>I would love to get rid of my future domain 1680 card since I now have
>a more capable bus. I have read various horror stories, but not much
>substance about NCR based scsi controllers.
>First, since my motherboard has no socket for a NCR chip,
Of course not - the NCR53c8xx series only come in surface mount
Quote:>I need a whole
>card including BIOS (so scsi disk will work with DOS).
Not necessarily. Many PCI systems include the NCR SDMS BIOS code
in the system BIOS, although they don't include the chip. It would
be worthwhile doing a
strings /dev/mem | grep -i ncr
to see what your memory looks like.
Quote:>Who makes such beasts?
If you need one with a BIOS chip, Nextor's model 93 is the only one I'm
aware of, unless you want to go with an 825 based board (FAST+WIDE,
requires two minor patches to make it work under Linux).
If not, ASUS, Intel, Portland, and many others make non-BIOS
Quote:>Second, the ASUS card is $100. That is cheaper than many cheapo ISA
Actually, you can find non-BIOS versions of the boards for about
$70. Given the fact that many BIOS vendors (ie, Intel) who lacked
NCR SDMS support for their boards have upgraded their newer ROM
images to included it, this _might_ be the way to go (some of
the ROM vendors can't seem to get their act together,
and alternate between working and broken releases). Also, any
problems caused by flakey protected mode PCI BIOSes should be
fixed if you upgrade.
The Nextor boards tend to run about $140ish.
Quote:>Does this mean it is programmed IO?
Nope, they're busmastering. Architecturally, they're similar
to the Adaptec AIC-7770/7870 chips used on the 2xxx series, except they
execute more complicated instructions from main memory rather than
simpler ones from on-chip RAM, context switch in software rather than
hardware, and have other minor differences.
Quote:>As of now, adaptec isn't an option for me because of their nondisclosure
Note that Adaptec doesn't have an NDA requirement on the hardware
docs as is generally believed, although there is one on the
downloadable firmware's interface.
However, some of their tech support staff will lie to you about that fact and
refuse to forward your calls to some one who knows what's going on.
IMHO, that's still plenty of reason to avoid Adaptec.
Quote:>Buslogic is an option, but they are expensive, and I want to see
>if they are worth three times the NCR price.
The Linux Buslogic drivers are a bit more mature. If you want top
performance from _multiple_ devices accessed at the same time
under Linux, right now instead of whenever I get arround to it (I need to
finish debugging the new save/restore pointers code so the right
values get restored after a SCSI context switch) you'll be happier with
the Buslogic boards.
People've had a lot of problems with the NCR boards, the
vast majority of which break down into general PCI configuration/bug
things. I've seen the same sorts of reports in large numbers with
the Buslogic boards as well - you'll have it if you have broken
PCI devices or a broken mainboard no matter what you use.
Since our leaders won't respect The Constitution, the highest law of our
country, you can't expect them to obey lesser laws of any country.
Boycott the United States until this changes.