7 Jul
2006
7 Jul
'06
4:06 a.m.
Don Y wrote:
Hi,
I'm just finishing up some ideas on a quick-and-dirty
parallel port (SPP)-to-OMTI interface (so Jules can
salvage his "bits" :> ). Anyone like to add their
two cents?
Don,
Thought for the morning - it'd be nice if the hardware was switchable between
SCSI and SASI. In a moment I'll dig out the docs I have for the Omti 5x00,
Adaptec ACB4000, Xebec (umm, 1452 or something like that) and the Emulex boards.
Some of those boards are SASI, some are SCSI (although I think all are
pre-CCS, but that's a software issue). What needs to be understood is whether
the extra handshake lines needed for SCSI can be included - and if so can they
be 'switched off' via either hardware or software to drive a SASI device...
(from memory, the OMTI is the closest board to 'real' SCSI, so designing
against that's likely a good thing)
Note that I am not aiming for performance. Just
a way to coax bits off a disk drive so they can
be imaged properly (is that correct, Jules?)
Yep, doesn't matter if it takes a while to run or chews CPU cycles to do so -
it's purely a way of imaging / restoring disks, not a way of interacting with
them (that can be done via the loopback device in Linux once you have an image!)
cheers
Jules