What follows is a tale of carelessness, stupidity and laziness. So far,
I haven't found an excuse to add ignorance to the list. ;) As you may
recall, I was testing an 8" floppy drive that was reading inconsistently
on an Altos 8000 system, when, while testing with a replacement drive,
the 24V powe
On 8/20/2015 10:16 PM, Eric Smith wrote:
>
> It turns out that even though this bizarre variant of the 9406 uses
> the Shugart pinout for the data connector instead of the MPI pinout,
> and uses the same DC power connector as the Shugart, instead of the
> header used in normal MPI 9406 drives, th
On 8/21/2015 10:27 AM, Johnny Billquist wrote:
>
> And I don't know much about anything for non-DEC stuff. So while I hope
> there are copies of stuff around, think some before redistributing it.
>
> Johnny
>
Some other licenses (or lack thereof) that make software readily
available that I
On 8/21/2015 1:50 PM, tony duell wrote:
>
> I will happily agree that it is both morally and legally a crime to
> distribute somebody else's
> work that they get income from. The discussion of manuals and software here
> refers to
> items that the original author/company cannot or will not pro
So, how does one de-yellow something? I have a VT-100 and some other
gear that could use that process.
JRJ
On 8/21/2015 1:15 PM, Evan Koblentz wrote:
> Going to be de-yellowing a //e Platinum this weekend. Check out this
> picture of the top cover. You can see the non-yellowed part on bottom.
>
On 8/21/2015 4:34 PM, Fred Cisin wrote:
> Where would MICROS~1 be if Gary Kildall were to have been litigious?
How so? Digital Research spurned IBM, and would have had to take IBM
on as well as Microsoft. Litigious or not, it would have been a
seriously uphill battle.
JRJ
On 8/21/2015 5:25 PM, Fred Cisin wrote:
>>> Where would MICROS~1 be if Gary Kildall were to have been litigious?
>>
> On Fri, 21 Aug 2015, Jay Jaeger wrote:
>> How so? Digital Research spurned IBM, and would have had to take IBM
>> on as well as Microsoft. Litigi
Well, the Altos ACS-8000-2 power supply is all back together and working
again, in reasonable health. And, as I posted a few days back, I
swapped out the bearings. Unfortunately, that does not seem to have helped.
Now that the problem child is the second drive, though, I was able to
put a floppy
On 8/22/2015 8:14 AM, Tothwolf wrote:
>
> It only helps a little though and when eBay eliminated wildcard matching
> awhile back, they also reduced the maximum query length. What I /really/
> don't like about eBay's current search system, is how it substitutes
> keywords internally. If I search f
On 8/22/2015 12:20 AM, Chuck Guzis wrote:
> On 08/21/2015 06:46 PM, Jay Jaeger wrote:
>
>> One other thing I have noticed is that sometimes after a read problem
>> on the bad drive the FD 1791 floppy controller chip seems to get into
>> a "snit" that even a res
On 8/22/2015 5:32 AM, Brent Hilpert wrote:
> On 2015-Aug-21, at 10:20 PM, Ali wrote:
>
> A brief conceptual overview:
>
> Vacuum-column and spring-arm drives comprise 3 servo systems:
> - each reel motor is in a closed servo loop with position sensors in
> its associated vacuum column or s
On 8/22/2015 12:55 PM, Tapley, Mark wrote:
> Jay,
> this is a really great post. I feel really bad for you - having the
> same piece of equipment go bang/flash more than once would have been totally
> demoralizing to me - but I really admire both your tenacity and your
> willingness to sh
On 8/22/2015 4:11 PM, Eric Smith wrote:
> In my mostly misspent youth, I once had the opportunity to visit a
> facility where a now obscure supercomputer was developed. The product
> manager was showing me around.
That wasn't Astronautics' ZS, by any chance? I ask, because I know some
fol
Univac 1100 series - one's complement.
