Re: [hatari-devel] HD drive & partition limits (was: ACSI hard drive emulation)

[Thomas Huth <th.huth@xxxxxx>]

Am Thu, 26 Jun 2014 20:17:37 +0300
schrieb Eero Tamminen <oak@xxxxxxxxxxxxxx>:

> Hi,
> 
> On torstai 26 kesäkuu 2014, Adam Klobukowski wrote:
> > > According to HD driver FAQ:
> > >         http://hddriver.seimet.de/en/faq.html
> > > 
> > > ST/STE HW limit is 1GB:
> > > "With the ACSI bus of the ST/STE mass storage devices with a
> > > capacity > 1 GiB can only be used with their full capacity with
> > > suitable host adapters or
> > > memory card adapters."
> > 
> > I hoped  Hatari already emulates those 'suitable' host adapters.
> 
> No.  Everything Hatari emulates is listed in the documentation:
> http://hg.tuxfamily.org/mercurialroot/hatari/hatari/raw-
> file/tip/doc/manual.html#Features

Actually Hatari supports the extended ACSI protocol for supporting disks
bigger than 1 GB, see commit d33662b5c5c1 (contributed by Markus Heiden
in 2011).

> If you're considering contributing emulation for host adapter(s)
> to Hatari, please go ahead! :-)

Well, you could also consider that there are real ACSI devices that
support this protocol extension - it's just that there never were such
devices. So the only disks that could be used with more than 1 GB were
SCSI disks with a special host adapter that implemented that protocol
extension to translate it to the SCSI protocol.

 Thomas