I have a bunch of the originals (with packs in them) but they are showing their
age (seams splitting).
I’ll have to look at the U-Line bag to see how that works.
TTFN - Guy
> On May 11, 2016, at 3:10 PM, Jack Rubin wrote:
>
> Now that I've cleaned a stack of RK05 DECpacks, I want to keep them
soldering stuff is packed away
in the basement
of my shop and that will probably take most of next weekend to dig out.
TTFN - Guy
> On Apr 26, 2016, at 2:52 PM, Guy Sotomayor wrote:
>
> Just to let folks know that I just received the prototype boards for the
> MEM11A (FedEx just
> On Apr 30, 2016, at 6:39 AM, Diane Bruce wrote:
>
> On Fri, Apr 29, 2016 at 03:55:35PM -0700, Chuck Guzis wrote:
>> Those who claim that there's not much difference between C and assembly
>> language have never run into a true CISC machine--or perhaps they rely
>> only on libraries someone els
Just to let folks know that I just received the prototype boards for the MEM11A
(FedEx just left).
The boards look great! The parts from Digikey arrived late last week, so once
I get my soldering
station set up (new microscope and new Metcal soldering iron) I’ll start to
build a couple of board
> On Apr 22, 2016, at 5:18 AM, william degnan wrote:
>
> On Thu, Apr 21, 2016 at 7:52 PM, Guy Sotomayor wrote:
>
>> Nothing I ever heard of and I was in IBM Boca at the time and would have
>> heard
>> *something* about it.
>>
>> TTFN - Guy
>>
> On Apr 22, 2016, at 2:09 PM, Mike Stein wrote:
>
> - Original Message -
> From: "Guy Sotomayor"
> Sent: Friday, April 22, 2016 2:25 PM
> ...
>> Most companies would rather
> spend their time and budget doing things for a high ROI and for large an
> On Apr 22, 2016, at 11:03 AM, Swift Griggs wrote:
>
>
> Remember all the accelerator boards for the Mac, Amiga, and even PCs in the
> 90's ? I've often wished that I could get something similar on my older SGI
> systems. For example, fitting an R16k into an O2 or doing dynamic
> translation
Nothing I ever heard of and I was in IBM Boca at the time and would have heard
*something* about it.
TTFN - Guy
> On Apr 21, 2016, at 4:49 PM, william degnan wrote:
>
> Byte Jan 1981 page 204 refers to an IBM S-100 microcomputer system IBM
> demoed in Europe. Anyone here seen this machine or h
> On Apr 21, 2016, at 3:22 PM, Swift Griggs wrote:
>
>
> Thanks a lot for taking the time to explain that.
>
That’s why we’re here! ;-)
Thanks for listening!
TTFN - Guy
> On Apr 21, 2016, at 2:53 PM, Swift Griggs wrote:
>
> On Thu, 21 Apr 2016, Paul Berger wrote:
>> No the 3270 PC and 3270 AT where a special configuration for 3270 terminal
>> emulation it conatined a special keyboard with more keys that the normal
>> keyboard and connected to a special adapter
> On Apr 21, 2016, at 2:44 PM, Paul Berger wrote:
>
>
>
> There was definitely a XT/370 and likely an AT/370 as well the processor on
> the the 370 card in these machines was rumoured to be a modified Motorola 68K
> with special microcode to execute 370 instructions. These machines ran a
>
> On Apr 21, 2016, at 2:35 PM, Josh Dersch wrote:
>
> On Thu, Apr 21, 2016 at 2:34 PM, Ali wrote:
>
>>> Actually, the first one was called XT/370 because it plugged into an
>>> XT!
>>> Then came AT/370. Those were obviously ISA boards. Then came some
>>> variants that were microchannel. The
> On Apr 21, 2016, at 2:13 PM, Swift Griggs wrote:
>
>
> On Thu, 21 Apr 2016, Guy Sotomayor wrote:
>> Let?s not also forget the various 370 and 390 co-processor boards that
>> could be put into PC?s at various times to allow one to turn the PC into a
>> smal
There was also an 80286 coprocessor board for various VAXen.
Let’s not also forget the various 370 and 390 co-processor boards that could be
put into PC’s at various times to allow one to turn the PC into a small
mainframe
capable of running mainframe software (including the OS).
TTFN - Guy
> O
> On Apr 18, 2016, at 11:12 AM, Jim Brain wrote:
>
>
> A larger concern for me would be what is implied in the "VCF would 'run'
> it...". For instance, while I do not begrudge the VCF East config per se,
> it's tough for a combo exhibitor/vendor, and I know that's not going to
> change, as
Hi,
The board layout is complete and has passed all of the design rule checks from
the board house. I’ll be ordering some boards for me to assemble and test next
week.
