[Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

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[Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby dexter1 » Sun Oct 01, 2017 5:22 am

Location Nijmegen:

https://www.marktplaats.nl/a/computers- ... e=lr&pos=6

A 250MHz R4400 is not bad. And with an SI, which means it should have the latest Rev12 PROM.
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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby Irinikus » Sun Oct 01, 2017 5:57 am

That's Pretty cool!
Image...........................Image Image ImageImage Image Image Image Image
Image.............................Image Image Image Image Image Image Image Image
Image... Image AlphaStation 255/300MHz.
Image................Image 486 DX4 100MHz. (My first Computer)
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A snapshot of what I've got:.......................................................................:arrow:

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Mon Oct 09, 2017 4:46 am

Mine :)

Not that I needed another SGI, but for 50 bucks and a 10 minute drive I couldn't let it slip.
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby dexter1 » Wed Oct 11, 2017 1:34 pm

Congratz Jan-Jaap,
It has decent skins and feet. but also a horrible Barracuda.
I'm sure you have enough surplus disks so that you can replace it with a silent SCA drive with adapter.

The R4400@250MHz does not seem to have a CPU fan, so i'm wondering if its quieter than a R10K
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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Wed Oct 11, 2017 2:34 pm

Yeah those barracudas are dreadful.

The biggest problem right now seems to be that it has an empty Dallas so it's confused when powered up. Often the graphics are in a weird mode. I think I'll make a CR2032 mod, I should have an X-ray image of that type of Dallas.
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby gijoe77 » Fri Oct 13, 2017 12:33 am

jan-jaap wrote:think I'll make a CR2032 mod, I should have an X-ray image of that type of Dallas.


hey now what's this? Would you mind posting some pics of this if you actually do it? Would be interesting to know what this mod is all about

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Fri Oct 13, 2017 1:27 am

gijoe77 wrote:hey now what's this? Would you mind posting some pics of this if you actually do it? Would be interesting to know what this mod is all about

A couple of years ago someone put a bunch of Dallas chips lifted from various SGI systems in an xray machine for me. The result looks like this (I don't know right now which one we're looking at here):
xray.jpg

See, if you simply start grinding away at a Dallas, it'll look like this once you're finished (sorry Pentium):
what_a_mess.jpg

But if you know where the battery leads are, the procedure takes less time and the finished result looks better:
clean_mod.JPG


This Indigo2 is continuously complaining about kernel dates in the future, so it's Dallas battery is dead. It also seems to cycle through some weird screen modes during boot so either the Solid Impact card is shot or the configuration is scrambled. I'm not sure what's happening here; when starting X it momentarily switches to 72Hz and then when it goes back to 60Hz the brightness is way up and colors on screen look all washed out. It takes a 'setmon 1280x1024_60' from inside a desktop session to restore a normal picture on screen even though it's running at 1280x1024@60 already.

FWIW: the Indigo2 has a small EEPROM on the riser card on the back of the chassis where the keyboard, mouse and serial ports are. At the very least this contains the system MAC address, so the system ID is tied to the chassis, not the main board. And the MAC address remains valid when the Dallas battery dies, unlike in an Indy. I do not know which PROM variables are stored in the EEPROM and which are stored in the Dallas battery backed RAM.
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby Irinikus » Fri Oct 13, 2017 1:44 am

That's a really neat job!

I really wonder why they never produced Dallas chips with replaceable batteries? (pure commercialism I suppose)

Thanks for sharing, as we'll all have to carry out this mod someday.
Image...........................Image Image ImageImage Image Image Image Image
Image.............................Image Image Image Image Image Image Image Image
Image... Image AlphaStation 255/300MHz.
Image................Image 486 DX4 100MHz. (My first Computer)
Image.........................Image Image JavaStation-10(Krups); Sun Fire V880z.
A snapshot of what I've got:.......................................................................:arrow:

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Fri Oct 13, 2017 2:50 am

My biggest beef with the Dallas chips is that by the time the battery runs out they have EOL-ed the part and you cannot replace it. That, plus any replacement is just going to run out also.

If you design for a service life of 7 - 10 years, and don't want leaky batteries, the Dallas modules make sense. But I do not fit that target profile. I want a permanent fix, and CR2032 cells are not going anywhere anytime soon. The CR2032 socket I use is an SMD part so you can glue it to the top of the Dallas. I've also simply glued them to the IO4 PCB (where there wasn't enough tolerance on top of the Dallas) and on one of the ASICs on an Indigo mainboard. You can order them from Farnell.

