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Old 27 February 2019, 10:20   #21
trixster
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That’s a good question. I didn’t actually try removing the mediator busboard or logic board and the reason for that is I am unwilling to sacrifice my mediator setup just to swap a WE for a CSMK2. So whilst the mediator might have been the culprit, knowing so wouldn’t have helped me get the WE up and running in my A4000.

It’s a loose end but I’m happy enough having the WE in the 3000 and keeping the CSMK2 in the 4000. I might strip the 4000 down someday and try the WE again ... but tbh when it comes to Amigas I’m moving towards “if it isn’t broken don’t try and fix it”. A working mediator system is a fickle beast, sometimes you just have to leave it well alone
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Old 03 March 2019, 16:44   #22
eteP
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I was just wondering if there was a more general problem with the combination WE + Mediator as I also have this setup and don't seem to get any PCI cards working. However, I've tested my setup with an A3640 in the meantime but still no luck with the Mediator...
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Old 15 May 2020, 18:40   #23
trixster
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Thread revival. After a year this is now fixed

I tried the WE again in my 4000, this time with 3.1.4 roms as I wondered if makeshift 3.1 roms with the fpu fix were somehow the problem. This didn’t change anything. So I inspected the WE again - all pins on J2 open with the exception of the far left hand one “L”. The manual says L is Reserved and all indications on the internet say to leave it closed; indeed, with it closed as normal the board works fine in my 3000 and AA3000+

Anyway, this is not so with this 4000! Opening jumper L and hey-pesto it now works fine!

So, any ideas why this jumper affects my 4000? Some clash with the 64mb mod, or the mediator?
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Old 24 May 2020, 19:43   #24
trixster
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Update: not 100% fixed - only 50% of the ram is seen. This is a modded WE now with 2 slanted simm sockets to fit in a 3000. In the 4000 with L removed only one of the 32mb Simms is seen by the 4000, so only 32mb shows up
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Old 25 May 2020, 12:10   #25
Wrangler
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@trixster As you know, I have had a similar problem: Warp Engine in an A4000d (with a Mediator) that goes into an infinite yellow screen reboot cycle. This A4000d and WE are unmodded (except the WE has an 060 in it). The only solution I've found is your trick of removing the L jumper (despite this being RESERVED) and then it works fine.

I think you are losing half your WE mem because you have had alternate slots on the WE removed and the ram configuration isn't finding the second bank of 32 MB. I'm seeing all the 128MB on mine.

But I still don't know WHY the L jumper fixes the problem or why the problem of the yellow screen occurs at all.
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Old 25 May 2020, 20:31   #26
trixster
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Yep, agree with you on the simm mod!
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Old 25 May 2020, 22:19   #27
trixster
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Next update: using addmem E000000 FFFFFFF Pri 40 I can add in the ‘missing’ 32MB. So the autoconfig of the memory was missing the 2nd simm.
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