I have also received a quote for “turnkey assembly” where I hand them the files
and get back fully assembled boards. In order t
> On Apr 4, 2016, at 11:07 AM, Dave Woyciesjes wrote:
>
>>
>> --
>> ... nor would I ever expect you to ;D
>>
>> IMO the reason that flowed text and top posting have become the norm
>> is that many people (myself included) find them more efficient and clearer,
>> both reading and writing;
>
> On Mar 29, 2016, at 5:50 PM, Ethan Dicks wrote:
>
> On Tue, Mar 29, 2016 at 8:25 PM, Paul Koning wrote:
>>> On Mar 29, 2016, at 8:18 PM, Guy Sotomayor wrote:
>>> ...autorouter on Eagle 7.5, so I did this all by “hand”
>>> (at just under 2000 wires it
I just finished laying out the board for the MEM11A. The last roadblock was
figuring out
where the last 3 unrouted wires were. EagleCAD didn’t make it easy to find
them and I
haven’t quite figured out how to use the autorouter on Eagle 7.5, so I did this
all by “hand”
(at just under 2000 wires
> On Mar 17, 2016, at 6:01 AM, Mattis Lind wrote:
>
>>>
>
> If one read notes in the PDP-11/04 printset it says: Do not insert a M930
> or M9302 in a MUD slot. Only in the Unibus slots or you will have short
> circuit. On the other hand it does not say that the M9301 (or M9312) cannot
> be ins
Just wanted to let folks know where the MEM11A (as opposed to the UMF11) is.
All of the verilog code is written for the CPLD and I’ve simulated full unibus
transactions
to the FRAM and everything seems to work.
I’m almost done with schematic entry. I just have a few things to clean up and
veri
> On Mar 17, 2016, at 9:15 PM, Eric Smith wrote:
>
> On Thu, Mar 17, 2016 at 3:35 PM, Guy Sotomayor wrote:
>> I’m planning on doing a 4 layer board so I can avoid having routing issues
>> due to 3 different
>> power supply voltages (yea, modern low voltage d
> On Mar 17, 2016, at 9:35 AM, Mattis Lind wrote:
>
> 2016-03-17 17:27 GMT+01:00 Guy Sotomayor :
>
>>
>>> On Mar 17, 2016, at 6:01 AM, Mattis Lind wrote:
>>>
>>>>>
>>>
>>> If one read notes in the PDP-11/04 printset
> On Mar 8, 2016, at 12:44 PM, Mike Ross wrote:
>
>>
>> No, it will only have 128KW. Since it’s a single FRAM part, I’m not going to
>> try and “stock” different flavors (especially since I’ll be having the boards
>> assembled at the board house).
>
> But you will do something to allow memory
> On Mar 8, 2016, at 11:12 AM, Henk Gooijen wrote:
>
> -Oorspronkelijk bericht----- From: Guy Sotomayor
> Sent: Tuesday, March 08, 2016 7:17 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: MEM11A questions
>
>
>> On Mar 8, 2016, at
> On Mar 8, 2016, at 10:39 AM, Jay West wrote:
>
>
> Guy wrote...
> --
> The 11/20 can address only 32KW (64KB). You need an MMU to access more.
> --
> So MEM11 doesn't have a MMU "on board" then, got it.
The MMU is a CPU function.
>
> Just curious... I seem to recall you were havin
> On Mar 8, 2016, at 10:11 AM, Henk Gooijen wrote:
>
> -Oorspronkelijk bericht----- From: Guy Sotomayor
> Sent: Monday, March 07, 2016 8:16 PM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: MEM11A questions
>
> Hi,
>
> Over the weekend I wa
> On Mar 7, 2016, at 2:06 PM, Mike Ross wrote:
>
> On Tue, Mar 8, 2016 at 10:46 AM, Guy Sotomayor wrote:
>>
>>> On Mar 7, 2016, at 1:27 PM, Mike Ross wrote:
>>>
>>> On Tue, Mar 8, 2016 at 8:16 AM, Guy Sotomayor wrote:
>>>> Hi,
>>
> On Mar 7, 2016, at 1:27 PM, Mike Ross wrote:
>
> On Tue, Mar 8, 2016 at 8:16 AM, Guy Sotomayor wrote:
>> Hi,
>>
>> Over the weekend I was looking through some old CAD files and came across my
>> original design for the MEM11A. It was an SPC board that co
Hi,
Over the weekend I was looking through some old CAD files and came across my
original design for the MEM11A. It was an SPC board that contained only 128KW
of FRAM.
I’m wondering if there’s any interest in that board. I do have to iterate on
the design
a bit but I should be able to get some
I've been simulating parts of the MEM11 FPGA since the last time I sent
out an update.
Most of my time has been writing various testcases and getting them to
work on Xilinx's
iSIM simulator.
I'm making pretty good progress and have tested a fair number of the
modules in the
MEM11 FPGA design.
Just to let everyone know, I'm making pretty good progress.
I just hit "code complete" on the FPGA. That means I've written all of the
Verilog code for the FPGA that is the heart of the MEM11. This includes
*all* of the Unibus functionality. It all synthesizes for the FPGA and
the remaining wa
Going back to the OP’s request.
I looked through my stack of RK05 packs and found a pack labelled
RT V4, DIBOL V6. It is not a DEC distribution and I haven’t checked
to see what’s actually on it (or even if the pack is any good).
