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Posted by: fleeno
12-11-2018, 07:24 PM
Forum: Hardware/Triage/Repair
- Replies (1)

I've had an O2 with a Flat Panel Monitor Adapter Board running my 1600SW for a few years, but it seems the board has failed. I had no output from the O2 on the 1600SW, but it did have output on the built-in VGA port. I tried the board in another O2 with the same results.

I verified the 1600SW works by using it on an Octane with the multi-link adapter.

Does anyone know something I might check on the flat panel board, or should I just start looking for a new one?


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Posted by: jan-jaap
12-11-2018, 05:56 PM
Forum: Hardware/Triage/Repair
- Replies (14)

I'm trying to restore this ancient machine (a 4D/70 GT) to working order. When I got it, it wasn't functional. It may even have been used as a parts donor.

But I got past the obvious, like the malfunctioning power supply and broken fans. The machine will power up and POST:


I can boot it in single user mode to a login prompt on the graphics console. But when I try to boot to the standard NeWS or X11 login, I get a bus error on an address related to the GM1 board and the machine panics.

I tried swapping the IP4 CPU board and the GM1 board. No result. I do not have any other spare parts for this machine.

I pulled the GT graphics boards, and installed them in a PowerSeries. That is, all of them except the GM1 board, because a PowerSeries has a different backplane and requires a GM2 board. The result is a PowerSeries GTX. It works and doesn't suffer from pixel errors. It passes the Field diagnostics. So the GE4, RM1 and RV boards of the GT graphics card set should be good.

The Professional IRIS itself passes the 'ide' diagnostics, but those do not exercise the graphics. But I think the IP4 CPU board(s) should be good too.

This only leaves the GM1 Geometry Manager board.

I have a hard time believing I somehow have two GM1 boards broken in exactly the same way. I suspect an incompatibility between the system firmware revision and the GT graphics board set. There are four EPROM chips on the IP4 board: 070-0093-010, 070-0094-010, 070-0095-010 and 070-0096-010. The PROM version is:

Version 4D1-3.1 PROM IP4 OPT Thu Dec 8 16:12:10 PST 1988 SGI

This predates the GT graphics. I do not have the older 'G' graphics to confirm, and parts for this machine are not easily found (to put it mildly).

So, how to proceed? I can see a few options:
  • Someone has a Professional IRIS which works or used to work. We compare part numbers, and possibly eliminate my suspected incompatibility.
  • Someone has an IP4 CPU board with later firmware than mine. We dump it and I try again.
  • If someone knows someone who has one of these, please forward me their email address. There are very few people left who have one of these things.
  • I'm open to suggestions.


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Posted by: def13
12-11-2018, 08:50 AM
Forum: IRIX/Software
- Replies (1)

Each time I log in, the default gamma correction is set to 1.7 and everybody knows it's to hight for LCD displays.
To correct it I tape in the shell window : gamma 1.1 (as root) to obtain a darker display but a little more better to estimate light/contrast/colors (not heaven, but better).

But I don't find the way to lock the gamma value forever.

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Posted by: Raion
12-11-2018, 04:27 AM
Forum: Site Discussion
- Replies (2)

Happy 8th and Final Night to those of you who celebrate!

I'm pleased to announce our new IRIX Network homepage. The page provides a more pleasant experience for new users.

Users of older browsers are automatically redirected to the old version. I can add more browsers, just let me know what your browser version is and I can definitely add it. It's a balance.

The new design will be eventually phased across everything. Please report bugs, feedback directly to me.

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Posted by: indrema
12-10-2018, 10:05 PM
Forum: Hardware/Triage/Repair
- Replies (2)

there any possibility to install DCD adapter on a V10 octane? On the manual is specified must need a V12 but the two video board are similar, no one have try that?

