Date   : Sun, 18 Jan 2004 11:25:00 +0100
From   : "Mark Usher" <mu.list@...>
Subject: Re: [Announce] BBC Hard Drive Package Update

Well the commands don't have anything to do with the interface. The
commands are passed by the interface between the devices. Commands 1B,
08 and 0A that are used by ADFS (I think that statement is correct),
OSBYTE &72, implements a standard SCSI command block to which any
command can be sent, not just 1B(Start/Stop Unit), 08(Read) & 0A(WritE).
You will find that are few more than that are used to dance with a disk,
such as 15(Mode Select), (4)Format etc. I have a program that currently
uses 00, 03, 04, 12, 15, 1C, 1D in addition to 1B, 08 & 0A.

Yes, there is the Winchester Service manual on the Doc project. I have a
lot of ACB 4000 docs too which I have not yet released - although they
are not of too much use as all that unit does is translate two MFM/RLL
hard drives to SCSI ID 0 / LUN 0 & 1. Also there is the HardDrive1-2.zip
file (also on TBL) which contains a home made interface, aswell as
several programs that show acessing the hard drive.

Seagate have a good SCSI command set document on their web site aswell
as some other documents for other interfaces - ATA, MFM etc.
http://www.seagate.com/support/disc/manuals/scsi/38479j.pdf

Be warned though that some of the commands/command subsets are vendor
specific.

-Mark



> -----Original Message-----
> From: Majordomo List Manager [mailto:majordomo@...] 
> On Behalf Of Richard Gellman
> Sent: Sunday, January 18, 2004 6:42 AM
> To: BBC Micro Mailing List
> Subject: Re: [BBC-Micro] [Announce] BBC Hard Drive Package Update
> 
> 
> The Acorn Winchester Service Manual - on The BBC Lives!.
> 
> See also any convenient SCSI Set 1 Command Set (you only need 
> commands 
> 1B, 08, and 0A).
> 
> -- Richard Gellman
> 
> Tom Walker wrote:
> 
> >Does anyone have any documentation for the hard drive
> >interface? If so, hard drive emulation might find its
> >way into B-em 0.7, due around spring (which should
> >also have the Windows speed/timing issues sorted).
> >
> >Tom
> >
> >_____________________________________________________________
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> 
> 
>