5 Nov
2010
5 Nov
'10
5:43 p.m.
Chuck Guzis wrote:
On 5 Nov 2010 at 17:05, Ethan Dicks wrote:
Yes, I *think* the OMTI was pretty basic, but was at least more-or-less SCSI.
I think the Xebec boards were SASI, and don't even work at the low level
against a modern SCSI board.
Since I moved from PETs and C-64s and small DEC
machines first to
Amigas and Macs, then much later to PCs, I was very happy when
embedded SCSI drives displaced all the Adaptec and Emulex and Xebec
and Omti boards - much easier to set up and move from environment to
environment.
Years ago, I worked out an MFM-RLL-to-SCSI-to-ACSI adapter for the
Atari 520 ST. Worked pretty well, but the command set for the OMTI
was pretty sparse. I seem to recall that there was no IDENTIFY
command and that for a host to obtain the drive geometry (not
capacity, but CHS) it had to be read from the OMTI adapter's buffer
right after bootup. I've got the documentation for the adapter
somewhere.
Yes, me too. I think I have ones for various board (disk and tape) from
Adaptec, Xebec, OMTI and Emulex, too. ISTR the Xebec docs come with a nice
little suggested Z80 interface schematic in the back of the manual - those
were the days :-)
cheers
Jules