Tue, Oct 6, 2015 at 12:00 PM, Al Kossow wrote:
>> On 10/6/15 9:31 AM, Jay Jaeger wrote:
>>>
>>> Those look like the normal narrow slides DEC typically used
>>
>>
>> DEC used Chassis-Trak slides, still made by General Devices, and are not
>> difficult to find.
>>
>> http://www.ebay.com/itm/221719800397
>>
>>
>>
>
>
>
Something does not quite add up. A 3480 is a tape subsystem, not a CPU
("server") - it would not have have disk drives.
See https://en.wikipedia.org/wiki/IBM_3480_Family
JRJ
On 10/7/2015 8:59 PM, Cindy Croxton wrote:
> My Chicago buddy has an entire IBM 3480 system, server and storage. The
> s
On 10/7/2015 4:52 PM, william degnan wrote:
> It should be easy enough to install on a test system, check the address
> space where typical bootstraps go, see what's there, etc. Thanks.
>
But one ought to first check whether the board is intended for a UNIBUS
or Q-Bus system!
JRJ
I was able to see the photos just fine - but I also use Google Drive.
But if it was created as a share (read only) by URL, it ought to work
for everyone.
JRJ
On 10/9/2015 2:51 PM, Jim Carpenter wrote:
> On Fri, Oct 9, 2015 at 3:34 PM, Cindy Croxton wrote:
>>
>> More pictures have been uploaded.
Quite a piece of work. I hope you can continue to plug away at it.
I get that bit about mistakes. Even my simple PIC-based Documation card
reader interface board had a mistake (fortunately, one I could easily
fix without having to create a new board). Fortunately, my Mark-8
boards ended up mist
Do U17,U15,U10,U6 perhaps have some solder bridges, or is that just some
flux hanging around?
JRJ
On 10/9/2015 8:38 PM, John Wilson wrote:
> This may never see the light of day (if the prototype turns out to be
> stillborn) but it's pretty and I can't resist posting a pic before I've
> powered it
On 10/9/2015 9:58 PM, John Wilson wrote:
> On Fri, Oct 09, 2015 at 09:48:18PM -0500, Jay Jaeger wrote:
>> Do U17,U15,U10,U6 perhaps have some solder bridges, or is that just some
>> flux hanging around?
>
> It's flux, but thanks for the heads-up! I went over everything
On 10/9/2015 10:42 PM, Josh Dersch wrote:
>
> Capacitor C4 looks to be involved with the START-UP DRIVE signal
> circuitry (which drives the relay) so the behavior I'm seeing makes
> sense if C4 died and took a couple of things with it (or if something
> else died and took C4 with it).
>
> Here's
On 10/11/2015 9:42 AM, Michael Thompson wrote:
>
> We are running out of things to try for debugging the TC12 controller in
> the PDP-12. At this point we are really stumped as to why the TC12 doesn't
> work correctly. We are going to try a few remaining ideas like running the
> TC12 from a labora
On 10/12/2015 12:40 PM, Michael Thompson wrote:
>>
>> Date: Sun, 11 Oct 2015 18:44:54 -0500
>> From: Jay Jaeger
>> Subject: Re: PDP-12 Restoration at the RICM
>>
>> Don't forget about the other more remote possibilities: cables,
>> backplane, bad
On 10/13/2015 12:02 AM, tony duell wrote:
>
>>
>> Paul, if you come across any VT52s that have the built-in screen
>> printer could you take some pictures please.
>>
>> Has anyone ever seen one? I had an idea it used a silvered-paper and
>> burned it off? or am I mis-remembering.
>
> I have one.
On 10/12/2015 5:12 PM, Brad wrote:
>
> I'm currently working on a replica of Don Lancaster's prototype TV
> Typewriter (pic here:
> http://s1381.photobucket.com/user/unclefalter/media/20151011_125748_zpssu7yy
> ujf.jpg.html?o=0 ) and I was wondering - does anyone know where the unit
> that appear
On 10/13/2015 10:52 AM, Brad wrote:
> Cool, Jay! Was your keyboard one of the 40 or so that Don re-assembled and
> offered? Or is it still in stock form?
