On 17/03/2023 16:34, Paul Koning via cctalk wrote:
This goes by way of what RT11 originally called a "fork queue" but was told to rename to
"fork list" :-)
The story was that Dave Cutler had a T-shirt made with "fork queue" on
it, but I don't know if that's actually true.
Antonio
--
Anto
> On Mar 17, 2023, at 11:22 AM, Chuck Guzis wrote:
>
> Anent the Smotherman paper. Woefully incomplete and inaccurate, but
> perhaps a starting point.
>
> https://people.computing.clemson.edu/~mark/interrupts.html
On interrupt coalescing (mentioned under "performance techniques"), an early
> On Mar 17, 2023, at 12:24 PM, Lars Brinkhoff wrote:
>
> Paul Koning wrote:
>> I noticed the section on deferred interrupts, which mentions Cutler
>> and "fork" on RSX. It doesn't mention the similar mechanism, also
>> called fork, in RT-11.
>
> And, pray tell, what do these "fork" mean?
>
Paul Koning wrote:
> I noticed the section on deferred interrupts, which mentions Cutler
> and "fork" on RSX. It doesn't mention the similar mechanism, also
> called fork, in RT-11.
And, pray tell, what do these "fork" mean?
I'm curious since Unix has fork as a verb, whereas Tenex has it as a
no
On Thu, Mar 16, 2023 at 9:38 PM Ethan Dicks via cctalk
wrote:
>
> We had an Amdahl in the middle of a multi-thousand-square-foot
> computer room (one of several) at work 25 years ago.
Heh, of the limited number of big Mainframe data centers I got to
visit, every one had one big red Amdahl box amo
> On Mar 17, 2023, at 11:22 AM, Chuck Guzis wrote:
>
> Anent the Smotherman paper. Woefully incomplete and inaccurate, but
> perhaps a starting point.
>
> https://people.computing.clemson.edu/~mark/interrupts.html
I noticed the section on deferred interrupts, which mentions Cutler and "fork
Anent the Smotherman paper. Woefully incomplete and inaccurate, but
perhaps a starting point.
https://people.computing.clemson.edu/~mark/interrupts.html
For example, he cites the CDC CYBER 200 as 1981. Nope--CYBER was
mostly a relabeling effort. For example, the 6600 became CYBER 74, the
76
On 3/17/23 06:25, Paul Koning wrote:
>
> I'm still trying to get a good answer to "when did the first commercial (as
> opposed to one-off lab) computer appear that had interrupts as a standard
> feature?"
>
> It looks like there was the IBM 704, in 1958, with interrupts but some
> documentati
> On Mar 16, 2023, at 10:14 PM, Chuck Guzis via cctalk
> wrote:
>
> On 3/15/23 17:23, Jon Elson via cctalk wrote:
>
>> Yes, the IBM 709x ran in single-job fashion. I don't think it had
>> interrupts, so breaking off one program to schedule another was not
>> possible. Also, it had no memor
On 2023-03-16 8:38 p.m., Ethan Dicks via cctalk wrote:
On Thu, Mar 9, 2023 at 5:05 PM Cameron Kaiser via cctalk
wrote:
This has been around the block:
You can lose a screw in a micro.
You can lose a screwdriver in a mini.
You can get lost in a mainframe.
We had an Amdahl in the middle of a m
On Thu, Mar 9, 2023 at 5:05 PM Cameron Kaiser via cctalk
wrote:
> This has been around the block:
>
> You can lose a screw in a micro.
> You can lose a screwdriver in a mini.
> You can get lost in a mainframe.
We had an Amdahl in the middle of a multi-thousand-square-foot
computer room (one of se
On 3/15/23 17:23, Jon Elson via cctalk wrote:
> Yes, the IBM 709x ran in single-job fashion. I don't think it had
> interrupts, so breaking off one program to schedule another was not
> possible. Also, it had no memory protection. We had a 7094 at
> Washington University in the late 1960s, and
>I remember when the internet and e-mail became all the rage in the late 1990s,
>everything was eThis and eThat. And when Apple coined the iPhone, everything
>started to become iThis and iThat.
The "i" thing predated apple's use of it and certainly predated the iphone.
