I have an SGI 17E21 monitor. Unknown working condition, but if it's
possible to test it with a PC I'll do so. If it works I'll want $35 plus
shipping. Otherwise, it goes for recycling shortly.
Please reply direckly.
--
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
[ Old computing resources for business || Buy/Sell/Trade Vintage Computers ]
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Hi,
I wonder: nowadays most unices have their homedirectories in /home.
Minix however used to have its homedirectories in /usr. Did "real"
unices used to have the homedirectories their as well? Can someone tell
something about how that evolved? I'm probably to young to know (31).
Bert
I just ran into your posting on a forum from feb of last year. I do have the manuals you are looking for. With the default settings, you can just pop them into an ISA slot, boot the computer and they will appear as the last HD in your system (under Dos, I've never tried them under windows). format D: /s will make them a bootable drive.
I had 6 of them but only 2 are still functional - still using them in some old obsolete Emerald flat touchscreen operator interface systems. They seem to die with age. If you have any that are still alive I'd be interested $$.
If you are still interested, I'll send you a pfd copy of the manual - no charge.
I can go down and talk to them, but I will probably need to know how to wipe the disk- and I've never used anything older than a 4D SGI. Anybody know what the value of one of these things is? sometimes they want slightly absurd prices ($20 for a stripped 4D/20 Entry), and sometimes it is reasonable- need to know if it fits in the budget
John C. Ellingboe <john at guntersville.net> wrote:
> Postscript Language Tutorial
> and Cookbook AA-HL86A-TE
>
> Postscript Language Reference Manual AA-HL87A-TE
These two are about PostScript, not about DEC's specific implementation
thereof in the LPS40. They were written by Adobe and published by
Addison-Wesley, and are still readily available from places like Amazon
Marketplace. In fact I have just ordered my copy of PS LRM 1st ed. last
week and received it this week. (I have had the 2nd ed. all my life or
at least so it feels, since I've been using PS as my one and only true
page description language for longer than I can remember, but I wanted
to have the 1st ed. too for completeness - it's been a long time since
I've held it in my hands, and PostScript Level 1 brings back nostalgia.)
MS
>
>Subject: RE: State of the art
> From: Paul Koning <pkoning at equallogic.com>
> Date: Fri, 23 Sep 2005 10:17:12 -0400
> To: cctalk at classiccmp.org
>
>>>>>> "Henk" == Henk Gooijen <Gooijen> writes:
>
> Henk> ... and then there is a nice DSP on the modern soundcards.
> Henk> HAM radio amateurs use the soundcard DSP to decode those chirpy
> Henk> signals you can hear on short wave. Even signals burried in
> Henk> "noise" produce text on your screen. A good example is MixW,
> Henk> but there are several!
>
>Sure, but the sound card DSP tends to be a pretty low powered DSP.
>
>I think the typical signal processing in GigE or disk read channel
>applications starts with analog to digital conversion at close to a
>gigasample per second, and then doing DSP on the resulting data
>stream. Sound card DSPs are designed for data rates in the few dozen
>k samples per second.
>
> paul
Actually the sound card modes like WJST and PSK31 only need the sound card
to aquire the signal at audio baseband then the CPU does the heavy lifting.
There is also software defined radio, all modes (AM/FM/SSB/CW) where the
CPU after aquiring quadrature baseband does the decode work, the RF portion
of a reciever can be simple to the extreme but provide prformance and
features at the upper end.
Allison
KB1GMX
Taking money out of your Pay-Pal account, and not having a balance, will not
in any way stop Pay-Pal if they decide to "take" money from your account.
In order to have a Pay-Pal account, you must give Pay-Pal the right to take
money either from your credit card or your bank account (and usually you are
pressured to make both available). If there is a "chargeback", this gives
them the legal right -- enforceable in court if necessary -- to take that
money from you via either the credit card or the bank account, even if it's
months later and you no longer have a Pay-Pal balance. And, if the credit
card and checking accounts in question are closed, to collect it in the same
manner as any other alleged debt through a legal action.
That said, I have had problems with Pay-Pal transactions, and so have people
who I know (one whose entire account was "stolen" to the tune of thousands
of dollars), and, in the end, after some hassle and some time, it was all
resolved "satisfactorily".