>
Mine is "original", as ordered from wherever the article said to get
them, back in the 70's.
I think one or two of the round pieces got lo
On 10/13/2015 5:08 PM, Jay West wrote:
> Pictures of the S/130 system I'm building up are at
> https://www.flickr.com/photos/131070638@N02
>
> I think the last I posted here... the cpu was up and running, that was the
> first piece I refurbished. I took everything out of the rack and cleaned
> tha
On 10/13/2015 2:47 PM, Ethan Dicks wrote:
> On Tue, Oct 13, 2015 at 2:13 PM, Henk Gooijen
> wrote:
>> I'd love to get one complete RK11-C ... anybody? :-)
>
> I have an RK11-C but it did not come with a panel. Also, I've never
> attempted to fire it up, so I'm sure it needs a round of
> cleani
On 10/13/2015 7:04 PM, Jay Jaeger wrote:
> On 10/13/2015 5:08 PM, Jay West wrote:
>
> More to follow related to my hardware and software inventory, but I just
> got called to dinner.
>
> JRJ
>
Jay (West): FYI, my Nova 4 has the later "Eclipse" series hard d
On 10/14/2015 11:59 AM, Henk Gooijen wrote:
> -Oorspronkelijk bericht- From: Jay West Sent: Wednesday, October
>
>> It would seem that DG didn't believe in anything plugging in to
>> interface boards. Instead, interface boards went in the cpu with no
>> external connectors. Then you wirewr
On 10/14/2015 1:12 PM, Mouse wrote:
>> The hardest part is finding parts for the FPGA, sure I can use 74XXX
>> but was it out in 1975-76?
>
> If you mean some specific 74-series part, well, it depends on which
> one.
>
> But, if you mean 74-series logic in general, I think so. Sometime
> within
On 10/14/2015 3:56 PM, Chuck Guzis wrote:
> On a sudden impulse, I put in a bid for an HP1663A logic analyzer for
> $30 and won for $29. Just got the thing--it's essentially in like-new
> condition--not even a scratch, no CRT burn and comes with the original
> set of pods and grabbers. Not so muc
I could spare one - but probably only one.
JRJ
On 10/14/2015 4:17 PM, Jay West wrote:
> I found a company selling new 8" 32-sector hard sector floppies.
>
> http://www.athana.com/html/diskette.html Item # 47-0801
>
> They want $150 per box of 10. That's a pretty hefty pricetag... but in the
>
On 10/14/2015 3:44 PM, shad wrote:
> Then I developed a tool to connect it to PC via serial, using the
> console port;
> this tool is somehow similar to VTserver for PDP11 realm, but more
> expandable.
> Basically, you can do memory transfers between Nova and PC (both
> directions), and
> exec
I doubt it. They need to be very accurate, and one would not want to
open the sleeve to punch one.
JRJ
On 10/14/2015 10:39 PM, ben wrote:
> On 10/14/2015 9:39 PM, Jay Jaeger wrote:
>> I could spare one - but probably only one.
>>
>> JRJ
>>
> Did they ever make punch to make your own?
> Ben.
>
>
>
>
So, hole by hole - what about the extra hole for the index - one would need the
jig to have an extra hole for the punch for that at 1/2 spacing.
Sent from my iPad
On Oct 15, 2015, at 13:36, Dennis Boone wrote:
>> I doubt it. They need to be very accurate, and one would not want to
>> open the
I'd expect you could still read them sector by sector - an RX01 is
standard single density format.
Regardless, you can find software to image them here:
http://highgate.comm.sfu.ca/pdp8/
In particular:
http://highgate.comm.sfu.ca/pdp8/software/dumprest.tar.gz
(I had my own version of that sort
On 10/16/2015 12:47 PM, Rich Alderson wrote:
> From: Dave G4UGM
> Sent: Friday, October 16, 2015 4:01 AM
>
>> In fact DEC had little option. If they had not provided the X.25 software
>> they would have been unable to sell large machines to UK Universities as
>> support of Janet was required to ge
On 10/17/2015 3:16 PM, Henk Gooijen wrote:
> I picked up the NOVA 4 last Thursday. I had help carrying all the stuff
> (disassembled) downstairs from the attic. At home I had to unload the van
> single-handed. Went well, although I felt my back that evening ...