Internet services o
The 709x had data channels which ran asynchronously, and generated channel
traps — i.e. interrupts. I don’t think it had a, say, 60Hz clock, but I/O
interrupts would allow a certain basic level of multiprogramming. The IBM 1410
also had I/O interrupts, and even had a rudimentary optional telep
> On 3/15/23 18:32, Paul Koning via cctalk wrote:
>
> Apart from spooling, which uncouples slow I/O from execution, there is
> also "multiprogramming", which means being able to run more than one
> job concurrently. Timesharing does that, of course, but I think
> multiprogramming was intended to r
On 3/15/23 18:32, Paul Koning via cctalk wrote:
Apart from spooling, which uncouples slow I/O from execution, there is also
"multiprogramming", which means being able to run more than one job
concurrently. Timesharing does that, of course, but I think multiprogramming was
intended to refer t
On Mar 15, 2023, at 3:55 PM, Rich Alderson via cctalk
wrote:
>
> The term "minicomputer" was marketing speak: The first computer to receive
> the
> appellation was the PDP-8/e, which was the third generation of the PDP-8
> family
> (where the PDP-5 is "generation zero"). The first generation
On Wed, Mar 15, 2023 at 4:11 PM Rich Alderson via cctalk <
cctalk@classiccmp.org> wrote:
> The term "minicomputer" was marketing speak: The first computer to
> receive the
> appellation was the PDP-8/e, which was the third generation of the PDP-8
> family
> (where the PDP-5 is "generation zero").
> On Mar 15, 2023, at 6:55 PM, Rich Alderson via cctalk
> wrote:
>
> ...
>> (another notion is that mainframes are "multi-user" -- most early
>> microcomputers were not multi-user, as they just barely supported the needs
>> of one user; I'm not sure if the very first minicomputers were multi
Jumping in late because the list blew up so badly on this topic. Yes, others
have already commented on these things, but I'll add my US$0.02 worth anyway.
> Date: Thu, 9 Mar 2023 16:00:05 -0600
> From: Steve Lewis via cctalk
> Actually, to answer my own question: if "main frame" refers to the
Still catching up.
> Date: Fri, 10 Mar 2023 06:39:16 +
> From: Lars Brinkhoff via cctalk
> I believe the term minicomputer was first applied to the PDP-8. It was kind
> of retroactively applied going back to the PDP-1. Whether the PDP-10 is a
> mini is sometimes hotly debated. IBM people
> On Mar 11, 2023, at 5:34 PM, Chuck Guzis wrote:
>
> On 3/11/23 13:28, Paul Koning wrote:
>
>>
>> Dijkstra said as much when he evaluated the 1620 for possible use by the TU
>> Eindhoven -- a big problem is that it was unable to handle arbitrary 8-bit
>> data.
>
> Oh heck, there's no way
> On Mar 12, 2023, at 3:01 AM, Chuck Guzis via cctalk
> wrote:
>
> On 3/11/23 14:34, Chuck Guzis via cctalk wrote:
>> On 3/11/23 13:28, Paul Koning wrote:
>>
>>>
>>> Dijkstra said as much when he evaluated the 1620 for possible use by the TU
>>> Eindhoven -- a big problem is that it was un
On 3/11/23 14:34, Chuck Guzis via cctalk wrote:
> On 3/11/23 13:28, Paul Koning wrote:
>
>>
>> Dijkstra said as much when he evaluated the 1620 for possible use by the TU
>> Eindhoven -- a big problem is that it was unable to handle arbitrary 8-bit
>> data.
>
Perhaps I need to elaborate on my
On 3/11/23 14:30, W2HX via cctalk wrote:
> Yes I can concur with this. I operate some Navy transmitters (at home)
and while on the vessel they used 3 phase power supplies which were
physically smaller and produced less ripple. At home, I use a 1 phase
power supply just fine. These were 1KW output (
On 3/11/23 13:28, Paul Koning wrote:
>
> Dijkstra said as much when he evaluated the 1620 for possible use by the TU
> Eindhoven -- a big problem is that it was unable to handle arbitrary 8-bit
> data.
Oh heck, there's no way to test for a numeric blank. Compare works only
for numeric data.
Yes I can concur with this. I operate some Navy transmitters (at home) and
while on the vessel they used 3 phase power supplies which were physically
smaller and produced less ripple. At home, I use a 1 phase power supply just
fine. These were 1KW output (4KW input) transmitters so not a lot of
> On Mar 11, 2023, at 3:38 PM, Chuck Guzis wrote:
>
> On 3/11/23 10:48, Paul Koning wrote:
>
>> Speaking of 1620 peripherals, I know there were paper tape reader/punch
>> options for it. Has anyone ever encountered those in the wild?
>
> I've seen a 1621 paper tape unit, but never used it.
