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Old 28 January 2016, 23:14   #1
Viserion
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Amiga 2000 HD contoller

When I bought my A2000 there was a HD controller that was basicly there for the HDD to be attached to.

Nothing was connected to the controller itself.

I tired searching for it, but come up with nothing, so out of curiosity I ask if anyone here knows more.

I tried to put it in again a few days ago, but the A2000 refused to boot up with it connected.

There is one place where someone has tried to repair it.

It does say "Harddisk for Amiga 2000 by R.K. 1'89 LS" on the back of the card.

Never seen that sort of connectors before, but as one chip is label Omni scsi, it's a scsi controller of some sort.

It may be an ISA card that has been converted to a Zorro card?

Anyway I have taken a few pictures , that I hope will help finding more about this card.
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Old 28 January 2016, 23:21   #2
SkulleateR
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looks like a xt controller card for a mfm harddisk .....
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Old 29 January 2016, 00:23   #3
Franchute13
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similar to:
http://www.bigbookofamigahardware.co...t.aspx?id=1876
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Old 29 January 2016, 12:46   #4
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There are many variations of this, none of them are recommended for anything. :-)

More info:
http://amiga.resource.cx/search.pl?product=omti
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Old 29 January 2016, 16:01   #5
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It's not a SCSI controller unfortunately. To get it working you'd need to find the correct software, and install a compatible MFM/RLL hard disk. That's probably not worth doing other than for historical interest.

When you fitted it to your A2000 with no HD connected, did the boot process just hang, or did it continue eventually (to boot from floppy, i.e. insert disk screen appears) after a few minutes?

WinUAE emulates several similar controllers, and for historical interest it would be good if you could dump the boot ROM of your one. To get to the chips you'd probably need to remove the OMTI board. From the pics it looks like you'd remove the two nuts & bolts at the top and slide the OMTI card out of its connector. Maybe the ROMs are underneath it?
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Old 29 January 2016, 16:42   #6
Viserion
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Looks like mine is a variant of the one pictured in bigbookofamigahardware.com. Some of the chips are in different places, facing a different way, but main design looks the same.

When I got it, a 50 pin SCSI hard drive was fastened to the card, as the other places where occupied by other hardware. The SCSI disk was connected to a GVP g-force card.

So the card didn't do anything, except act as a HDD holder.

When trying it again, I got a black screen.
I let it stay on for 10 minutes or so, and nothing happened.

I removed the OMTI board, but there was no ROM underneath there.

I was of the opinion that the PAL16L8ACN was the ROM.

But I don't know too much about these things, so I might be wrong.

If this is the ROM, I'm not certain on how to read an save it, or if I have the equipment that can read them.
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Old 29 January 2016, 21:13   #7
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If there are no EPROMs on the card then it wouldn't be capable of auto-booting. Strange that you get a blank screen given that. If the PAL chip is the only one on the Amiga-side card (from looking at the pics again, it seems the Amiga-side board is very small?) maybe it's gone bad???
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Old 29 January 2016, 21:25   #8
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Yup, these controllers have no autoboot function but hey, they work fine with Wb 1.3

In one of my A2000 thereĀ“s one of those old MFM Controllers with an Zorro II Autoboot card ... works solid as a rock since years
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Old 29 January 2016, 21:26   #9
Viserion
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It could be it has gone bad. It looks to be in good nick.

You can see how wide it is in one of the pictures, under the cables.

It's only the IC, capacitor, and connector on the PCB. Not much to go wrong.

I think the area near the 2 connector is more likeley, as some one has done some work there.
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Old 29 January 2016, 21:42   #10
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If you really want to use the card/bracket to hold a SCSI hard drive in future (as was previously done) you could maybe try removing the PAL chip from the board and see if that cures the hang-at-boot problem.
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Old 30 January 2016, 14:36   #11
Viserion
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I have managed to find a GVP card as a replacement, it has the added bonus of adding 8mb ram

I was curious as to what it was, as I had previously never seen those contacts before.
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