SGI Indigo2 graphics options

Lyle Bickley lbickley at
Sun Mar 29 18:37:56 CDT 2015

On Sun, 29 Mar 2015 17:32:19 -0500
Jules Richardson <jules.richardson99 at> wrote:

> Amongst other things, I picked up a SGI Indigo2 system yesterday. It
> turned out that it had the original packaging, and that it's an
> Impact 10000 machine.
> For graphics however it has a four-board set; does anyone know what
> this might be? Wikipedia talks about a three-board set for the
> Maximum Impact, and fewer cards for lesser options, but I've not seen
> mention anywhere of a machine using four (unless they're just not
> counting the analog output board as part of the three?)
> I'm not sure what it has for RAM; all of the sockets are filled.
> Someone had scribbled 32MB and 1GB of disk on the box, but it has 2 x
> 4GB drives fitted, so that's not necessarily correct.
> I need to clean the dust out before I try powering up, but does
> anyone know what a minimum config would be? Can I power up with no
> disks and framebuffer, and expect to get a serial console? I'd like
> to not stress the PSU (or risk the framebuffer cards) initially if
> possible - the previous owner said they never ran it, although it was
> supposedly working when they got it.

Lots of Technical info on SGI systems here:

"SGI Advice and Technical Data"

This is a link to the North American mirror (which I host) of the
primary UK site.


Bickley Consulting West Inc.

"Black holes are where God is dividing by zero"

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