On 8/22/2015 4:23 PM, Sean Conner wrote:
>
> For my own morbid curiosity, and because it came up on another mailing
> list I'm on [1], what machines commercially avaialble were sign magnitude
> and one's complement? Every machine I've encountered was two'
On 8/22/2015 2:41 PM, Jay Jaeger wrote:
>
> Unfortunately, bearings did not help the floppy drive, so now I am busy
> taking the floppy power supply I got with my FD 100-8, making sure it is
> up to spec to use with the Shugart (and correcting that if needs be),
> and making it sa
I figured as much. And, with a 10K ohm bleeder resistor that I added on
the output (another added safety feature), the voltage dropped down to
5.2 and change - within spec.
JRJ
On 8/22/2015 6:19 PM, Dave G4UGM wrote:
>>
>> Also, I now know why the +5 V is high. It has a UA 7805 3 terminal
> reg
Anyone out there have:
1) The Schematic for the newer SA-800/SA-701 board part number 25229.1 ?
(It might also go by 25228 or 27121). The SA-800 maintenance manual on
bitsavers from Feb 78 describes the original discrete board (such as I
have on my Altos in the SA-800s) and an LSI-based board whic
On 8/23/2015 9:39 PM, Jay Jaeger wrote:
>
> When I connect up drive "X", the +24V series pass transistor gets very
> warm and the +24V drops to around +8.5V (regardless of whether or not
> the stepper motor leads are connected). On the circuit board, a
> Shugart AS
On 8/25/2015 12:45 PM, Sean Caron wrote:
> Nuts and Volts is a neat little magazine ... I had a subscription for a
> while back when I was in high school ... I ought to re-up one of these days.
>
> Best,
>
> Sean
It is worth subscribing for a full year -- you get access to back
issues. Absolute
On 8/24/2015 8:21 PM, Jay Jaeger wrote:
> On 8/23/2015 9:39 PM, Jay Jaeger wrote:
>
>>
>> When I connect up drive "X", the +24V series pass transistor gets very
>> warm and the +24V drops to around +8.5V (regardless of whether or not
>> the stepper moto
On 8/26/2015 1:20 AM, jwsmobile wrote:
>
> Microdata card extractors were always engaged to a rail that was metal,
> and in one site I was at, there was a CE sized hole in the wall behind a
> system when the engineer extracted the printer card and the card
> extractors came free from the system.
On 8/26/2015 8:19 AM, Paul Koning wrote:
>
> I heard of this sort of thing happening to the DEC building at Marlboro.
> Supposedly it had two mains entrances, served from different power lines (and
> different companies? Seems odd). One of the machine rooms had feeds from
> both ends, and on
On 8/26/2015 8:00 AM, Jacob Ritorto wrote:
> Ah, I knew that sounded familiar. I have a pretty sizable stack of what
> appear to be original nine-track tapes with their pdp11 software on them in
> my collection. Any interest? I could try to get my tu-10 going again to
> image them, but might ne
On 8/26/2015 2:21 PM, Mike Loewen wrote:
> On Wed, 26 Aug 2015, Jay Jaeger wrote:
>
>> On 8/26/2015 8:00 AM, Jacob Ritorto wrote:
>>
>>> Ah, I knew that sounded familiar. I have a pretty sizable stack of what
>>> appear to be original nine-track tapes with
On 8/26/2015 2:33 PM, Paul Koning wrote:
>
>> On Aug 26, 2015, at 3:16 PM, Jay Jaeger wrote:
>>
>> On 8/26/2015 8:19 AM, Paul Koning wrote:
>>>
>>> I heard of this sort of thing happening to the DEC building at Marlboro.
>>> Supposedly it had
On 8/26/2015 3:07 PM, Noel Chiappa wrote:
> > From: Paul Koning
>
> > What happened is that the "grounds" were offset enough, and with enough
> > of a current supply, that the ground strap that's supposed to connect
> > the row of RP06 drives melted.