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Posted by: BackPlaner
12-09-2018, 06:09 AM
Forum: SGI Discussion
- Replies (2)

Was searching for a replacement dock type software solution for SGI and discovered Iconbar, a neat little utility that hasn't been updated since 2006 but still works with IRIX, 12 years later. (make sure to get the tardist version)

[Image: DCtPM3I.jpg]

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Posted by: DeChief
12-07-2018, 05:34 AM
Forum: Beginners' Questions/Tips
- Replies (7)

Hey all,

I'm trying to install Irix 6.5.22 on my Indy R5000 using irixboot in Ubuntu (this fork:, and I'm running into the following error:

PC: 0x8801ad40 ep: 0xffffc7a8
EXC code: 128, 'Software detected SEGV'
Bad addr: 0x4000, cause: 0x8
[Press reset to restart the machine.]

Despite this, I can successfully run bootp():/disc1/stand/fx.ARCS from Command Monitor and launch fx to go through that part of the process. 

Indy specs:
256MB memory
SEAGATE HDD (don't know what size, but it's the first drive)
R5000 CPU

What's going on? Is this a hardware error? I've tried taking out half the ram but that only changed part of the error (what you see above is 128MB, 256MB replaces  the top line with "PC: 0x880c2708 ep: 0xffffc6b8").

I'm seriously stumped... after struggling for days to get irixboot/vagrant working correctly on a Windows 10 laptop, I finally dug out an older machine and installed Ubuntu, and successfully used fx.ARCS to partition the hard drive. I really thought everything was going to work this time  Sad  For reference, my setup is: Laptop -> network switch -> Indy.

Also I'm extremely new to all of this, so before you respond, think to yourself: "how would I explain this to a 5 year old?". Any and all help is greatly appreciated, thank you.

- Chief

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Posted by: Raion
12-06-2018, 02:58 AM
Forum: Site Discussion
- Replies (2)

For those who do not know, we do possess a Patreon, which allows users to donate to us:

I've always had reservations about asking for hand outs, so I have been figuring out creative ways to get the community involved

The first is t-shirts.

For now, we only have IRIX Network logo shirts, but we are working on some other designs:

These are high quality cotton tees available in the US and Canada. We get about $10/shirt, and these are available up to XXXL sizes. 

We're also looking into stickers, too, but for now, MERCHANDISING!
[Image: k4H460l.gif]

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Posted by: Raion
12-05-2018, 10:04 PM
Forum: SGI Discussion
- Replies (13)

On the IRC we have had a MAME dev working on Iris Indigo and Indy emulation. While a cycle exact replica in software is a long way off (it can't even boot to an installer or preinstalled disk) he has made progress according to him with getting it into a more usable state. 

There has been as of recent a lot of discussion about this on Reddit and in the Discord and I'd like to step up and say my piece, which can be summed up as:

Emulation of Silicon Graphics hardware is unlikely to revitalize our community any more than traditional efforts. As these are not video game computers, and the platforms being currently targeted are very old instances I do not see it as particularly useful now or in the near future as so much of the higher-end systems is undocumented and unlikely to be replicated in the near future. 

This is why I don't have emulation discussion categories. There's no point in sitting around talking about what is essentially vaporware until it brings something usable to the table. I'm not trying to tread on anybody's efforts I just have reservations and doubts. I don't think it'll bring useful people into the community and I think that emulation is not going to offer very much at the end of the day.

We currently operate on a walled garden model of sorts because you have to have relatively high investment in order to be part of the hobby, and this really keeps a lot of the more obnoxious and annoying people from sticking around. Having functional emulation will bring challenges and it won't be like suddenly we have a superior solution either. 

This is why I don't fund development of emulators I'm more interested in seeing our software transcend hardware in a more haiku type model. Don't get me wrong I love my hardware that I have spent a lot of money on, but IRIX as a free open source OS on modern hardware would do far more for the community than any emulation.

feel free to discuss below based on what I say or what you have to say on the matter I could be completely wrong and be proven wrong in the near future about this and I accept that. Regardless of how I personally feel about emulation once we have some sort of reference implementation that works to a functional degree I will probably end up adding emulation categories.

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Posted by: randomSGIfan
12-04-2018, 04:06 PM
Forum: Hardware/Triage/Repair
- Replies (5)

Hi there

I'm looking for some prom to repair few of my toys.
Can anyone point me to 
SGI VW320 and/or 540
SGI O2+ (R10K ready)

it would really help 

i already have few o2 with 4.9 to 4.18, two octane 1 & 2 (blue one)

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