On 3/11/23 10:48, Paul Koning wrote:
> Speaking of 1620 peripherals, I know there were paper tape reader/punch
> options for it. Has anyone ever encountered those in the wild?
I've seen a 1621 paper tape unit, but never used it. That always seemed
to be the wrong answer to the problem of input
> On Mar 11, 2023, at 12:36 AM, Chuck Guzis via cctalk
> wrote:
>
> On 3/10/23 20:55, jim stephens via cctalk wrote:
>
>> The 1620's I resurrected at USL in Lafayette, La. were card in and out.
>> There was also a printer. It had an assembler deck and a Fortran compiler.
>
> But no 1311s?
> On Mar 10, 2023, at 9:13 PM, Gavin Scott via cctalk
> wrote:
>
> On Fri, Mar 10, 2023 at 7:01 PM Jon Elson via cctalk
> wrote:
>> On 3/10/23 13:00, Paul Koning via cctalk wrote:
>
>>> You mean DOS/360 as opposed to OS/360?
>
>> MFT was Multiprogramming with a Fixed number of Tasks, MVT
>
> On Mar 10, 2023, at 6:26 PM, Sytse van Slooten via cctalk
> wrote:
>
>>
>> On Fri, 10 Mar 2023, Kevin Anderson via cctalk wrote:
>>>
>>
>> Which machines needed 3-phase?
>
> None that I am aware of - even the very power hungry 9021 'mainframes' I
> mentioned earlier could be powered fr
>
> On Fri, 10 Mar 2023, Kevin Anderson via cctalk wrote:
>> I always thought of the distinctions this way (from my basis of exposure
>> from late 1970s through the 1980s) and from a higher educational setting
>> primarily:
>> Mainframe = repairs required multiple technicians, some possibly ther
On 3/10/23 17:42, Paul Koning via cctalk wrote:
> CDC 6000 series is the one I know of. But they'd also use either 1 or 3
> phase regular 50/60 Hz power. For example, the console display uses 3 phase
> 400 Hz for its power supplies (nice for low ripple) and 60 Hz 110 V for fans.
> The CPU ca
On 3/10/23 20:55, jim stephens via cctalk wrote:
> The 1620's I resurrected at USL in Lafayette, La. were card in and out.
> There was also a printer. It had an assembler deck and a Fortran compiler.
But no 1311s? Shame.
--Chuck
On 3/10/23 19:07, Sellam Abraham via cctalk wrote:
The school district was thrilled to get the PDP. Then they had PG&E set
up the power for it. Some PG&E technicians did not know the difference
between "Delta" and "Wye"/"Y" three phase! Seriously dsmaged the
machine.
This goes a bit sideway
On 3/10/23 20:13, Gavin Scott via cctalk wrote:
And all the OS/360 variants were so late that they introduced three
other operating systems as a stopgap to allow IBM to actually ship
systems that were usable by customers. First came Basic Operating
System/360 (BOS/360), which was pretty much c
On 3/10/23 17:42, Paul Koning via cctalk wrote:
> CDC 6000 series is the one I know of. But they'd also use either 1 or 3
> phase regular 50/60 Hz power. For example, the console display uses 3 phase
> 400 Hz for its power supplies (nice for low ripple) and 60 Hz 110 V for fans.
> The CPU ca
that's still happening today. Up here in the north woods, trees in
lines is a weekly thing and the PGE supers will tell you directly to
"make sure you get EVERYTHING that we broke" but not to worry about
receipts.
steve
On 3/10/23 5:07 PM, Sellam Abraham via cctalk wrote:
On Fri, Mar 10, 20
On Fri, Mar 10, 2023 at 7:01 PM Jon Elson via cctalk
wrote:
> On 3/10/23 13:00, Paul Koning via cctalk wrote:
> > You mean DOS/360 as opposed to OS/360?
> MFT was Multiprogramming with a Fixed number of Tasks, MVT
> was Multiprogramming with a Variable number of Tasks.
And all the OS/360 varian
> On Mar 10, 2023, at 6:32 PM, Chuck Guzis via cctalk
> wrote:
>
> On 3/10/23 15:11, Fred Cisin via cctalk wrote:
>
>
>> extension cord / dedicated circuit / dedicated pole transformer
>>
>> Which machines needed 3-phase?
>
> Extra points for requiring an MG set furnishing 400Hz 3-phase.
OB_3-phase anecdote:
On Fri, 10 Mar 2023, Sellam Abraham via cctalk wrote:
That internet convention (OB) is so old now it's archaic, and vintage in
and of itself. Amazing.
