eight bit controllers to look for:
Seagate ST-05X Xt to IDE
Seagate ST-11M MFM
Seagate ST-11R RLL
SMS/OMTI 5520 MFM
SMS/OMTI 5527 RLL
Western Digital WD XT140 IDE note: separate cables - 2 drives
Western Digital WD XT150R IDE note: 1 drive only
Western Digital WD XTGEN MFM
Western Digital WD XTGEN2 MFM best interleave I think -0 bigger capacity
Western Digital WD XTGENR RLL
Western Digital WD 1002-WX1 MFM slow interleave
Western Digital WD 1002-27X RLL slow interleave
Western Digital WD 1004-WX1 MFM better interleave bigger capacity
Western Digital WD 1004-27X RLL better interleave
Hope this helps.
Paxton
At 02:55 PM 12/13/2004, you wrote:
>the only sound physical reason for fractions is cooking... the general populace is so technically illiterate that is really doesn't make a difference whether things are in fractions or decimal. They really don't have a clue anyway. When was the last time you heard any clerk actually count change out or someone realize that 1/4 cup is 1/2 of a 1/2 cup...
But measuring by volume isn't necessarily the best method, either,
particularly for flours that vary in volume depending on how long
they've been sitting, the weather, or whether they've been sifted.
They teach fractions like that in third or fourth grade.
There's no excuse.
- John
P.S. Watch for me on the Food Network's "The Next Food Network Star" contest.
>From: "Paul Koning" <pkoning(a)equallogic.com>
---snip---
>
>Some of this discussion reminds me of the "arguments" why the metric
>system is inferior to the US system of measures.
Contrary to what Tom Jennings states in a later post, there
are sound physical reasons for using fractional systems
when dealing with the physical world. I'm not defending
the English system that is a hodgepodge of poorly
related measurement standards. The only reason we have
a decimal system is because of the number of fingers we
have. Hardly a sound reason to squeeze physical relations
into. One wonders why there are 2.5mm screws when the
decimal system works so well.
If we'd had 8 finger, things would have been so much
easier to work with. 8 is 2 cubed and one hand would
be 4 or 2 squared. These both fit nicely into the physical
world were squares cubes are most often worked with.
Even logs would have made more sense under a base 8 system.
>
>I don't actually know where 50 and 60 Hz came from, nor 100 and 115
>and 220 and 240 volts. There may be some ancient justification in the
>tinkerings of various 19th century engineers, but it seems to me it
>makes most sense simply to view them as random numbers.
I've been trying to find some actual history on the 50/60
thing on the net but so far, all I was able to find was
that cell phones are frying our brains. My understanding
was that it was a balance between efficient generation
and efficient transformers. The voltages were mainly to
control line loss. In the US, most people live close to
their distribution transformer and line loss is not that
high at 110-115V.
Dwight
>
> paul
>
>
On all of my replaced SCSI drives, I use SCA adaptors and SCA drives- much
easier to get nowadays than 50 pin models, and also newer. Any drive will
work-they do not need special firmware
The deal for SGI sleds is as follows-
The 50 pin cable goes into the 50 pin narrow SCSI socket on the adaptor- self
explanitory
The power cable will often need to be teased out a little longer (at least on
Indigo2, I don't have my Indigo sled at hand)
For the SCSI ID cable (the 6-pin bit) you will need a VOM/DMM. One side will
have a bank of 3 wires, the other will have 1 wire. On the adaptor, there will
be 3 pins wired together -> these are ground, connect to the single pin side.
The other wires set the SCSI ID based on which slot in the Indigo the drive
is installed
If you choose to hardwire the drive (not as neat, but a definite
possibility), remember that on IRISes the host adapter is ID 0, so the first (system) disk
is ID 1- and so on. Most computers have the host adapter as ID #7, but not
Siggys.
Best of luck to you, they are very neat machines, with a slick UI (Indigo
Magic)- For IRIX 5.3 be sure to get the free IDO (Development Option-compilers
and headers, available from www.sgi.com)
Scott Quinn
I seem to have spoken too quickly, put my foot in my mouth, and in the
process created a synthetic monster and slandered Even. I was unaware of what was
going on. Please consider this my apology.
>From: "Vintage Computer Festival" <vcf(a)siconic.com>
>
>On Wed, 15 Dec 2004, Michael Sokolov wrote:
>
>> Vintage Computer Festival <vcf(a)siconic.com> wrote:
>>
>> > Because there are three conductors sockets on the end plug and I don't
>> > know what is supposed to be on each one.
>>
>> Well, 20 VAC between the ends, don't know about the middle.
>
>Ok, that's good information, but for good measure it would be nice to know
>what the voltage is across the middle pin and either end pin.
>
>Thanks!
>
Hi Sellam
Do all the pins show low ohms to each other? It might
be a center tap or even just a ground lead that doesn't
carry current. Since you have the box open, you should be
able to see where all the wires go.
Dwight
Hi Bob
There used to be a place around here called Motion Industries.
I believe they changed there name but they were a nation wide
company and had branches across the nation. They carried
all the standard cogged belts and such. I'm sure they'd have
what you need.
They might still have the same name or something similar.
It has been a few years since I used them ( like about 10 or so ).
Dwight
>From: "Bob Shannon" <bshannon(a)tiac.net>
>
>Are parts available to repair a HP 2671G printer?
>
>I'd like to replace the geared belt that drives the print-head.
>I'm not at all sure that the head can be removed from this belt
>so I may be talking about a complete head and belt assembly
>which I'd assume is unobtainium.
>
>If its just a matter of attaching the head to a replacement
>belt, does anyone have the specs or a source for the belt?
>
>Apparently whatever these belts are made of gets old in a
>bad way, they become sticky and brittle, both are bad for
>drive belts.
>
>Given this, I'm assuming even a new-old stock drive belt would
>not be servicable.
>
Can anybody tell me if a "proper" (i.e. true IBM compatible) CGA (CGA, not
MDA, EGA or VGA) monitor had a male or female connector?
I know it had a DB-9 with approximately this pinout
1,2 Ground
3 Red
4 Green
5 Blue
6 Intensify
7 N/C
8 Hsync
9 Vsync
All signals are TTL and active high, as I remember.
Anybody in the SF Bay Area got a real CGA monitor that they don't want
anymore?
Thanks,
Bob Armstrong
Tom Jennings, do you have access to the manual on the SSM VB3 video board?
I'd love to get that scanned and into the archives.
Barry Watzman
Watzman(a)neo.rr.com