> > This sort of thing is a
On 8/26/2015 3:48 PM, Christian Kennedy wrote:
>
> On 8/26/15 12:33, Paul Koning wrote:
>
>> 90? Three phase power is 120 degrees apart, center-tapped "two
>> phase" home power is 180 degrees, but I don't know of any power
>> company service that produces 90 degree shifts.
>
> There's a bunch o
On 8/27/2015 3:46 AM, Kevin Tikker wrote:
> Looking for an IBM 1620 to purchase. Any leads greatly appreciate.
>
> Kevin Tikker
>
>
> Sent from my iPhone
>
And, if you find one, as if they have an IBM 1410, while you are at it.
(As far as I know, NONE of those exist, unless IBM has one squir
On 8/27/2015 3:49 PM, william degnan wrote:
> I'd like a 1620 too please. .. or a 1710 if I have to settle.
>
> In all seriousness I may not have the machines but I do have a lot of
> 1401/1620/1710 docs on hand in my little private library here in
> Landenberg, should anyone be passing this way
On 8/27/2015 9:18 PM, Kevin Tikker wrote:
> Thanks very much for the link. Maybe there is one out there
>
There were two IBM 1620's in the College of Engineering in Madison, WI
when I started school, and rumor was that one of them ended up in
somebody's basement. Whether or not that rumor was tr
On 8/27/2015 10:19 PM, Kyle Owen wrote:
> I hope to start backing up my MicroVAX 3800 soon via the TK70. Sounds like
> 8mm is more unreliable than the TK70, and I don't have but one
> magneto-optical disk.
>
> Are there any precautions I need to take before sticking a tape in the
> drive? Pinch r
Cool. Wonder what it will go for.
JRJ
On 8/28/2015 4:14 AM, P Gebhardt wrote:
>
>
>
>
>>
>> (Rumor was that there was also a CDC-160A in somebody's basement here in
>> town, as well).
>>
>
>
> Speaking of which:
>
> http://www.ebay.com/itm/Vintage-Control-Data-160-Computer-System-Vintage-
On 8/28/2015 10:44 AM, Mark J. Blair wrote:
>
>> On Aug 28, 2015, at 08:09, Al Kossow wrote:
>>
>> On 8/28/15 12:46 AM, Mark J. Blair wrote:
>>> leave the tapes in my truck for a week to bake them? :)
>>>
>>
>> not enough airflow
>
> Well, I guess I'll need to build a little convection tape bake
On 8/28/2015 10:58 AM, Mark J. Blair wrote:
>
>> On Aug 28, 2015, at 08:52, Matt Patoray wrote:
>>
>> If you can find an "American Harvest" food dehydrator, those work great for
>> baking tapes, low controlled heat, a round form factor and it can hold 10"
>> reels of tape.
>
> Interesting! Is
On 8/28/2015 2:00 PM, Kevin Tikker wrote:
> Which government agency?
>
>
> Sent from my iPhone
>
>> On Aug 28, 2015, at 5:15 AM, ben wrote:
>>
>>> On 8/28/2015 3:14 AM, P Gebhardt wrote:
>> We all KNOW the government people still have one running
>> for your tax . After all the bribes and s
On 8/28/2015 2:59 AM, Operon Lac wrote:
> What takes, today, present time, to read 1/2-inch reel-to-reel tape?
> Years ago, I've found literally HUNDREDS of half inch reel-to-reel tape,
> stacked outside a telco switching building. I managed to scavenge one
> hundred and ninety of them. Ended up t
On 8/29/2015 10:57 AM, Al Kossow wrote:
> On 8/28/15 9:25 AM, Jay Jaeger wrote:
>
>> Many/most 9 Track tapes (those from the early to mid-eighties until 1995
>> or so - what matters is the date of manufacture, not when they were
>> written) have to be "baked" bef
On 8/29/2015 1:04 PM, Fred Cisin wrote:
> On Sat, 29 Aug 2015, couryho...@aol.com wrote:
>> I thought the center thing was a duct also Ed#
>
> Baking diskettes in it would reduce the central ducting.