>
> Today, I cleaned the rack, as al
On 10/18/2015 11:48 AM, Henk Gooijen wrote:
> Thanks Rod,
>
> I feel stupid ... It would have been a simple check to see whether
> the floppy drive actually rotates the floppy [dumb, dumb, dumb].
> I did transport the disk drive very carefully ... The trip was not
> bumpy, and most of it was on a
On 10/18/2015 1:32 PM, Henk Gooijen wrote:
> Thanks Jay and Rod,
>
> you gave me a lot of pointers to check. I agree that getting
> a console working is on top of the todo list. However, I better
> put on old clothes for next Saturday. I want to have at least
> a look at the head lock and shipping
On 10/20/2015 2:45 PM, Henk Gooijen wrote:
> With thanks to Bruce, Jay and Rod, good news, although something
> has gone wrong first. Learned a few things! Long story ...
>
> As I did not see anything on the Dasher D200 terminal screen, I first
> checked the cable, assuming that the terminal did
On 10/20/2015 1:35 PM, Christian Liendo wrote:
> I found a channel that's about a Month old, but no real information as to who
> they are.
>
>
> Computer History Archives
> Educational Vintage Computer Films
> View on www.youtube.com
>
> https://www.youtube.com/channel/UCOyJD0RHtF_77_oAf5tT1
On 10/22/2015 7:54 PM, Murray McCullough wrote:
> 43 years ago around this time the Internet we use to communicate with
> was probably made possible because of TCP/IP, or Transmission Control
> Protocol/Internet Protocol created at Stanford University. Today 3
> billion people are on the net but re
On 10/23/2015 3:29 PM, Ethan Dicks wrote:
> On Fri, 23 Oct 2015, Bill Sudbrink wrote:
>
> I'd expect wide-eyed stares from a vi user... ;-)
>
>
> Q: What goes "beep beep beep"?
>
> A: A Little Nash Rambler... and a vi novice.
>
> -ethan
>
ROTFL.
JRJ
On 10/23/2015 6:43 PM, Mike Ross wrote:
> 1. A replacement perspex for a pdp-12; damaged in shipping :-(
If you mean the plexiglass for the console, I might be able to help with
that. I thought at one point I was going to get an entire PDP-12 from
U. Wisconsin Comm. Arts, but when I showed up on
On 10/23/2015 10:37 PM, Jay Jaeger wrote:
> On 10/23/2015 6:43 PM, Mike Ross wrote:
>
>> 1. A replacement perspex for a pdp-12; damaged in shipping :-(
>
> If you mean the plexiglass for the console, I might be able to help with
> that. I thought at one point I was going to
On 10/24/2015 2:21 AM, Brad wrote:
> I was checking out the Altair 8800 kit online (really cool). But I am
> hoping to one day find a kit or plans to build a Mark-8 replica, since I'm
> so deep into Radio Electronics features. I know there was a kit out there
> (Obtronix?). Was it any good? Do
Looking at the document at:
http://dustyoldcomputers.com/pdp-common/reference/drawings/peripherals/docs/DEC-08-HIEA-DA_RF08_Jun70.pdf
The picture, though extremely fuzzy, matches my panel in the
organization of legends and breaks in line. Since I have what I think
is a complete RF08, and pieces
I apparently didn't create the sharable link I intended to.