Modified Indigo R3000 mainboard:
DSC_4328.JPG

Modified Indigo R4400 mainboard:
DSC_7794.JPG
DSC_7794.JPG (102.83 KiB) Viewed 515 times
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby Krokodil » Sat Oct 14, 2017 10:00 am

jan-jaap wrote:Yeah those barracudas are dreadful.


"...Ohhhhhh BarrrBarraBarraCuuuuuDAAA!"

Sorry couldn't help myself.
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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Wed Oct 25, 2017 1:17 pm

jan-jaap wrote:It also seems to cycle through some weird screen modes during boot so either the Solid Impact card is shot or the configuration is scrambled. I'm not sure what's happening here; when starting X it momentarily switches to 72Hz and then when it goes back to 60Hz the brightness is way up and colors on screen look all washed out. It takes a 'setmon 1280x1024_60' from inside a desktop session to restore a normal picture on screen even though it's running at 1280x1024@60 already.

I "fixed" this and it had nothing to do with the empty Dallas or the Solid Impact card.

It was the cable and/or the way it interacted with the screen.

The screen is a NEC LCD1990FXp which supports both SOG and conventional sync modes. I noticed that whenever the colors were correct, it was using SOG mode, and in separate sync mode it was producing the washed out picture on screen.

The cable is a genuine SGI 13W3 to VGA cable from either my Onyx2 or a Fuel or some other later generation system which supports DDC. Part# is 018-0881-002. The working cable is an older gray cable, SGI part# 018-0500-001. Probably wired for the traditional monitor ID pins used by older systems like the Indigo2. With this cable the monitor always selects SOG and all is good.

Learn something new every day ...
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Thu Oct 26, 2017 1:24 pm

Had intended to perform a CR2032 mod on the Dallas tonight but lost enough time looking for the battery holders it'll have to happen another day.

Coincidentally, the X-ray posted earlier in this thread is of a DS1286, the Dallas chip found in the Indigo2. But this one is pretty easy. Just look at the pinouts from the datasheet which described both the DS1284 (chip only) and DS1286 (module incl. battery and oscillator):
DS1284.gif

It's pretty obvious the battery is internally connected to pins 21 and 25 which are not present externally on the DS1286.

There's a complication, though: the Dallas is partially underneath the metal support of the GIO64 riser:
DSC_0273small.jpg

I will have to carefully place the battery holder on the Dallas in order to avoid short circuits. Something like this:
DSC_0277small.jpg


To be continued ...
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Mon Oct 30, 2017 2:38 pm

OK, surgery commences :)

I was a bit in a hurry and it was cold in my garage, so it's not my best job ever:
dallas1.jpg

I nearly took out one leg #21, and the exposed battery contacts are all but destroyed. Ah, well ;)

After establishing that the old battery was no longer connected to the exposed Vbat and GND pins, solder new wires to the pins:
dallas2.jpg

These soldering joints are fragile, so use some hot glue to stabilize the whole thing and seal the package:
dallas3.jpg

The mess on my desk:
dallas4.jpg

In the previous post I explained why the CR2032 battery holder cannot be centered on top of the Dallas, at least for the Indigo2. The wires exiting the Dallas package further limit my options, so I came up with this:
dallas5.jpg

dallas6.jpg


The finished product installed in the Indigo2:
dallas7.jpg


And, ... insert drum roll ... IT WORKS :mrgreen:

This Indigo2 is now fully restored to working order. Next up, I will clean up the skins a bit, install a more modern (less noisy) hard disk and perform a fresh installation.
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby jan-jaap » Wed Nov 01, 2017 5:00 pm

jan-jaap wrote:Next up, I will clean up the skins a bit, install a more modern (less noisy) hard disk

I'd say it cleaned up nicely. A few scratches on the feet remain -- the result of shoes. Doesn't matter much.
DSC_0460.JPG

DSC_0461.JPG

I replaced the disk with an 18GB IBM DDRS SCA disk.

I actually tore the whole machine apart and made pictures along the way. Enough to make an iFixit tutorial :mrgreen:
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To accentuate the special identity of the IRIS 4D/70, Silicon Graphics' designers selected a new color palette. The machine's coating blends dark grey, raspberry and beige colors into a pleasing harmony. (IRIS 4D/70 Superworkstation Technical Report)

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Re: [Not Mine] Indigo2 Impact R4400 on dutch marktplaats.nl

Unread postby Dodoid » Wed Nov 01, 2017 5:05 pm

Cool! iFixit has an Onyx teardown that I used when going to get my Onyx, you could consider posting the pics if you have the time.
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