Elbox?  When I attempted in the past to email their support they never replied, very frustrating.

I just email them again and I but this amiga.org thread in the email.......

[Motormouth]

They replied to my email.  They seem responsive now.   Let us see what happens.... hopefully I can finally get this busboard working...........

[Motormouth]

I've now come accross the 3rd A4000 with a Di in it with the same issue. The board works fine at a cold power up from the machine off but the moment you do a warm reset it will not see the Di at all. All three machines did this and the only fix was to turn off the 4000 and turn it back on to restart.

Never got a reply from Elbox about this. The first two people sold the Mediator, the 3rd is in the UK and he is just dealing with it now since it all works perfectly as long as he doesnt warm boot it.

After reseating the mediator and doing yet another fresh install,  I am having the exact same problem now.   works sometimes cold.  Remembering from my old layout days,  It reminds me about ground line interference or telegraph noise as the components warm up.  The design might need a tapeout, which unfortunate takes a long time.

[Motormouth]

Yes!!! It works now, also after a reboot!!! So, I can continue exprimenting with AOS4.1 first and then putting the Sonnet in.

This is great news!