Try
https://drive.google.com/folderview?id=0B2v4WRwISEQRTkVRX2NPMThILWM&usp=sharing
JRJ
On 10/29/2015 3:28 PM, Jay Jaeger wrote:
> Looking at the document at:
>
> http://dustyoldcomputers.com/pdp-common/reference/dr
On 10/30/2015 9:42 AM, Christian Corti wrote:
> Hi all,
>
> I'm trying to set up a MicroVAX II that has an SMD disk attached to an
> Emulex QD32 controller. I need to test and/or format the disk and so I'm
> looking for images of the Emulex diagnostic floppies (should be RX50
> AFAIK). Those foun
t;
>> On 29/10/15 20:28, Jay Jaeger wrote:
>> Looking at the document at:
>>
>> http://dustyoldcomputers.com/pdp-common/reference/drawings/peripherals/docs/DEC-08-HIEA-DA_RF08_Jun70.pdf
>>
>> The picture, though extremely fuzzy, matches my panel in the
>>
On 10/30/2015 8:07 AM, Mattis Lind wrote:
> 2015-10-30 13:54 GMT+01:00 Jay Jaeger :
>
>> No, not looking for a reproduction. Just posted it in case it would help
>> folks with a possible RK11-C display panel concept.
>>
>
> Interesting. We also have a RF08 / RS08
On 11/2/2015 9:15 PM, Mike Ross wrote:
> On Tue, Nov 3, 2015 at 4:03 PM, Connor Krukosky
> wrote:
>> I recently won an IBM z890 via auction for $237.
>
> Congratulations! Mainframes are fun!
>
>> It was a very interesting adventure to retrieve this machine since it weighs
>> 1500LBS on a good da
On 11/2/2015 11:22 PM, Gary Sparkes wrote:
> I am so jealous.
>
> On Mon, Nov 2, 2015 at 11:48 PM, william degnan
> wrote:
>
Congratulations! Mainframes are fun!
>>>
>>> Thanks and yes they are :)
>>>
My XT/370 card set and P/390 card are even jealous. ;)
On 11/2/2015 11:54 PM, d...@661.org wrote:
>
> As I finally complete my Micro-Altair kit from Briel Computers, my
> thoughts turn to the question of how I can get an audio tape interface
> working on this machine.
>
> I understand that the MITS tape controller is essentially a serial port
> with
You wouldn't happen to have the side panel (the left side - that covers
the boards)? I have a GT40 that would like to have one. ;)
On 11/5/2015 4:19 AM, Joseph Lang wrote:
> I've got one. Just pay shipping and it's yours. I don't expect to ever get
> the 11/05 to go with it ;-)
>
> Joe
>
>> O
On 11/5/2015 10:55 PM, Mark J. Blair wrote:
>
>> On Nov 5, 2015, at 20:00 , jwsmobile wrote:
>>
>> He is tonight going thru LAX Mike is in New Zealand.
>
> He lives in NZ, or is just traveling there? I can't even guess how much it
> would cost to ship a System/23 from California to NZ!
>
> I
After seeing an M7706 on eBay (and realizing I already have a spare),
but no dual-port card (M7730), and reading instructions in the
maintenance manual regarding placement of a single M7706 drive interface
card in either slot, depending upon whether A or B is selected I began
to wonder...
Is there
On 11/6/2015 8:01 PM, Mark J. Blair wrote:
>
>> On Nov 6, 2015, at 17:10, Jay Jaeger wrote:
>>
>> Or tipped on end such that it would fit, similar to moving a sofa.
>
> Please don't help... I bought a small CNC mill today, and my wallet is empty.
> :-)
>
On 11/8/2015 11:50 AM, Josh Dersch wrote:
> Hi all -
>
> As noted in a mail last week, I now have my PDP-11/05 running with working
> core (8KW). I had some time last night to try loading in some "real"
> software, and I started with the PDP-11 paper-tape BASIC, which I've
> successfully loaded i
On 11/9/2015 11:53 AM, Kyle Owen wrote:
> On Mon, Nov 9, 2015 at 11:30 AM, Christian Liendo <
> christian_lie...@yahoo.com> wrote:
>>
>> I saw this and I wanted to know if anyone could tell me what computer is
>> this?
>>
>
> Looks to be a Digital Group system.
