Date   : Mon, 11 Sep 2006 16:43:26 +0000
From   : Jules Richardson <julesrichardsonuk@...>
Subject: Re: Master AIV SCSI

Andrew Benham wrote:
>> On a general point about this particular SCSI interface, has anybody 
>> successfully connected up a SCSI device other than the LV-ROM player?

Never tried as I don't think the software side of it's there, but fuzzy memory 
says that the Master AIV SCSI interface is actually proper SCSI rather than SASI.

>> I would be interested in seeing how VFS accesses the SCSI interface, I
>> think if an amended version of ADFS could be made to look at the SCSI 
>> interface for devices instead of the 1MHz bus then it could open
>> up all sorts of possibilities.

That was the point where I gave up - I'd have no idea how to modify ADFS, and 
I believe all sorts of things were ripped out of the ROMs in the AIV setup in 
order to make room for VFS.

> It might well be that the VFS implements a more complete SCSI
> protocol (i.e. uses the ATN line), and we might be able to interface
> to more recent SCSI disks.

I'm reasonably confident that the VP-415 *is* proper SCSI, which in turn 
suggests that the VFS ROM does drive the /ATN line.

cheers

Jules