You rang? (cf. Maynard G. Krebs)
The school district was thrilled to get the PDP. Then they had PG&E set
up the po
On 3/10/23 17:20, Bill Gunshannon via cctalk wrote:
On 3/10/2023 6:11 PM, Fred Cisin via cctalk wrote:
On Fri, 10 Mar 2023, Kevin Anderson via cctalk wrote:
I always thought of the distinctions this way (from my
basis of exposure from late 1970s through the 1980s) and
from a higher educationa
On 3/10/2023 6:32 PM, Chuck Guzis via cctalk wrote:
On 3/10/23 15:11, Fred Cisin via cctalk wrote:
extension cord / dedicated circuit / dedicated pole transformer
Which machines needed 3-phase?
Extra points for requiring an MG set furnishing 400Hz 3-phase.
Univac 1100
IBM 360/40 mounte
On Fri, Mar 10, 2023 at 3:58 PM Fred Cisin via cctalk
wrote:
> OB_3-phase anecdote:
>
That internet convention (OB) is so old now it's archaic, and vintage in
and of itself. Amazing.
> So, they decided to replace it with microcomputers. They sold it to a
> local school district, and bought a
On 3/10/23 13:00, Paul Koning via cctalk wrote:
On Mar 10, 2023, at 1:38 PM, Chuck Guzis via cctalk
wrote:
On 3/10/23 10:20, Bill Gunshannon via cctalk wrote:
The first mainframe I worked on was single user, single tasking.
S/360 DOS provided for one "background" memory partition and two
OB_3-phase anecdote:
PG&E bought a replacement machine for the school district, on the
condition that all involved go along with a false story that it had been
a lighning strike!
On Fri, 10 Mar 2023, Chuck Guzis via cctalk wrote:
Doesn't seem to be an uncommon practice. I remember an electrici
On 3/10/23 15:57, Fred Cisin via cctalk wrote:
> OB_3-phase anecdote:
> PG&E bought a replacement machine for the school district, on the
> condition that all involved go along with a false story that it had been
> a lighning strike!
Doesn't seem to be an uncommon practice. I remember an electri
OB_3-phase anecdote:
Shortly before I started teaching at the college (so I got all of the
details secondhand), . . .
They had a PDP (I don't even know what model) that they used for the
prograamming classes. But, they had constant problems with the
[after-market?] disk drive, so it was dow
On 3/10/23 15:11, Fred Cisin via cctalk wrote:
> extension cord / dedicated circuit / dedicated pole transformer
>
> Which machines needed 3-phase?
Extra points for requiring an MG set furnishing 400Hz 3-phase.
--Chuck
On 3/10/2023 6:11 PM, Fred Cisin via cctalk wrote:
On Fri, 10 Mar 2023, Kevin Anderson via cctalk wrote:
I always thought of the distinctions this way (from my basis of
exposure from late 1970s through the 1980s) and from a higher
educational setting primarily:
Mainframe = repairs required mu
On Fri, 10 Mar 2023, Kevin Anderson via cctalk wrote:
I always thought of the distinctions this way (from my basis of exposure
from late 1970s through the 1980s) and from a higher educational setting
primarily:
Mainframe = repairs required multiple technicians, some possibly there
full-time; r
I always thought of the distinctions this way (from my basis of exposure from
late 1970s through the 1980s) and from a higher educational setting primarily:
Mainframe = repairs required multiple technicians, some possibly there
full-time; regular operator(s) present, and a locked door located be
> The first mainframe I worked on was single user, single tasking and all jobs
> were
>
> submitted as "batch" as in a batch of cards. :-)
>
> Second Mainframe I worked on supported lots of users but to the user it was
>
> still small amount of interactive and the rest batch. multi-user was d
The term "mainframe" comes from telephone switching technology -- the
electromechanical kind from before the time of electronic telephone switches.
Its association with computers is from the earliest days of the commercial
computer business and precedes the minicomputer era by quite a bit.
As I
On Fri, Mar 10, 2023 at 02:00:19PM -0500, Paul Koning via cctalk wrote:
> You mean DOS/360 as opposed to OS/360? I don't know that one.
DOS/360 evolved into DOS/VS, DOS/VSE, and through a few other versions
eventually evolving into today's z/VSE.
