From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject: Re: Anti-Ada FUD (rant)
Date: Sat, 28 Sep 2013 17:54:12 -0400
Date: 2013-09-28T17:54:12-04:00 [thread overview]
Message-ID: <q6je49d9cuc338oqfd1nki4tb8207e1bft@4ax.com> (raw)
In-Reply-To: 53272638-d56f-460e-a10c-045c96a88de5@googlegroups.com
On Fri, 27 Sep 2013 23:21:19 -0700 (PDT), Shark8 <onewingedshark@gmail.com>
declaimed the following:
>You know, I've heard a lot of good stuff about VMS (and DEC's Ada compiler) -- kinda makes me wish I had first-hand experience with them. (And, obviously, the R-1000, that sounds like a *very* interesting
Be my guest:
http://www.designspark.com/blog/a-raspberry-pi-vax-cluster
Kind of scary to think something the size of a (double-pack) bridge
card set is emulating the "super-mini" of the 80s.
Granted, you aren't going to be plugging stuff into a q-bus
backplane...
My college ran a Sigma 6 with a whopping 1MB of RAM (double the factory
spec, somehow, using all four cabinets -- but with each cabinet holding
just one 256KB circuit board instead of the original magnetic cores. Needed
the four cabinets for the interface -- the Sigma used 4-bank, 4-port
/interleaved/ memory, allowing I/O processors to follow (or lead) the CPU
in simultaneous memory access. CPU could access address 3 [32-bit word] in
bank-4, while an I/O controller is at address 2 in bank-3, another I/O
controller at address 1 in bank-2, and the last I/O controller at address 4
in bank-1). But I digress: we used to run between 50 and 60 ACTIVE
terminals at peak times on that machine (the Gandalf terminal connection
gear was as large as the mainframe; it detected a "connect me" signal from
the terminals and linked them to available I/O ports on the mainframe). I
doubt a modern Windows box could handle 50 remote sessions with any degree
of reasonable response -- even with 1000X the RAM, and who knows how much
faster a processor (ignoring multi-core, yet).
--
Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/
prev parent reply other threads:[~2013-09-28 21:54 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-20 22:18 Anti-Ada FUD (rant) krfkeith
2013-09-20 22:47 ` Adam Beneschan
2013-09-20 23:32 ` John B. Matthews
2013-09-21 12:06 ` Georg Bauhaus
2013-09-22 0:47 ` gautier_niouzes
2013-09-22 21:24 ` Shark8
2013-09-23 4:43 ` Peter Brooks
2013-09-23 5:14 ` Nasser M. Abbasi
2013-09-23 6:05 ` Shark8
2013-09-23 23:19 ` Nasser M. Abbasi
2013-09-24 7:10 ` Bill Richards
2013-09-23 7:00 ` Bill Richards
2013-09-23 7:55 ` Bill Findlay
2013-09-23 8:31 ` Peter Brooks
2013-09-23 8:37 ` Bill Richards
2013-09-23 8:52 ` Bill Findlay
2013-09-23 8:59 ` Georg Bauhaus
2013-09-23 11:31 ` Bill Richards
2013-09-29 1:04 ` Shmuel Metz
2013-09-24 1:40 ` Paul Rubin
2013-09-24 7:05 ` Bill Richards
2013-09-24 7:34 ` Bill Findlay
2013-09-24 7:49 ` Bill Richards
2013-09-24 10:47 ` Georg Bauhaus
2013-09-24 10:38 ` Georg Bauhaus
2013-09-24 15:39 ` Paul Rubin
2013-09-28 23:28 ` Shmuel Metz
2013-09-23 5:55 ` Shark8
2013-09-23 6:12 ` Peter Brooks
2013-09-23 7:34 ` Dmitry A. Kazakov
2013-09-23 8:36 ` Peter Brooks
2013-09-23 9:36 ` Dmitry A. Kazakov
2013-09-23 9:39 ` Bill Findlay
2013-09-23 12:16 ` Peter Brooks
2013-09-23 12:54 ` Bill Findlay
2013-09-23 14:32 ` Peter Brooks
2013-09-23 22:06 ` Peter C. Chapin
2013-09-29 1:00 ` Shmuel Metz
2013-09-23 7:26 ` Peter Brooks
2013-09-24 6:03 ` Shark8
2013-09-24 7:51 ` Peter Brooks
2013-09-26 20:58 ` erlo
2013-09-24 6:38 ` krfkeith
2013-09-24 23:18 ` Dennis Lee Bieber
2013-09-28 6:21 ` Shark8
2013-09-28 14:40 ` Per Sandberg
2013-09-28 21:54 ` Dennis Lee Bieber [this message]
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