30 Jun
2005
30 Jun
'05
12:45 p.m.
On Thu, 2005-06-30 at 12:14 -0700, Lyle Bickley wrote:
It's been a while since I used the controller, but
IIRC it was an old ISA
controller card like a WD7000 or Seagate ST-01/ST-02. Any early SCSI-1
controller should do - that was before SCSI became "smart" - and the
messaging between the controller and the device (HDD) was minimal. A SASI
device on such a controller will respond "well enough" to "look like"
SCSI-1.
As I said before - DO NOT mix a SASI device with a SCSI device on the same
controller - or strange things can happen (don't ask).
Yep - far as I remember, SASI's single target only, so I expect if you
have a SASI target on the same bus as a SCSI target all sorts of things
would happen! :-)
Most classic SASI controllers seem to be little more than a handful of
buffer and latch ICs though (only about 6 chips total) - hence I was
wondering if someone had chucked together something to hang off a PC
parallel port (and just drive it all in software). Not especially
complex - my worry would be that the SASI target would timeout on
certain ops if the PC parallel port isn't quick enough though.
cheers
Jules