>
> Kyle
>
Sure looks like Digita
On 11/9/2015 3:42 PM, Josh Dersch wrote:
> On Mon, Nov 9, 2015 at 12:37 PM, Jay Jaeger wrote:
>
>> On 11/8/2015 11:50 AM, Josh Dersch wrote:
>>
>>>
>>> Anyone have any experience with this particular diagnostic?
>>>
>>> Thanks,
>>>
On 11/17/2015 12:06 PM, Al Kossow wrote:
> On 11/17/15 7:54 AM, et...@757.org wrote:
>> Hello,
>>
>>By any chance could someone configure the mailing list to add
>> [cctalk] or [cc] or [cct] into the beginning of the subject line?
>
> If you do this, please do the same for cctech, and make sur
On 11/17/2015 2:34 AM, rod wrote:
>
> Now to the slide switches themselves.
>
> They are mounted by the screw hole lugs having been slid into a groove
> in two aluminum bars which in turn are attached to the PCB by pillars
> and screws.
> There are six connection pins on the bottom of each swit
too expensive to get set up. So I am looking at alternatives.
>
> Rod
>
>
>
>
> On 17/11/15 18:38, Jay Jaeger wrote:
>> On 11/17/2015 2:34 AM, rod wrote:
>>> Now to the slide switches themselves.
>>>
>>> They are mounted by the screw hole
I dunno about Ed, but my usual email client (Thunderbird) does that if you use
plain text, and I haven't seen where to fix it. It is indeed annoying - for
the sender, too.
On Nov 20, 2015, at 16:06, Peter Coghlan wrote:
>>
>> Just a hit . . scanning/printing without having to go to kinkos
Basically, I expect that the complaint is that the lines have extraneous forced
new lines in them instead of just flowing and letting the recipients email
client take care of it. I use Thunderbird and noticed this behavior but I
don't yet know how to fix it either.
Sent from my iPad
> On Nov
Perhaps Oberon required something faster than the 70ns - 85ns tRC read
cycle / tWC write cycle times supported by the Micron cellular RAM
running in asynchronous mode on the Nexys 2 - presumably because the
data path is only 16 bits?
That said, most "retro" computing would, I expect, be perfectly
I used orange over black tubing designed for carrying water under
pressure from Home Depot (here in the US), and then sanded it down to a
reasonable O.D. size (IIRC). Worked great.
I don't know that the diameter is absolutely critical - I think it has
some kind of speed encoding.
On 12/2/2015 6:
- I do recall that the
fit was pretty tight.
>
> Regards
>
> Rod
>
>
>
> On 02/12/2015 15:31, Jay Jaeger wrote:
>> I used orange over black tubing designed for carrying water under
>> pressure from Home Depot (here in the US), and then sanded it down to a
In my case the roller does not distort noticeably - it was pretty stiff
material.
JRJ
On 12/2/2015 10:48 AM, Paul Koning wrote:
> I'm sorry for stirring up this hornet's nest.
>
> I actually meant to ask a real question, and the way I phrased it made a mess
> of things. The real question: fo
I rubbed it
against some sandpaper.
After the repair, I had good luck reading some Micro VAX diagnostic and
Microcode tapes.
JRJ
On 12/2/2015 12:31 PM, Paul Anderson wrote:
> Is that PEX tubing you are referring to Jay?
>
> Any one have ideas for a TU10 or other tape drive capstans?
>
But not these - PDP-11's didn't use dual-height connectors on memory.
Anyway, they are indeed PDP-15. (Whether or not they are actually MM15
I don't know). The page on the memory on the provided link indicates:
G100
G613
G614
The modules and options document on
bitsavers.org/dec/modules/module
On 12/16/2015 9:17 AM, Noel Chiappa wrote:
> > From: Brent Hilpert
>
> > I threw out a print-only selectric a few years ago ... Regret it now,
> > just because it would have been fun to figure it out. C'est la vie.
>
> I can top that.
