040/060 adapter (The Matze version)

[cktwo]

Hi all,

I seemingly have bought the Fusion Forty including 68040->68060 adapter that is referred to in this thread (britlord sold it, so I am assuming it is the same card). However I can't get it working. I have installed the patched Kickstart ROM supplied with the card, including its Gary adapter and the ROM does indeed work (at least with my A2630, the computer boots perfectly well). However when I install the Fusion Forty the computer doesn't start. The power LED doesn't even switch from dark red to light red, let alone does the Fusion Forty splash screen appear. This is both the case if I try the card with its supplied 68040->68060 adapter (and its 80 MHz quartz) and if I try the card with a real 68040 and a 40 MHz quartz (I do not have a 50 MHz at hand). Of course I tried the on/off switch of the Fusion Forty which no big difference.

Any help anyone? What's wrong here?

Thanks in advance!
CKtwo

 

[Pghulme]

Are you using it in an a3000 or 4000 and is the patched rom a 3000/4000 rom?

 

[cktwo]

This is a Amiga 2000 card. So I use it in my Amiga 2000...

 

[Pghulme]

Lol ok
Same thing though, are you using an a2000 rom
Did you patch it or did you buy an eprom
What patched exec did you use

 

[cktwo]

The ROM was supplied by the seller and is supposed to contain a patch which the card needs to run. See earlier in this thread: Without the patch, the FPU detection fails / crashes in case a fully equipped MC68060 is used.

The card came with the "MC68060/75 MHz" processor which seems to be fake (I found this thread only after the purchase...). But as I stated, the card doesn't start up with a MC68040 either (at least not with the 40 MHz crystal I have, underclocking the card at 20 MHz).

Since the computer boots with this ROM using my A2630, I can analyze it. Is there anything specific I should look for?

As I said: The computer does NOT boot with the Fusion Forty (power LED doesn't change from dark to bright red). I doesn't boot either with its stock 68000 (power LED does go bright but nothing happens afterwards).

 

[SpeedGeek]

As I said: The computer does NOT boot with the Fusion Forty (power LED doesn't change from dark to bright red). I doesn't boot either with its stock 68000 (power LED does go bright but nothing happens afterwards).

The original exec 45.20b patch was intended to be used only with A1200, A3000 and A4000 so it won't work with "68000 Fall-Back" mode. Also, exec 45.20b is normally used with OS3.9 which requires a 68020 CPU minimum.

Since, there is a possibility that exec 45.20b could be used in a Kickstart 3.1 ROM and most A2000/A500 040 accelerators support the "68000 Fall-Back" mode the patch has recently been updated to support the 68000. You should contact Cosmos if you are interested in this updated patch.

 

[cktwo]

Okay, small update here. Tested the Fusion Forty "downgraded" to 68040 mit 50 MHz Crystal -> should run at 25 MHz. The Computer resets (dimmed power LED, bright power LED) but then the Screen remains black. I can execute another reset by C=/A/A (again: LED dimmed, bright) but nothing further happens. The CPU gets warm over time, so seemingly it's running.

As written before: The fully recapped / reworked A2000 itself runs perfectly well with a A2630 and so does the patched ROM. So I don't expect the cause of the problem to be there.

Any further ideas how I could progress?

 

[cktwo]

So, here's my final post in this thread. At the RETROpulsiv in Augsburg this weekend, some friends and I had a chance to closely examine the card. Here's the damage list:

- plug&go ROMs were broken. Swapped with those of another card, it worked.
- the MC68060 supplied with the card is fake (as already assumed). Even worse, it was not properly put into the 040->060 socket an one pin got squashed. Clearly the CPU is dead.
- the 040->060 adapter seems to be broken, too. At least voltage measurements let us believe this.
- the card works fine with a 68040/40 Mhz fitted in it's socket, but nowhere near to stable with the supplied 80 Mhz crystal (making the CPU run at 40 Mhz). We could get it to run at 60 Mhz though (68040 running at 30 Mhz). The card was sold with a 56 Mhz crystal at max, clocking the 040 at 27 Mhz.

With new plug&go ROMs and the 68040 it now runs fine. Since it didn't help me upgrade my A2000 to a 68060, I sold it to a friend who was looking for a 040 card.