>
> The HarborFreight food dehydrator (#66906 $30, currently sale at $25)
> will work with
On 8/29/2015 3:36 PM, Fred Cisin wrote:
>>> The HarborFreight food dehydrator (#66906 $30, currently sale at $25)
>>> will work with the central ducting partially blocked.
>
> On Sat, 29 Aug 2015, Jay Jaeger wrote:
>> Ooooh. Thanks for the pointer to HarborFreigh
On 8/29/2015 5:11 PM, couryho...@aol.com wrote:
> this is similar to harvest one I have as my tiny baker. BUT I do not
> see a temp control..
>
> more details!?
>
> even the temp control on harvester not to be trusted I have a long
> Kodak process thermometer I stick in fo
On 8/31/2015 1:43 PM, Chuck Guzis wrote:
>
> Reports were varied and interesting. UV was cited repeatedly as a
> suspect when it came to causing yellowing in the first place This flies
> in the face of my experience in that I've had gear that's spent almost
> all of its life in a closed storage
On 9/1/2015 10:01 AM, Ethan Dicks wrote:
>
>> The main objective is to provide the memory and I/O necessary
>> to be able to run Unix V1
>
> I am very interested in the MEM11 for this exact reason. I have a
> PDP-11/20 that I'd love to do this with.
>
You could also try Mini-Unix on your 11/2
On 9/1/2015 7:56 PM, Ethan Dicks wrote:
> On Tue, Sep 1, 2015 at 11:39 AM, Jay Jaeger wrote:
>> On 9/1/2015 10:01 AM, Ethan Dicks wrote:
>>>
>>>> run Unix V1
>>>
>>> I am very interested in the MEM11 for this exact reason. I have a
>>>
RK05 would be suitable
Guy Sotomayor wrote:
>
>
>On 9/2/15 8:42 AM, j...@cimmeri.com wrote:
>>
>>
>> On Tue, Sep 1, 2015 at 11:39 AM, Jay Jaeger wrote:
>>
>>> On 9/1/2015 10:01 AM, Ethan Dicks wrote:
>>>>> run Unix V1
>>>&g
Yup. I have done the same kind of thing with GALs (which offer the
convenience of re-programming, though not the longevity of a PAL.)
Did this as a backup for the Signetics chips on a Mark 8.
You can see them in this Flickr stream - I had both "normal" and open
collector variants, and designed b
On 9/3/2015 11:50 PM, Chuck Guzis wrote:
> On 09/03/2015 08:49 PM, dwight wrote:
>> A pal could have worked as well. Dwight
>
> A GAL should also be useful--and maybe a bit more flexible. To emulate
> the OC outputs, one can simply manipulate the output enable so that a
> '1' output is High-Z an
On 9/4/2015 1:46 PM, William Donzelli wrote:
>> Last year, I made a 10 hour round-trip from Canada to the US to pick up a
>> Northstar Horizon. Upon returning to Canada with it, I had a long
>> conversation with Canada Customs about why I would make a 10-hour day-trip
>> to the US to pick up a
On 9/4/2015 11:10 PM, dwight wrote:
> The idea for using the tristate control for an OC output has been
> used many times before.
> An example is on the SwyftCard for the Apple 2e.
> It needed a OC for the reset as I recall and the PAL used
> that trick.
> The only possible issue is the limited cu
On 9/5/2015 7:10 PM, william degnan wrote:
> Anyone here get the Control Data 160 (Ebay 252070822992)? I must admit
> time, money, and space aside I would love to have had this one! (I have
> the manuals at least)
>
I would not be terribly surprised if that auction result flushed out one
or two
On 9/5/2015 10:40 AM, william degnan wrote:
> Ok. I checked my tu10, it has the backplane, it is a master. I see where
> it connects using the backplane cable to the pdp11. I never worked with a
> TU10 before and I was looking to see if references to the tm11 were
> "module/card" or backplane i
On 9/6/2015 3:15 AM, Eric Smith wrote:
> On Sat, Sep 5, 2015 at 7:54 PM, Jay Jaeger wrote:
>> Just to be clear, a TU10, even a master, does NOT connect directly to a
>> PDP-11. Instead, a cable of the same general ilk as a BC11 UNIBUS Cable
>> (but I have not verified i
On 9/8/2015 9:35 PM, Billy Pettit wrote:
> Chuck Guzis wrote:
>
> Subject: Re: Control Data 160 Ebay
>
> I believe the eBay lister stated that it was a 160, not the -A. So no
> return jump for you...
