--- Pete Turnbull <pete_at_dunnington.u-net.com> wrote:
> On Apr 19, 5:58, Eric Smith wrote:
>
> > Usually a SASI host can deal with SCSI disk drives. Sometimes a SCSI
> > host can deal with SASI targets, as long as it restricts itself to the
> > SASI commands.
>
> Some old SCSI hosts can, but most modern ones expect to use messages.
I have an ancient driver for monochrome Macs that can be set to old
SCSI<->ST-506 bridges like the Adaptec 4000-series or even a couple of
SASI controllers.
I know I've seen one SASI<->ST-506 bridge - inside the Commodore PET
D9060/D9090 hard drives. There's a Tandon TM602S (or TM603S) inside
the box, a SASI interface to it, then a Commodore "DOS" board that
speaks SASI out one end, IEEE-488 out the other. One of these days,
I'll disassemble the ROMs on the D9060 and look for the part that
reads the 5Mb/7.5Mb jumper and sets up the drive parameters, then patch
in the right numbers for an ST-225 so I can continue to use the thing
after my last 5Mb mechanism dies.
-ethan
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Received on Mon Apr 19 1999 - 06:05:29 BST