>
> MIT offered me (as a gift) the PDP-11/45 that
On 12/16/2015 11:48 AM, Jon Elson wrote:
> On 12/16/2015 11:01 AM, Jay Jaeger wrote:
>> Anywho, I was looking at a couple of 19" racks containing an odd
>> computer of some sort. Had this funny square keyboard, and what looked
>> like LINCTapes to me. Looked kinda "h
On 12/19/2015 9:33 AM, Todd Goodman wrote:
> * Noel Chiappa [151218 17:38]:
>> > From: Brent Hilpert
>>
>> > I need to move to something newer but I haven't evaluated current
>> > schematic-drawing programs
>>
>> Dave Bridgham got me started with KiCAD, and that seems like a pretty goo
FYI, the January 2016 issue of Nuts & Volts magazine has an ESR meter.
It uses a 1ma panel meter, but of course one could substitute a resistor
and use a voltmeter or a multi-meter with a 1ma scale as well.
http://www.nutsvolts.com/magazine
(Though I see the January issue is not there yet).
It a
On 12/22/2015 9:06 PM, drlegendre . wrote:
> Ok..
>
> On Tue, Dec 22, 2015 at 4:17 PM, Jay Jaeger wrote:
>
>> FYI, the January 2016 issue of Nuts & Volts magazine has an ESR
>> meter. (...)
>>
>> (Though I see the January issue is not there yet).
>>
On 12/22/2015 7:31 PM, Michael Thompson wrote:
> Lots more work on the PDP-12 at the RICM. We got an RS-232 console board
> and baud rate generator from Vincent and now have both serial ports
> working. Warren modified Kyle's SerialDisk and we booted OS/8 from an
> emulated RK05 on the second seri
On 12/23/2015 7:18 AM, Antonio Carlini wrote:
> On 23/12/15 12:23, Jacob Ritorto wrote:
>> fwiw, Jay, I appreciated your input, followed your link and
>> subscribed, having never heard of the magazine before.. Looking
>> forward to the Jan. issue with the ESR meter stuff, which I need for
>> diagno
On 12/22/2015 10:43 PM, ste...@malikoff.com wrote:
> Back in the late 70s early 80s one of Dad's work colleagues came up with this
> circuit for interfacing
> an IBM I/O Selectric to a microcomputer. We had one, which we planned to use
> with our Fairchild/Mostek
> F8 development board, but it ne
On 12/24/2015 9:59 AM, Michael Thompson wrote:
>
> We have been able to fix all types of broken flip-chips. Sourcing the
> components is sometimes a challenge. The Germanium transistors for the TU20
> on the PDP-9 were hard to find.
>
I remember replacing a germanium (at least I think it was) t
On 12/27/2015 10:15 PM, Mark Matlock wrote:
>I have a MINC-23 that I am in the process of restoring. On the hardware
> side, I modified the BDV11 ROMs with some help from Malcolm Macleod on the
> boot eprom images so that I could boot a DU device directly from a 11/23 (not
> plus).
>
>I
On 12/29/2015 2:08 PM, Mark Matlock wrote:
> On Dec 29, 2015, at 12:00 PM, cctech-requ...@classiccmp.org wrote:
>
>> Date: Mon, 28 Dec 2015 17:51:45 -0600
>> From: Jay Jaeger
>> To: cct...@classiccmp.org
>> Subject: Re: Software for DEC MINC systems
>> Messa
On 12/29/2015 2:47 PM, Jay Jaeger wrote:
>
> I have had several folks express the desire for them. Over the day or
> few days (we have a gathering coming up tomorrow, and not sure I will
> get to it today, so it could be as late as next week), I will load them
> up on my Go
If it is DEC, and they haven't fallen off, then on the side panels on
one side or the other of the rows connectors there may be some
identification?
JRJ
On 1/10/2016 11:31 AM, Noel Chiappa wrote:
> > From: Henk Gooijen
>
> > I could not find the M5950 nor M3020 in any module list.
>
> T
Thanks for the pointer. I have an INDY with no software (well, at least
no convenient software - I have IRIX 5.22 as 3 tar.gz files.
I guess I will need to drag it out and if it still runs, get it a
simulated SCSI disk (I don't have any disks in mine).