>
> --Chuck
>
But quite a lot of the other printed material with it on the listing
says 16
On 9/9/2015 11:03 AM, william degnan wrote:
> On Wed, Sep 9, 2015 at 11:22 AM, Jay Jaeger wrote:
>
>> On 9/8/2015 9:35 PM, Billy Pettit wrote:
>>
>>> Chuck Guzis wrote:
>>>
>>> Subject: Re: Control Data 160 Ebay
>>>
>>> I belie
On 9/8/2015 9:38 PM, Glen Slick wrote:
> On Tue, Sep 8, 2015 at 1:19 PM, Sean Caron wrote:
>> The median listing price for them on eBay for a 29B with pack seems to be
>> around $3-400 which IMO is a little steep for a 30+ year old PROM
>> programmer. Hopefully your best offer successfully accepte
On 9/10/2015 5:29 PM, Chuck Guzis wrote:
> On 09/10/2015 02:32 PM, Jay Jaeger wrote:
> Which reminds me--I went over to the local DMV to renew my "papers".
> Since the terrorism craze, the state has changed the rules for verifying
> identity to now include a birth certifi
On 9/10/2015 2:04 PM, Chuck Guzis wrote:
> On 09/10/2015 11:47 AM, Fred Cisin wrote:
>
>
> To me, the stock feels very similar to the stock used for our
> vote-by-mail mark-sense ballots here in Oregon.
>
Or the infamous "hanging chad" punch(ed) ;) cards from son of Bush's
first election. I g
On 9/10/2015 6:02 PM, Joseph Lang wrote:
> Lazy programmers. Poor specs for project. Clueless project managers.
> Doesn't seem a simple database query should be all that hard.
>
> Don't get me started on that real ID garbage. Not one piece of required
> "proof" included a photo
>
> Joe
>
On 9/10/2015 8:32 PM, Jon Elson wrote:
>
> So, I wonder if I can ask classiccmp members, especially in the US, to
> check if they can view this page:
> http://members.iinet.net.au/~daveb/simplex/simplex.html
>
>
I cannot make a connection. My DNS is able to resolve the address.
ISP is Charte
On 9/11/2015 10:52 AM, Paul Koning wrote:
>
>> On Sep 11, 2015, at 11:40 AM, Jay Jaeger wrote:
>>
>>
>> I cannot make a connection. My DNS is able to resolve the address.
>>
>
> I saw the same sort of thing but I let traceroute keep running. The r
On 9/11/2015 11:58 AM, Noel Chiappa wrote:
> > From: Jon Elson
>
> > so MANY others who could not access the members.iinet page were finding
> > they got stopped at cogentco.
>^^^
>
> Well, to be precise 'Cogentco was the last node on the route which
I have fiche for ZKDJB0, and fortunately it seems to match at this
particular error and address.
"This test looks for BEVENT to Interrupt when BIT 6 in the BEVENT
Control register is set and interrupt priority level is set to 5".
The particular error that you identify occurs as the result of an E
On 9/14/2015 1:10 PM, Holm Tiffe wrote:
> Holm Tiffe wrote:
>
>
> Ok, the test is running fine now ..
> I had to enable BEVENT with Switch 1 on the BA23 front panel (was disabled)
> but still the same error. Next I removed W9 from the M8192 Module and it
> works now. :-|
>
> Please, can someone
On 9/16/2015 1:23 PM, Noel Chiappa wrote:
> > From: tony duell
>
> > Do you have a URL for the prints (to save me going through all possible
> > candidates on bitsavers)?
