Search found 1552 matches

by robespierre
Fri Aug 04, 2017 12:14 am
Forum: HP/DEC/Compaq
Topic: What HP/DEC/Compaq do we have.
Replies: 122
Views: 8696

Re: What HP/DEC/Compaq do we have.

They are 512MB each, a set of 4 (a "memory option") is 2GB. You can verify this yourself by reading the part number of the SDRAM chips and converting Mbits to bytes. I just image searched so who knows how accurate the images are, but one result showed a DIMM with 18 Samsung K4S560432D-TC75...
by robespierre
Wed Aug 02, 2017 5:02 pm
Forum: Hardware For Sale/Trade
Topic: Millennium Leeds Liquid Crystal 3-D Viewer
Replies: 6
Views: 304

Re: Millennium Leeds Liquid Crystal 3-D Viewer

That patent is by a different company and contains no description whatsoever of the device pictured. A Google Scholar search reveals articles mentioning it published in 1987, so it was available in the early-to-mid-1980s, before CrystalEyes really got going. Obviously, if it is cited in a CrystalEye...
by robespierre
Mon Jul 31, 2017 5:23 pm
Forum: SGI: Hardware
Topic: VXA-2 DAT drive under Irix?
Replies: 4
Views: 131

Re: VXA-2 DAT drive under Irix?

by robespierre
Mon Jul 31, 2017 3:55 pm
Forum: SGI: Hardware
Topic: VXA-2 DAT drive under Irix?
Replies: 4
Views: 131

Re: VXA-2 DAT drive under Irix?

VXA is completely different from DAT. 8mm vs 4mm, the tapes aren't even the same size.
Many tape drives just work, but some require custom entries in /var/sysgen/master.d/scsi which is a tape drive database
by robespierre
Mon Jul 31, 2017 7:47 am
Forum: HP/DEC/Compaq
Topic: Alphastation 500 strange issue
Replies: 14
Views: 328

Re: Alphastation 500 strange issue

Some Alpha firmwares contain a MIPS emulator for running code in I/O cards from MIPS workstations; it's possible that the SRM firmware for this machine has MIPS emulation but the AlphaBIOS has 386 emulation.
Alphas never supported OpenBoot or OpenFirmware to my knowledge.
by robespierre
Sat Jul 29, 2017 6:43 am
Forum: Hardware For Sale/Trade
Topic: Millennium Leeds Liquid Crystal 3-D Viewer
Replies: 6
Views: 304

Re: Millennium Leeds Liquid Crystal 3-D Viewer

See the maker's address! It's no Vincent Black Shadow, but looks quite flexible, for those trying to do stereo gfx with unusual setups.
by robespierre
Wed Jul 26, 2017 2:22 pm
Forum: Hardware For Sale/Trade
Topic: [EBay] Octane dual 300mhz cpus? Not mine... Tempted if....
Replies: 4
Views: 229

Re: [EBay] Octane dual 300mhz cpus? Not mine... Tempted if....

Yes, that looks correct. ESSI (SSE) is the best MGRAS graphics option for Octane, if equipped with two TRAMs.
by robespierre
Tue Jul 25, 2017 2:13 pm
Forum: SGI: Hardware
Topic: SGI Octane graphics problem
Replies: 8
Views: 221

Re: SGI Octane graphics problem

All slots receive some cooling, but slot C gets the least. Any card in slot C forces "fastfan" mode, which is incredibly loud.
by robespierre
Tue Jul 25, 2017 12:32 pm
Forum: SGI: Hardware
Topic: Bent pins on Octane front plane
Replies: 9
Views: 201

Re: Bent pins on Octane front plane

I would write off the power supply too: look at those pins! Rarely do you see such severe arc damage. It looks like someone pulled the PSU while under full load.
by robespierre
Tue Jul 25, 2017 11:13 am
Forum: SGI: Hardware
Topic: Bent pins on Octane front plane
Replies: 9
Views: 201

Re: Bent pins on Octane front plane

Yes, it looks like a loss to me. Sorry :(
I suppose the connector could be surface mount, but generally it isn't used on large connectors because of cold-flow problems that can lead to misalignment. More likely it is just press-fit and doesn't protrude through the extremely thick circuit board.
by robespierre
Mon Jul 24, 2017 6:16 pm
Forum: SGI: Hardware
Topic: Bent pins on Octane front plane
Replies: 9
Views: 201

Re: Bent pins on Octane front plane

Hard to tell if the compression connector is damaged. Those fragile connectors are replaceable: they are a thin sandwich with dendrites on both sides, that are compressed between gold pads on the board side and the frontplane side. The dendrites are the delicate part, and should only be cleaned with...
by robespierre
Sun Jul 23, 2017 10:02 pm
Forum: IRIX and Software
Topic: Desktop video capture on O2?
Replies: 13
Views: 511

Re: Desktop video capture on O2?

I am up to here but now it just says "no match". dmrecord -B key -p screen,x=1600,y=1200,width=1600,height=1200,timing=ntsc -f [title=Softimage.mv] 1. You did not specify any output file. The title is not a filename. 2. You asked it to capture a region of the screen beginning at (1600,120...
by robespierre
Mon Jul 17, 2017 6:38 pm
Forum: Miscellaneous Operating Systems/Hardware
Topic: Who can identify this serial adapter?
Replies: 3
Views: 205

Re: Who can identify this serial adapter?

I can't see it being useful with a KVM; for every mouse you need a keyboard, too. The minidin-9 mouse port was only used with "bus mice" on PCs, but this adapter has a mac serial port. A strange combination. I suspect it was a port replicator dongle for an early PC laptop like the ones fro...
by robespierre
Sat Jul 15, 2017 8:55 pm
Forum: SGI: Hardware
Topic: Sgi Onyx terminator rack - 3 phase questions
Replies: 2
Views: 127

Re: Sgi Onyx terminator rack - 3 phase questions

The standard, accepted way to turn 1 phase power (either 120 or 240 volts) into 3 phase is with a rotary converter . In some cases VFDs made for machine tools can also be used, but there are a number of caveats to their operation. But the Onyx may not require 3 phase after all: DC power supplies are...
by robespierre
Tue Jul 11, 2017 6:00 pm
Forum: SGI: Hardware
Topic: Indigo 4000 power on till chime and dead
Replies: 9
Views: 480

Re: Indigo 4000 power on till chime and dead

Tried everything but just no luck until found a ceramic capacitor on the graphic card is cracked. May be not the reason but took it out. [image was posted lower down] No. There is a + mark on the silkscreen, and ceramic capacitors are never polarized. That was a tantalum capacitor that did auto da ...

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