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Re: rtVAX300 .. adding an CPU Type..
Gregg Levine wrote:
> On Fri, Jan 4, 2013 at 12:30 AM, Holm Tiffe <holm%freibergnet.de@localhost>
> > Dave McGuire wrote:
> >> On 01/03/2013 06:06 PM, Matt Thomas wrote:
> >> >> As some of you already know I'm fiddeling around with an ISA Board
> >> >> in a PC that has an rtVAX 300 CPU on it.
> >> >
> >> > The primary difference between the rtVAX and normal VAX is that the
> >> > rtVAX requires the process page table pointers (and, hence, page
> >> > table) to use physical address rather than system addresses.
> >> >
> >> > This means all the process page tables have to be physically
> >> > contiguous (as opposed to virtually contiguous). Given the rapid
> >> > fragmentation of physical memory, this makes new process creation
> >> > difficult since there will rarely be enough physically contiguous
> >> > memory available for the new process' page tables.
> >> Not the rtVAX-300. The -300 is a little module with a bog-standard
> >> CVAX chip, an SGEC, and some flash chips for a bootstrap on it.
> >> Here's one, socketed, on a 6U VME board:
> >> http://www.neurotica.com/misc/rtVAX-300-1.jpg
> >> http://www.neurotica.com/misc/rtVAX-300-2.jpg
> >> -Dave
> >> --
> >> Dave McGuire, AK4HZ
> >> New Kensington, PA
> > He Matt we already clarified this :-)
> > http://www.tiffe.de/robotron/VAX/rtVAX300-internal-1.jpg
> > http://www.tiffe.de/robotron/VAX/rtVAX300-internal-2.jpg
> > http://www.tiffe.de/robotron/VAX/rtVAX300-internal-3.jpg
> > ...the rtVAX has nothing todo with robotron at al..
> > Regards,
> > Holm
> > --
> > Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
> > Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583
> > www.tsht.de, info%tsht.de@localhost, Fax +49 3731 74200, Mobil: 0172 8790
> > 741
> What is three of? Your site tells me it is not at home.
Sorry, my fault. Corrected this with a symbolic link.
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583
www.tsht.de, info%tsht.de@localhost, Fax +49 3731 74200, Mobil: 0172 8790 741
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