>
> Yeah, as per my 'where are subsystem prints' page, they are in the 11/23
> print set MP00740, pg. 81-87 (schem
On 9/17/2015 2:27 PM, Paul Koning wrote:
>
>> On Sep 17, 2015, at 2:56 PM, dwight wrote:
>>
>> What is the definition of self modifying?
>> Is it changing an instruction to execute in the thread to be run?
>> How about adding or subtracting something to be done in an execution
>> queue?
>
> I'm
I will contact you off-list.
JRJ
On 9/19/2015 11:46 AM, Jay West wrote:
> So does anyone have a trashed/dead front panel for a Data General S/130
> (S/200 would also work) that can be a donor? All I need are two
> switches/paddles/Covers, but my S/200 front panel is perfect so I don't want
> to r
On 9/21/2015 4:30 AM, Johnny Billquist wrote:
> On 2015-09-21 02:11, Jerome H. Fine wrote:
>> >Chuck Guzis wrote:
>> Note that the RX50 was the same. DEC finally changed
>> their marketing policy with the RX33 drive which used the
>> same 3.5" HD floppy media as the PC. It was actually
>> possi
On 9/21/2015 11:34 AM, Paul Koning wrote:
> For RX50? On standard PDP11s, those used an MSCP controller, which means the
> controller would have to do it. Did it? The only MSCP controller I remember
> that did formatting was the UDA50.
>
> I suppose you could on a Pro, since that had its own
RD51, RD52, RD53, RD54, RD31, RD32, RX33 on an *** RQDX3 **
(There should be a "Fat Finger Day" ;) ).
JRJ
On 9/21/2015 3:22 PM, Jay Jaeger wrote:
> On 9/21/2015 11:34 AM, Paul Koning wrote:
>
>> For RX50? On standard PDP11s, those used an MSCP controller, which means
&
On 9/21/2015 2:19 PM, william degnan wrote:
> What are you going to do with these? Is there a ROM archive for DEC
> printer ROMs?
>
Well, I expect bitsavers would happily host them in .../bits ;)
Well, I have (what I think is) an entire Nova 3, also sitting in a
garage (mine, of course), that we could discuss. Where are you located?
(Mine is in Madison, WI USA)
JRJ
On 9/21/2015 2:35 PM, shad wrote:
> Hello,
> you have a very nice lot of DG stuff, indeed!
>
> I have a Nova 3 sitti
??? What do you mean by "blue dg et head looking terminal" ???
On 9/21/2015 8:39 PM, couryho...@aol.com wrote:
> would like to find blue dg et head looking terminal to go with small
> eclipse
> this thing is a beauty and has a tiny side by side reel to reel deck
>
> just would be nic
W I GET IT. Blue DG "E.T." head looking terminal. Yeah, that
would probably be a D200.
JRJ
On 9/22/2015 11:08 AM, Jay West wrote:
> Jay Jaeger wrote...
>
> ??? What do you mean by "blue dg et head looking terminal" ???
>
>
> I'd bet that he
of advertising material to display with it... but yea... it
> cries out to have a terminal with it!
>
>
>
> In a message dated 9/22/2015 9:08:14 A.M. US Mountain Standard Time,
> jw...@classiccmp.org writes:
>
> Jay Jaeger wrote...
>
>
Reading the two referenced links leads me to a different conclusion:
FORTRAN would not do the job at all, so he started from scratch - almost
immediately.
"Anyway, it took him about a day to realize that he didn't want to do a
Fortran compiler at all. So he did this very simple language called B
a
So, I am looking to convert my old Access database I have used for many
years to a MySQL database, with the expectation that I will eventually
publish it on a web page for public lookup.
Below is my first cut at a database design for it. I'd be happy for
comments and suggestions, to the list or d
Hmmm. I am getting a DNS miss on www.smecc.org - was not getting that
earlier today.