JRJ
On 1/12/2016 2:10 PM, geneb wrote:
>
On 1/13/2016 7:15 PM, Paul Koning wrote:
> Must be. New kits, old manuals, upgrades for old kits -- at least a brief
> glance gave me a pretty positive impression.
>
> paul
>
Meh. It has taken them, like, 5 years to come out with this seriously
overpriced radio, and it isn't even supe
On 2/9/2016 3:48 PM, Ethan Dicks wrote:
> On Mon, Feb 8, 2016 at 3:31 PM, Ian S. King wrote:
>> On Mon, Feb 8, 2016 at 12:23 PM, Noel Chiappa
>> wrote:
>>> If you have an actual 11/20, you should be ecstatic! ;-)
>> Yes, its faceplate reads 'PDP-11', not 'PDP-11/20'.
>
> I am half sad. My 11/20
On 2/12/2016 5:32 PM, Jacob Ritorto wrote:
> Hi,
> Seems I have bits 4 and 3 sticking on my Clearpoint QRAM-2-SAB-1 88b
> 4MB memory in my pdp11/73.
>
> Can anyone offer hints as to how to identify which component is broken
> and how to go about repairing this?
>
> It's the only memor
On 2/13/2016 6:33 AM, Christian Corti wrote:
> On Thu, 11 Feb 2016, Christian Corti wrote:
>> I have a 7970B (-236) with options 127, 006, 007, 012 and 023.
>
> According to the HP 1000 Peripherals Selection Guide from 1982, page 16,
> option 236 specifies an 800bpi master magnetic tape subsystem
On 2/14/2016 5:36 PM, Chuck Guzis wrote:
> On 02/14/2016 02:08 PM, Jay Jaeger wrote:
>
>> I have never heard of 200bpi or 556bpi for anything other than 7
>> track. I cannot imagine why anyone would ever produce such a thing.
>> The only density I have ever heard of as b
On 2/15/2016 2:41 PM, Jon Auringer wrote:
> Hello all,
>
> I have a bunch of VAX/VMS media that need a new home. I must move them
> very soon and I have little time for shipping. Pickup from 53714
> (Madison, Wi) preferred.
>
> 16MT9:
> VMS V5.3 BIN 1/2 & 2/2 in shipping box with docs
> VMS V5.3
On 2/15/2016 3:32 PM, Jon Auringer wrote:
> Hello again,
>
> On 2016-02-15 2:41 PM, Jon Auringer wrote:
>> Hello all,
>>
>> I have a bunch of VAX/VMS media that need a new home. I must move them
>> very soon and I have little time for shipping. Pickup from 53714
>> (Madison, Wi) preferred.
>
> I
If you haven't yet found one, I have spares for the switch cover - I
have an entire console and the backplanes (with the cards) whose machine
was disassembled out from underneath them.
JRJ
On 5/10/2015 9:45 AM, Michael Thompson wrote:
> Sorry, I sent the message before I was finished.
>
> The CR
A couple of things.
Firstly, I noticed that my Mini-Pro could only read SOME of the 2716's I
had, not all of them. So, just because it read as zeros might not mean
it really is.
Secondly, there is a 2K bit Altos-related ROM available at
http://toastytech.com/files/ancientroms.html
There is a l
Long story, but
I recently acquired an Altos ACS 8000-2 with an 8100-01 mainboard (which
currently is not functioning). Acquired it on eBay where it was
represented as an ACS-8000-7, along with an Altos 8000-7A 29MB hard disk
(a Shugart 4008). The hard disk was fine, but the computer wasn't
The RL01/RL02 Users Guide (bitsavers.org/pdf/dec/disc/rl01_rl02) Figure
2-25 on page 2.35 describes the positioner restraining bracket that
should be put in place before shipping. It is just a little square
piece of metal (probably aluminum) with a single screw that holds it
down that sits in fron
In working on my ACS 8000-2, I managed to dump the ROM and started
disassembling it, and almost immediately came up with something strange
(see below). As a result, it is not surprising the machine is totally
confused.
