28 Oct
2007
28 Oct
'07
9:16 p.m.
From: Jan-Benedict Glaw <jbglaw at lug-owl.de>
Subject: Re: An old dream come true: Iris Indigo!
Irix 5.4 is IIRC the last version running on the
Indigo. ... If memory
serves me correctly, there was also a Plan9 port at some time, but I
won't bet on it to still work
The Plan9 open source release omits the SGI IP22
stuff, sadly.
From: Richard <legalize at xmission.com>
Subject: Re: An old dream come true: Iris Indigo!
The Crimson and Octane are much later in the product
line than the
Indigo. The Indigo is after the Personal Iris but before the Indigo^2
or Indy.
The Crimson, technologically speaking, is contemporary to the R3k
Indigo. The Crimson used the same (slow) bus as 80s SGIs, but had their
top-end CPU in it. It was an upgrade path for existing SGI customers.
If I recall correctly, the only way to get an R4k CPU with the old IRIS
GL graphics boardsets. (VGX and friends.)
While the first-generation (R3k) Indigo was similar to the old PI
systems, the second-generation (R4k) Indigo guts were extraordinarily
similar to the Indy. Nothing in them is common to the R3k Indigo. I
expect they only used the old non-PS/2 keyboards to avoid confusion.
29 Oct
29 Oct
12:34 a.m.
On 28/10/2007 21:16, ajones wrote:
While the first-generation (R3k) Indigo was similar to
the old PI
systems, the second-generation (R4k) Indigo guts were extraordinarily
similar to the Indy. Nothing in them is common to the R3k Indigo. I
expect they only used the old non-PS/2 keyboards to avoid confusion.
Perhaps you're referring to the Indigo^2, but the R4K Indigo has most
things in common with the R3K Indigo. Same backplane, same skins, same
graphics boards and options. IIRC the little serial PROM is different.
The PSU is uprated slightly (though some R3Ks used the same PSU) but
otherwise the same. Obviously the CPU board is different, and the
memory on it is standard 72-pin FPM SIMMs instead of the proprietary
stuff used on the R3K. In that sense only is it like an Indy.
--
Pete Peter Turnbull
Network Manager
University of York
30 Oct
30 Oct
9:06 a.m.
On Mon, 29 Oct 2007 00:34:20 +0000
Pete Turnbull <pete at dunnington.plus.com> wrote:
Perhaps you're referring to the Indigo^2, but the
R4K Indigo has most
things in common with the R3K Indigo.
Only from the outside. The architecture of
the R3k Indigo CPU board is
a slightly modified Personal IRIS 4D3x. It uses the same proprietary
memory modules as the 4D3x and it even shares the same IP12 CPU
architecture denominator. The IP20 R4k Indigo CPU board in turn is a
completely different beast. It uses the same keyboard / mouse as the
R3k Indigo as well as GFX bus, but uses ordinary PS/2 SIMM memory. It is
much closer to the IP22 (Indigo2 R4k) and IP24 (Indy) then 4D3x (IP12).
A IP20 R4k Indigo can run IRIX up to 6.5.22 just like the Indigo2 and Indy.
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
9:34 a.m.
On 30/10/2007 09:06, Jochen Kunz wrote:
On Mon, 29 Oct 2007 00:34:20 +0000
Pete Turnbull <pete at dunnington.plus.com> wrote:
It also uses the same GIO bus as the R3K, different from the Indy's one.
My point is that the CPU is only one part, of several. To say that
makes the R4K Indigo like an Indy is like saying an R5K Indy is like an
O2 :-) It's a question of emphasis, I suppose.
--
Pete Peter Turnbull
Network Manager
University of York
Perhaps you're referring to the Indigo^2, but
the R4K Indigo has most
things in common with the R3K Indigo.
Only from the outside. The architecture of
the R3k Indigo CPU board is
a slightly modified Personal IRIS 4D3x. It uses the same proprietary
memory modules as the 4D3x and it even shares the same IP12 CPU
architecture denominator. The IP20 R4k Indigo CPU board in turn is a
completely different beast. It uses the same keyboard / mouse as the
R3k Indigo as well as GFX bus, but uses ordinary PS/2 SIMM memory. It is
much closer to the IP22 (Indigo2 R4k) and IP24 (Indy) then 4D3x (IP12).
A IP20 R4k Indigo can run IRIX up to 6.5.22 just like the Indigo2 and Indy.
31 Oct
31 Oct
9:24 a.m.
On Tue, 30 Oct 2007 09:34:28 +0000
Pete Turnbull <pete at dunnington.plus.com> wrote:
It also uses the same GIO bus as the R3K, different
from the Indy's
one.
Sure? I think once I munted a FDDI card from an Indy in a R3k Indigo.
The thought of a R3k driving 100 MBit/s appealed me. (I tried it with a
PI 4D35 before. But the VME FDDI card was broken.)
It's a question of emphasis, I suppose.
Or a
matter of taste. ;-)
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
5:20 p.m.
On 31/10/2007 09:24, Jochen Kunz wrote:
On Tue, 30 Oct 2007 09:34:28 +0000
Pete Turnbull <pete at dunnington.plus.com> wrote:
Yes, but some devices are back-compatible. I can't remember exactly the
differences (width is one) but I once had to know about it when I was
going to design a GIO interface. It never got very far because I found
an easier way to do what I wanted via another machine, but I do have a
pile of GIO designer's documents somewhere.
--
Pete Peter Turnbull
Network Manager
University of York
It also uses the same GIO bus as the R3K,
different from the Indy's
one.
Sure? I think once I munted a FDDI card from an Indy in a R3k Indigo.
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