JRJ
On 9/22/2015 8:37 PM, couryho...@aol.com wrote:
> One thing first look at this andneed more info on it and docs.
>
> wish I had more info on this IBM tube type digital logic trainer
>
On 9/22/2015 8:49 PM, Chuck Guzis wrote:
> On 09/22/2015 06:31 PM, Jon Elson wrote:
>
>> So, B was never actually a FORTRAN compiler, just Ken started
>> thinking about FORTRAN grammar and within one DAY took off in a
>> different direction. By that time (1969 or so) FORTRAN was a really
>> old
On 9/22/2015 9:25 PM, Chuck Guzis wrote:
> On 09/22/2015 07:11 PM, Jay Jaeger wrote:
>
> We've been here before and I don't care to chew already masticated cud.
> Suffice it to say, that I've never seen a C for a non-binary,
> variable-word-length machine usin
On 9/22/2015 10:44 PM, ben wrote:
> On 9/22/2015 7:31 PM, Jon Elson wrote:
>
>> So, B was never actually a FORTRAN compiler, just Ken started thinking
>> about FORTRAN grammar and within one DAY took off in a different
>> direction. By that time (1969 or so) FORTRAN was a really old
>> language
On 9/22/2015 10:12 PM, Zane Healy wrote:
> My recommendation would be to ensure compatibility with the MARC database
> format. Even if you don't include all the fields, the fields you do have
> should be compatible. If you look you should find Open Source projects that
> are MARC compatible.
On 9/22/2015 11:22 PM, ben wrote:
> On 9/22/2015 10:08 PM, Jay Jaeger wrote:
>> On 9/22/2015 10:44 PM, ben wrote:
>>
>>> On 9/22/2015 7:31 PM, Jon Elson wrote:
>>>
>>>> So, B was never actually a FORTRAN compiler, just Ken started thinking
>>&
On 9/22/2015 11:00 PM, couryho...@aol.com wrote:
> probably an artifact generated by my migraine this evening .
>
Ugh. Had some of those while I was in High School, complete with
squiggly lines, often nausea and hours of intense pain. You have my
sympathy.
Then one day I started to get on
On 9/23/2015 3:58 AM, couryho...@aol.com wrote:
> Yes host was having hickups it seems.
>
> Take a look at the neat logic trainer by IBM at link below,
>
> Wish I had more info on this IBM tube type digital logic trainer
> kit. comes in a wonderful fitted case with al
On 9/23/2015 1:23 AM, Chuck Guzis wrote:
> On 09/22/2015 09:06 PM, Jay Jaeger wrote:
>
>> That is just because they are so old that, aside from collectors or
>> those interested in a particular old machine, nobody ever *bothered*.
>> By the time C came along, those machine
s the following:
Machine_MFG(K), Manual_Number(K), Title, Type
And I need a relationship table to bind the two together:
TABLE ManaulArtifacts
ArtifactID(K), Machine_MFG, Manual_Number
>
> Steve.
>
>
> -------- Original Message ---
On 9/23/2015 9:10 AM, Mouse wrote:
>> I am 100% certain, for example, that it would be possible to come up
>> with a C compiler for a 40K IBM 1410, which is in the set you
>> describe.
>
> Possible? Sure. But it would be difficult; you would need to simulate
> a binary machine - C has a whole bu
On 9/23/2015 11:28 AM, couryhouse wrote:
> Wow! That is neat!
> Our Dec logic trainer has sort of 8i looking toggles and lots of patch
> cords... I had not seen one like yours. ... what is the date?
> Ed#
>
>
>
There is an earlier one of similar design, but blue colored, in the
1966-67, 1967 an
On 9/23/2015 11:17 AM, Jon Elson wrote:
> On 09/23/2015 03:39 AM, ANDY HOLT wrote:
>>> From: "Chuck Guzis"
>> …
>>> After all, languages are supposed to expose features
>>> of the underlying machine to the programmer.