I think Goldsnipper (on ebay and his ebay store) has an Apollo 600, sans
monitor and Kbd and a Tek 4114 in his whse at the moment. He has a high idea
of value but there is not that much available left. He is moving so a lot of
stuff is getting scrapped. His name is Findley. He used to be a secondary
market DG dealer. And maintained an IBM 438, which I think he still has. He
is located in Portland, OR, USA
I checked and he doesn't have any of the Data General Dasher 100 and 200
terminals left. He does have one D100 printer (the unusual "L" shaped one)
left. Not cheap and it will not get scrapped.
I have a bunch of Tektronix 4115 to 4128 circuit cards in my container but
no systems left.
I also have an Apollo 570T complete burried. It was running when put away.
No docs though.
--
Paxton Hoag
Astoria, OR
USA
>
>Subject: Re: State of the art
> From: woodelf <bfranchuk at jetnet.ab.ca>
> Date: Fri, 23 Sep 2005 17:17:59 -0600
> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Allison wrote:
>> Actually the sound card modes like WJST and PSK31 only need the sound card
>> to aquire the signal at audio baseband then the CPU does the heavy lifting.
>> There is also software defined radio, all modes (AM/FM/SSB/CW) where the
>> CPU after aquiring quadrature baseband does the decode work, the RF portion
>> of a reciever can be simple to the extreme but provide prformance and
>> features at the upper end.
>
>Call me a old fart but I still like Analog Radio and real music rather
>than digital this and that. I still think the BEST radio's are still
>ones built by hand rather than a mass market product like you see now
>days. While I don't deal in HAM radio I do see ShortWave Radio's now and
>then ranging from $49 to $100 with very few features that I consider
>now to be valuable. State of the Art to me is using the best knowlage
>and best use of components at the time rather than cheapest product as
>it now is. -- mass production of high speed low quality FET's -- is
>today's state of the art for all electronic devices built today.
>DSP is great for getting a signal out of noise like a space probe
>with a watt or two of power but just what is the front end of the
>reciver like? Playing with HI-fi audio I found negitive feedback
>is often mis-used. Non-linear components generate x**n harmonics
>that creates more noise because nobody considers this anymore.
>A valve diode I think is the lowest noise diode but who uses that.
>XTAL radio people have great front ends with a high Q but who uses that?
>All this aside ham radio still needs good people who know the
>equipment rather than some $$$$ product by microsoft-radio-95 so when
>ham people need to be called out for real work saving people with radio
>they can do it be it state of the art or a old transiver that they just
>happen to have kicking around with them at the time.
Then you'd like the 5 tube 75/80m RX I've built. Or maybe the 6m SSB
transceiver using analog phasing techniques.
However..
Thermionic diodes are noisy, much more so than silicon. Tubes at RF
cannot approach the noise figured that cheap transistors can. Though
a 3CX1000 amp is still cheaper than a transistor one and far more
tolerent of mishandling.
Crystal sets could not eliminate WGSM (740am) 3000W and 1 mile
away and allow me to hear WABC 770khz 40 miles away.
Non-linearity it's bad design for some things but useful where
efficientcy counts. Look at Class E trannsmitters and switchmode
power supplies for efficientcy.
I have a tranceiver for 6M/2M that uses IF dsp and it's frontend is
very sophisticated and hears as good as any. To beat that took me
a year using some very good analog technology and it's limited to
6M and needs a digital display for the analog VFO. Great radio BUT,
not significantly better than the commercial one save for a few narrow
things I only care about.
What you should check out is Softrock, uses the soundard and CPU
to do the back end stuff and it's frontend is a 29$ kit.
www.amqrp.org/kits/softrock40/index.html (it's sold out but the
details are there).
So whats this got to do with computers. Well as cpu cycles get cheaper,
DSP can do things that analog had to do but not as well. Things like
brick wall filters that don't ring and phase delays that are frequency
invarient are very hard to do with analog. Right now a sound card
and a leftover 30-400mhz PC is a pretty cheap way to do dsp but,
there are chips out there that coming in cheaper and only require
programming. The difference is the computer can also deliver the
user interface or as pilots call them the "glass cockpit" rather than
a box of knobs and dials.
Allison