If anyone has an Altos ACS 8000, models 1 thru 4 or 1S thru 4S, that is,
an Al
I use emulators as well, and have written some, but I also enjoy working
with the real hardware.
The Altos ACS-8000 series are all Z80's .
JRJ
On 7/10/2015 10:05 PM, wulfman wrote:
> On 7/10/2015 7:50 PM, Jay Jaeger wrote:
>> Long story, but
>>
>> I recently ac
emulators that run on a host PC that let you run old
> software
>
> i have a ZAX Z80 emulator and a Applied microsystems Z80 emulator for
> just that purpose
>
> On 7/11/2015 8:32 AM, Jay Jaeger wrote:
>> I use emulators as well, and have written some, but I also enjoy wo
f the interrupt vector there for the
CPU, so it ends up in the wrong place.
But, at least I have something to go on.
JRJ
On 7/11/2015 2:26 PM, Jay Jaeger wrote:
> In working on my ACS 8000-2, I managed to dump the ROM and started
> disassembling it, and almost immediately came up with someth
If you are missing other PDP-12 maindecs or docs, let me know - I may
well have them and would be happy to scan them.
JRJ
On 7/11/2015 8:02 PM, Michael Thompson wrote:
> J. Victor Nahigian donated some M221 and M222 boards for the processor and
> TC12 LINCtape controller. They are in pretty bad
BTW, if there are particular cards you need / are bad, in addition to
the actual PDP-12, I have the backplanes and cards for a 2nd one, so if
you need something, we could probably work something out.
JRJ
On 7/11/2015 8:02 PM, Michael Thompson wrote:
> J. Victor Nahigian donated some M221 and M22
to the SIO chip is wrong or even nonexistant. Plus, a
later chunk of code loops forever waiting for transmitter buffer empty
from the SIO chip. (Check that tomorrow).
On 7/11/2015 9:46 PM, Jay Jaeger wrote:
> An update: Although I still expect there is an issue with that loop
> count of 1
Not all EE's have the same education with regard to how semiconductors
function. When I was in school I took a class in semiconductor physics
- an entire semester on how the wee beasties function - more than most EEs.
The prof., Henry Guckel, told an interesting story about an advanced IBM
comput
Another alternative would be to build a machine up from a Field
Programmable Gate Array (e.g., the Digilent Nexys2 FPGA development
board). I recently completed an effort doing that for a 12 bit machine
we designed and built in a logic/computer design class from racks of
logic interconnected using
The PDP-11/45 had split I/D capabilities. It was not all that much
later than the 11/20 (2 years according to Wikipedia anyway).
On 7/13/2015 2:16 PM, Rich Alderson wrote:
> From: Kip Koon
> Sent: Sunday, July 12, 2015 10:52 PM
>
>> I would be most interested in finding out more about this effor
ning
>> Sent: 13 July 2015 17:03
>> To: General Discussion: On-Topic Posts
>> Subject: Re: Reproducing old machines with newer technology (Re: PDP-12 at
>> the RICM)
>>
>>
>>> On Jul 13, 2015, at 8:35 AM, Jay Jaeger wrote:
>>>
>>> A
Actually, the automated design tools will automatically flag wired or /
wired and, because they result in tying the outputs of multiple
"drivers" together.
BTW, my next project for this kind of thing is intended to be the IBM
1410. Quite a challenge. I expect it will probably take me 2-3 years
Going all the way back to at least the IBM 7090, and presumably the 709,
though I have not actually checked. The B5000 had IO processors as well.
On 7/14/2015 2:55 PM, William Donzelli wrote:
>> ...I/O processors.
>
> I do not think you can claim that the 6600 I/O processors were all
> that new.
While
there are still several 1401's our there in the wild I am aware of no
IBM 1410's anywhere, unless IBM has one squirreled away somewhere.
JRJ
On 7/14/2015 11:16 AM, ben wrote:
> On 7/14/2015 9:46 AM, Jay Jaeger wrote:
>> My work has been using structural models, at
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