>> Many believe that the purpose of languages is to HIDE (abstract) the
>> unde
On 9/23/2015 1:45 PM, m...@markesystems.com wrote:
>> There were plenty of assemblers around, some even native. Heck, I wrote
>> both an 8008 and an 8080 cross-assembler (in FORTRAN, naturally). It's
>> not rocket science. One friend of mine wrote his assembler as macros
>> for a mainframe assem
On 9/23/2015 2:34 PM, couryho...@aol.com wrote:
> I really believe a person would make an entire interesting
> collection of just logic trainers!
>
> we have a couple of the MINIVAC trainers too one I keep under
> glass and the other I take out for show and tell.
>
My mother
If anyone cares a draft data model is visible at:
http://webpages.charter.net/thecomputercollection/misc/manualmodel.pdf
(It may change as I work on the design).
Biggest change from earlier discussions: I found no reason not to merge
the manuals/artifacts relationship table into the artifact tab
On 9/23/2015 2:06 PM, m...@markesystems.com wrote:
>> So, I am looking to convert my old Access database I have used for many
>> years to a MySQL database, with the expectation that I will eventually
>> publish it on a web page for public lookup.
>
> I don't know what you're looking at for the fro
On 9/23/2015 4:27 PM, ben wrote:
> On 9/23/2015 2:39 AM, ANDY HOLT wrote:
>>> From: "Chuck Guzis"
>>
>> …
>>> After all, languages are supposed to expose features
>>> of the underlying machine to the programmer.
>>
>> Many believe that the purpose of languages is to HIDE (abstract) the
>> underly
On 9/23/2015 6:24 PM, Chuck Guzis wrote:
> On 09/23/2015 02:27 PM, ben wrote:
>
>> The 60's idea that MACROS could do that seems to have faded away.
>> Ben.
>
> It depends. One very handy method is to devise a machine architecture,
> complete with registers and opcodes, and write the applicatio
On 9/24/2015 12:22 AM, Eric Smith wrote:
> On Wed, Sep 23, 2015 at 8:30 AM, Jay Jaeger wrote:
>> An int just has to be able to store numbers of a certain magnitude.
>> Same with long. You do have to be able to convert between longs (and
>> possibly ints) and addresses (*).
On 9/24/2015 2:04 AM, ben wrote:
> On 9/23/2015 11:22 PM, Eric Smith wrote:
>
>
> 0-99 can hold a trimmed character set and 10 digits per int.
> 5chars per word sounds right on decimal machine.
> Logic operations would be on the digit rather the binary
> level.
On a 1410 (or 1401) 0-63 can
On 9/23/2015 8:18 PM, ste...@malikoff.com wrote:
> Not sure why you have VARCHARs for primary keys, why not use the conventional
> auto-increment int so you can dispense with
> the LastGeneratedArtifactID table.
>
> CREATE TABLE Manual_Artifact
> (
> ArtifactID INT(11) NOT NULL AUTO_INCREM
On 9/24/2015 2:12 PM, Rich Alderson wrote:
> From: Jay Jaeger
> Sent: Thursday, September 24, 2015 8:01 AM
>
>> You seem to be supposing that I said one could/would implement ANSI/ISO C
>> on a 1410 in native code
>
> [snip]
>
>> I would not suggest that on
On 9/25/2015 7:24 AM, tony duell wrote:
>>
>> Does anyone have both of these that I can pick their brains?
>
> Yes.
>
> The RK06/07 cable connects all pins. The RL01/02 one connects only those used
> by the RL drives. I doubt the characteristic impedance is different as the
> terminators
> are t
On 9/25/2015 12:24 PM, tony duell wrote:
>>
>>> The RK06/07 cable connects all pins. The RL01/02 one connects only those
>>> used
>>> by the RL drives. I doubt the characteristic impedance is different as the
>>> terminators
>>> are the same.
>>>
>>> -tony
>
>
>>
>> Actually, the terminators fo
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