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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Cyberus on February 03, 2004, 04:00:18 AM

Title: GVP SCSI Guru ROM
Post by: Cyberus on February 03, 2004, 04:00:18 AM

I thought 4.13, or 4.31 or whatever was the latest version. In fact, still available from gvp.
So what's this?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2783825954&category=8142 (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2783825954&category=8142)

Title: Re: GVP SCSI Guru ROM
Post by: voxel on February 03, 2004, 07:32:14 AM

It's Ralph Babel's OmniSCSI device in a rom adaptater for the GVP scsi controlers.

With that you can use HDs of more than 4 Gb capacity and you will not have any of the transfers problems the GVP controller had. :-)

I have the model for my A2091 and it's great!

Title: Re: GVP SCSI Guru ROM
Post by: Cyberus on February 03, 2004, 01:23:58 PM

Thanks for your reply.

So I can stick this in my old GVP A500 HD-8 Series II, and use HDs bigger than 4GB with KS1.3?
Does it improve transfer speeds?

Title: Re: GVP SCSI Guru ROM
Post by: voxel on February 06, 2004, 01:29:44 PM

Never tryied that, but I don't think so as only the gvpscsi.device is "upgraded", to handle over 4Gb drives you need a filsystem able to do it too, and wb1.3 is too old in my opinion.

But trying it would not cause any harm, you could just have a not working controler, reverting to the old rom would do it to work again in that case :-)

Title: Re: GVP SCSI Guru ROM
Post by: machinehead on February 08, 2004, 03:21:16 AM

Now that you mention GVP HD8+, I have to ask you a question.
Why is my GVP HD8+ giving errors such as"
"Unexpected Status $06 $07" ?
It is trashed I think, but maybe I am doing something wrong?

Title: Re: GVP SCSI Guru ROM
Post by: voxel on February 08, 2004, 11:13:19 AM

Hi machinehead :-)

>It is trashed I think, but maybe I am doing something wrong?

Not at all :-) it's one of the reason that makes we needed the Guru Rom upgrade, just another bug of the GVPSCSI.device ;-).

Title: Re: GVP SCSI Guru ROM
Post by: thebajaguy on August 29, 2018, 03:40:19 AM

Actually, gvpscsi.device v4.x forms the basis for GuruROM, with the latter supporting SCSI Sync on the 33C93A.  v3.x is the same as v4.x (for the A500/A2000 Zorro boards), but the earlier version level supports the buffered DMA Series I boards.  The 4.x series removed the old card support to make room for the newer CPU+SCSI+RAM products.  GuruROM makes use of the adapter as the driver code to support both controllers and Sync exceeds 16K, which is the available space provided for ROM on the A2091 and GVP Series II boards.

If Unexpected Status errors are coming up, SCSI termination is probably at fault (or a bad cable), and GuruROM will encounter the same thing, if not be worse due to speed.