> But OS/360 came in three flavors: PCP, MFS, a
On Fri, Mar 10, 2023 at 10:21 AM Bill Gunshannon via cctalk <
cctalk@classiccmp.org> wrote:
>
> This whole mess is to complicated to ever sort out and loaded with more
> opinion than fact. Probably because in reality all three terms are
> marketing speak and don't have real, verifiable definition
On 3/10/23 12:26, Lee Courtney via cctalk wrote:
Mainframe - Minicomputer = RAS and order magnitude better I/O
That I think is the best distinction from the minicomputer era.
Even within the same system architecture (e.g. VAX's) there were
machines that were solidly mini's and those that ten
> On Mar 9, 2023, at 1:51 PM, Steve Lewis via cctalk
> wrote:
>
> Not to open a huge can of worms but...
>
> I always considered a mainframe to basically be a "fully decked out"
> minicomputer.
>
> A minicomputer has a core CPU and memory (or racks of memory), then is
> "decked out" wit
> On Mar 10, 2023, at 1:38 PM, Chuck Guzis via cctalk
> wrote:
>
> On 3/10/23 10:20, Bill Gunshannon via cctalk wrote:
>
>> The first mainframe I worked on was single user, single tasking.
>
> S/360 DOS provided for one "background" memory partition and two
> "foreground" ones. Batch submi
On 3/10/23 10:20, Bill Gunshannon via cctalk wrote:
> The first mainframe I worked on was single user, single tasking.
S/360 DOS provided for one "background" memory partition and two
"foreground" ones. Batch submissions would be background, with some
installations using the smaller foreground o
On 3/10/2023 1:39 AM, Lars Brinkhoff via cctalk wrote:
Kind of yes, but recally early computers were often operated in batch mode.
Minis would typically do one task, or handle a few users.
The first mainframe I worked on was single user, single tasking and all
jobs were
submitted as "ba
Mainframe - Minicomputer = RAS and order magnitude better I/O
On Fri, Mar 10, 2023 at 7:42 AM Paul Koning via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> > On Mar 10, 2023, at 10:05 AM, Kevin Monceaux via cctalk <
> cctalk@classiccmp.org> wrote:
> >
> > On Thu, Mar 09, 2023 at 03:51:44PM -0600,
> On Mar 10, 2023, at 10:05 AM, Kevin Monceaux via cctalk
> wrote:
>
> On Thu, Mar 09, 2023 at 03:51:44PM -0600, Steve Lewis via cctalk wrote:
>
>> I always considered a mainframe to basically be a "fully decked out"
>> minicomputer.
>
> I've always considered a fully decked out minicompute
On Thu, Mar 09, 2023 at 03:51:44PM -0600, Steve Lewis via cctalk wrote:
> I always considered a mainframe to basically be a "fully decked out"
> minicomputer.
I've always considered a fully decked out minicomputer to be a fully decked
out minicomputer. :-)
> What do you guys think? Or is a m
On 3/9/23 22:39, Lars Brinkhoff via cctalk wrote:
> Consider that a minicomputer is larger than microcomputer.
Consider the terms (now rarely seen): "midicomputer" and
"superminicomputer"
--Chuck
Steve Lewis wrote:
> I always considered a mainframe to basically be a "fully decked out"
> minicomputer.
You may find people will disagree with that. I'm not sure what
mainframe means either, but I'm asking around. Pysical size, I/O
capacity, CPU offload to front ends, and users served seem to
Fred Cisin wrote:
> So, what defines a "supercomputer"?
FLOPS
We still have ice on the inside of the windows up here 😉
Nice of you guys to remember this history. Some of the STAR designers and team
are still around and kicking. Just had lunch with four of them last Friday.
I learned too that as they migrated the design from STAR to 205 to ETA10, some
of
As to what a "station" looked like:
https://i.pinimg.com/originals/15/6d/fa/156dfa0a3b573b6ff9ca074d62fb19a9.jpg
Those things with CRT terminals on them are stations--they handle the
various I/O tasks. Basically, 16 bit minicomputers.
The photo might be the installation at CDC ADL, from the low
Thanks!
Steve
On 3/9/23 7:54 PM, Chuck Guzis via cctalk wrote:
On 3/9/23 18:24, steve shumaker via cctalk wrote:
for the non mainframe folks here, what does SBU/SCU/SDU mean?
SBU-station buffer unit, but why not read about it in a contemporary
article by Chuck Purcell?
https://dl.acm.org/doi/
On 3/9/23 18:24, steve shumaker via cctalk wrote:
> for the non mainframe folks here, what does SBU/SCU/SDU mean?
