I'd like to buy an onyx2 backplane, shipping will be to Seattle, WA.
Thanks!
Thanks!
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Hardware Wanted
WTB: Onyx2 backplane
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mia wrote:
I'd like to buy an onyx2 backplane, shipping will be to Seattle, WA.
Thanks!
Thanks!
Probably you want deskside, but gotta check. Deskside, CM or GM? I have a CM midplane.
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Damn the torpedoes, full speed ahead!
Systems available for remote access on request.
(single-CM)
Deskside yep. The one where the XIO cards connect to.
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I have Origin2k backplanes.. unfortunately not stored very well.
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<- MicroVAX 3500
<- DECsystem 5500
<- MicroVAX 3300
Pictures of my collection: www.pdp8.se
Would they work in an onyx2? I always wondered.
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mia wrote:
Would they work in an onyx2? I always wondered.
They'd work in a rack Onyx2 compute module. They have the XIO slots, but no graphics slots.
_________________
Damn the torpedoes, full speed ahead!
Systems available for remote access on request.
(single-CM)
Would they work in a deskside?
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I don't know for sure but I have always thought the compute modules were identical in rack and deskside configurations. However if you have an Onyx2 deskside that you want to fit it into, there might be some physical limitations. Compare with the wiki where we documented the tear down of the compute modules:
http://wiki.nekochan.net/wiki/Removing_O2K_Midplane
http://wiki.nekochan.net/wiki/Removing_O2K_Midplane
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<- MicroVAX 3500
<- DECsystem 5500
<- MicroVAX 3300
Pictures of my collection: www.pdp8.se
That does sounds like a full day of work, I would think those would be identical in size, anyone knows for sure?
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An Onyx2 tall rack uses compute module(s) identical to those of an Origin 2000, plus one or more graphics modules. The deskside Onyx2 has a different backplane.
The outer dimensions of both backplanes may be the same, but the number (and position) of XIO slots is not the same. You'd have to replace various bits of metalwork to install essentials like the IO6 / IO6G.
The outer dimensions of both backplanes may be the same, but the number (and position) of XIO slots is not the same. You'd have to replace various bits of metalwork to install essentials like the IO6 / IO6G.
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Now this is a deep dark secret, so everybody keep it quiet
It turns out that when reset, the WD33C93 defaults to a SCSI ID of 0, and it was simpler to leave it that way... -- Dave Olson, in comp.sys.sgi
Currently in commercial service:
(2x)
In the museum : almost every MIPS/IRIX system.
Wanted : GM1 board for Professional Series GT graphics (030-0076-003, 030-0076-004)
I see, so if I were to get a new metal cage and new motherboard, I would, in fact, have a O2k in an onyx2 "case", right? Of course I would have to get an IO6 as well. Do they share the same power supply?
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According to recondas, they are:
viewtopic.php?f=3&t=16726530#p7349648
viewtopic.php?f=3&t=16726530#p7349648
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<- MicroVAX 3500
<- DECsystem 5500
<- MicroVAX 3300
Pictures of my collection: www.pdp8.se
Yep, the Origin2000 deskside and Onyx2 use the same basic case and power supply. The backplane is different, as are the slot numbering bits and supports (the Onyx2 uses 2 nodeboards + graphics, Origin2000 uses 4 nodeboards and extra XIO). You can get a rack compute module and put it on your deskside base + skins, and that would probably be the easiest route.
You could also trade - generally Onyx2s are more valuable than an equivalent Origin2000.
You could also trade - generally Onyx2s are more valuable than an equivalent Origin2000.
_________________
Damn the torpedoes, full speed ahead!
Systems available for remote access on request.
(single-CM)
Doubt anyone wants to trade in the Seattle area; all those onyx2 were junked from Boeing, I don't think they had a whole lot of origin2k.
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whazurspec?
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Damn the torpedoes, full speed ahead!
Systems available for remote access on request.
(single-CM)