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Re: Larger memory option for VAXstations

On 2015-08-19 09:11, Johnny Billquist wrote:

But you like to keep all your old drives too, right?
So not knowing, what nemonix really did, they probably just plugged in a
second SCSI controller into the system with something like 53c875,
and wrote additional drivers to access it ...

Hmm. I don't think Nemonix required any changes to the system, so I
would be surprised by a new driver. That said, it might just work like
the standard SCSI controller, so the standard driver would work.
And wide/fast SCSI can still deal with old/slow drives on the bus, so I
don't think you actually need a second controller. That could be the
only one and you could be happy. But I'm just making guesses.

How do you make SCSI faster (5 vs 10MHz) without changing the chip?
(max speed on the 53c94 is 5MHz in sync or async mode)

Of course, we could do that in NetBSD, but I don't think we support a
single NVAX type machine yet...

4000/90 and up are supported, aren't they?

Yikes. My mistake. I even have NetBSD installed on my 4000/90. :-)

I know you do ;-)

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