SBU-station buffer unit, but why not read about it in a contemporary
article by Chuck Purcell?
https://dl.acm.org/doi/pdf/10.1145/1500175.1500257
--Chuck
On 3/9/23 17:56, Paul Koning wrote:
> That picture serves to remind us of the packaging and cooling genius that
> went into the CDC 6000 series machines, which could fairly be called the
> first supercomputers. Logic like that and more, but in a much smaller
> package so it can run faster. I
for the non mainframe folks here, what does SBU/SCU/SDU mean?
Steve
On 3/9/23 5:45 PM, Chuck Guzis via cctalk wrote:
On 3/9/23 17:33, Jon Elson via cctalk wrote:
On 3/9/23 15:51, Steve Lewis via cctalk wrote:
Well, the IBM 709x was housed in 11 or more cabinets that were larger
than the larges
On Thu, 9 Mar 2023, Paul Koning via cctalk wrote:
That picture serves to remind us of the packaging and cooling genius
that went into the CDC 6000 series machines, which could fairly be
called the first supercomputers. Logic like that and more, but in a
much smaller package so it can run faste
> On Mar 9, 2023, at 8:45 PM, Chuck Guzis via cctalk
> wrote:
>
> On 3/9/23 17:33, Jon Elson via cctalk wrote:
>> On 3/9/23 15:51, Steve Lewis via cctalk wrote:
>
>> Well, the IBM 709x was housed in 11 or more cabinets that were larger
>> than the largest home refrigerator. These cabinets w
On 3/9/23 17:33, Jon Elson via cctalk wrote:
> On 3/9/23 15:51, Steve Lewis via cctalk wrote:
> Well, the IBM 709x was housed in 11 or more cabinets that were larger
> than the largest home refrigerator. These cabinets were interconnected
> by cables containing 100 coax cables and had one-foot sq
On 3/9/23 15:51, Steve Lewis via cctalk wrote:
Not to open a huge can of worms but...
I always considered a mainframe to basically be a "fully decked out"
minicomputer.
Well, the IBM 709x was housed in 11 or more cabinets that
were larger than the largest home refrigerator. These
cabine
Speaking of pornography, the ad on page 14 of 80 Micro magazine August 1980
was a bit of a shocker.
https://archive.org/details/80-microcomputing-magazine-1980-08/page/n13/mode/2up
On Thu, Mar 9, 2023 at 5:40 PM Sellam Abraham via cctalk <
cctalk@classiccmp.org> wrote:
> On Thu, Mar 9, 2023 at 2
On Thu, Mar 9, 2023 at 2:18 PM Chuck Guzis via cctalk
wrote:
> On 3/9/23 13:51, Steve Lewis via cctalk wrote:
> >...
>
> Use the NYT definition of a minicomputer from 1970. "Costs less than
> $25,000" (in 1970 dollars).
>
> --Chuck
Like "vintage", or pornography, it's one of those things that
On 3/9/23 13:51, Steve Lewis via cctalk wrote:
>...
Use the NYT definition of a minicomputer from 1970. "Costs less than
$25,000" (in 1970 dollars).
--Chuck
On Thu, 9 Mar 2023, Steve Lewis via cctalk wrote:
Actually, to answer my own question: if "main frame" refers to the actual
framing... well the PDP-1, PDP-10, PDP-10 were minicomputers and still
required a lot of metal "framing" to set up. So, can't they be considered
mainframes?
(another notio
> On Mar 9, 2023, at 5:00 PM, Steve Lewis via cctalk
> wrote:
>
> Actually, to answer my own question: if "main frame" refers to the actual
> framing... well the PDP-1, PDP-10, PDP-10 were minicomputers and still
> required a lot of metal "framing" to set up. So, can't they be considered
>
> On Mar 9, 2023, at 4:51 PM, Steve Lewis via cctalk
> wrote:
>
> Not to open a huge can of worms but...
>
> I always considered a mainframe to basically be a "fully decked out"
> minicomputer.
>
> A minicomputer has a core CPU and memory (or racks of memory), then is
> "decked out" wit
This has been around the block:
You can lose a screw in a micro.
You can lose a screwdriver in a mini.
You can get lost in a mainframe.
--
personal: http://www.cameronkaiser.com/ --
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com
Actually, to answer my own question: if "main frame" refers to the actual
framing... well the PDP-1, PDP-10, PDP-10 were minicomputers and still
required a lot of metal "framing" to set up. So, can't they be considered
mainframes?
(another notion is that mainframes are "multi-user" -- most early
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