"Futuredomain" 8bit SCSI (??)
jwstephens at msm.umr.edu
Wed Apr 20 17:16:29 CDT 2005
Future Domain started out in Orange county in a small office at Edinger
Redhill in Santa Ana / Tustin. At least when I ran across them while I
in the SCSI / SASI business. Early on there were Future Domain, Alltech
various controllers with 53xx NCR controllers glued on them, and the
early 1542's. There was also a semiserious contender out in Pomona,
ADSI with an engineer whose name I forget that finally put out a small
of contollers and converters.
There was also a company called OMTI (One more time Inc), who was
eventually snarfed up by SMC, I think tha had some scsi to various
devices controllers. They also made a host adapter.
These were early, because at the time VLSI had not shot it's wad, and
I think they made these SCSI chips up on contract. VLSI also at the
time was making one of the follow on to Chip's and Technologies
AT support set, and were trying to do video adapters. C&T had a
huge lead for many months, and I think that VLSI was the first out
with a much cheaper alternative, with their 5 chip set.
Anyway, Future Domain eventually made a controller along the lines of
the Adaptec 1542, and eventually similar to the 2940.
The main thing about a controller like this is that the chip may do DMA,
but the main SCSI state machine software is contained and executed by
the main processor. This chip only runs the SCSI protocol from phase to
phase, with DMA in the betters ones. Cheaper ones used the AT's method
of doing programmed I/O and could only do interrupts of the AT to get
the main processor (286, 386, 486, and early non pci 586 or Pentiums).
This one probably has DMA, which means the I/O could run somewhat
faster, however Bus Mastering controllers usually have a processor
integrated in them.
the 1542 and the F. D. equivalent, and later the 2930 (future domains
last controller with an Adaptec badge on it) and the 2940's both have
processors to run the Scsi Initiator state machine, and do most of the
work once a crude program is downloaded into them.
This would have been long before Adaptec bough
Ethan Dicks wrote:
> On 4/20/05, Andrew Jones <aijones2 at bsu.edu> wrote:
> > http://www.weirdstuff.com/cgi-bin/item/14178
> > I've never heard of the store selling it, I've never heard of the
> > company manufacturing it, but there you have it. A new-old-stock
> > eight-bit ISA SCSI card.
> I've heard of Futuredomain, but do not have any of their products.
> I have _been_ to Wierd Stuff Warehouse; I even have a poster/calendar
> on my wall. The last thing I got from them was a complete boxed set
> of Interactive UNIX... several cubic feet of white boxes and binders.
> There are others on this list who have purchased _much_ more stuff
> from there than I have, but then I don't get to the Bay Area all that
> > Does anyone think this is on the level?
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