While rummaging around through the various packs, I did find a cou
> On Feb 11, 2016, at 12:39 PM, William Donzelli wrote:
>
>> Indeed. RSTS/E did better, with less hardware -- 64 users on an 11/70 was
>> no problem, and earlier on you could run 16 users on an 11/20 (though not
>> all that comfortably).
>
> It all depends on what the users are doing, of cou
> On Feb 9, 2016, at 1:23 AM, Kevin Bowling wrote:
>
> I'm looking for an IBM 3290 to complement my z800 mainframe and third party
> 3174-22L establishment controller. I can't imagine these were particularly
> rare, but am sure many of them have been destroyed in the waning years
> since it tak
> On Feb 8, 2016, at 2:04 PM, Noel Chiappa wrote:
>
>
>
>> From: Ethan Dicks
>
>> I'm starting to get sorry I sold off my surplus NS8641s from Software
>> Results 20 years ago. To be fair, I did get over $4 each for them, so at the
>> time, it was a good deal for me (ISTR retail was $7.50 eve
> On Feb 8, 2016, at 1:29 PM, Ethan Dicks wrote:
>
> On Mon, Feb 8, 2016 at 4:13 PM, Guy Sotomayor wrote:
>> Anything optional will be in sockets. I’ll be putting the UNIBUS
>> transceivers
>> in sockets because I can’t afford the overage that I’d need to provid
> On Feb 8, 2016, at 1:08 PM, Ian S. King wrote:
>
>>
>> See above re: gold edge fingers. I was originally thinking that if I do
>> have to
>> split the board up, that I’d make them completely independent. But that
>> has
>> the issue of requiring 2x the number of UNIBUS transceiver parts (wh
> On Feb 8, 2016, at 1:03 PM, Ethan Dicks wrote:
>
> On Mon, Feb 8, 2016 at 3:30 PM, Guy Sotomayor wrote:
>>> On 2/8/16 10:09 AM, Guy Sotomayor wrote:
>>>> So, things are moving forward. I also wanted to get folk's opinion on
>>>> the need to
> On Feb 8, 2016, at 12:43 PM, Noel Chiappa wrote:
>
>> From: Guy Sotomayor
>
>
>> I also wanted to get folk's opinion on the need to actually produce an
>> S[P]C form factor board. ... is it OK to have the MEM11 be outside of
>> the 11/20 chassis
> On Feb 8, 2016, at 12:31 PM, Ian S. King wrote:
>
> On Mon, Feb 8, 2016 at 12:23 PM, Noel Chiappa
> wrote:
>
>>> From: Ian S. King
>>
>>> so much for running that on my PDP-11/20
>>
>> If you have an actual 11/20, you should be ecstatic! ;-)
>>
>>Noel
>>
>
> Yes, its faceplate r
On 2/8/16 11:53 AM, Al Kossow wrote:
On 2/8/16 10:09 AM, Guy Sotomayor wrote:
So, things are moving forward. I also wanted to get folk's opinion
on the need to actually produce
an SBC form factor board. In other words (and sort of in line with
how peripherals were done on the
origin
Just wanted to let folks know where I am with respect to the MEM11 project.
I had decided to take a break from writing J1 code and updating the simulator
to actually work on
the hardware.
To make things easy for myself, I decided to use my FPGA eval board and build a
daughter board
with CPLDs a
> On Feb 5, 2016, at 4:56 AM, Steven Hirsch wrote:
>
> On Thu, 4 Feb 2016, Kevin Bowling wrote:
>
>> This comes up often and usually with a lot of people that have no idea what
>> they are talking about chiming in that you are stupid for asking. They are
>> wrong, HW emulation is not that diff
> On Feb 4, 2016, at 5:32 AM, Noel Chiappa wrote:
>
>> From: Guy Sotomayor
>
>> When I have some time .. I'll fire up my 11/40 .. and then re-cable it
>> using cables with a pair of BC11A-T ends and some ribbon cable. I'll
>> run memory diagnostics o
> On Feb 4, 2016, at 12:18 AM, Jonathan Katz wrote:
>
> On Thu, Feb 4, 2016 at 9:15 AM, Jerry Kemp wrote:
>> All this AIX 1.x on Intel talk has me wanting to look at it deeper.
>>
>> Does anyone have AIX 1.3 running on VirtualBox ?
>>
>> Thanks,
>
> This was talked about a while back. The PS
I just received the BC11A-T variant boards (the ribbon cables come out the
“top”…yea not imaginative naming) this afternoon. I inserted a couple of the
ribbon cable connectors on the board and everything looks great!
When I have some time (probably in a couple of weeks) I’ll fire up my 11/40 (t
On 2/1/16 10:05 PM, Eric Smith wrote:
On Mon, Feb 1, 2016 at 9:37 PM, Guy Sotomayor wrote:
The AIX in the quote was regarding AIX for the RS/6000. The kernel for AIX
on the
RS/6000 bore no real resemblance to any other Unix kernel.
[...]
Yes, it was alien (vs traditional Unix kernels) but
On 2/1/16 8:11 PM, Eric Smith wrote:
On Mon, Feb 1, 2016 at 8:09 PM, devin davison wrote:
I really wanted to take a look at the AIX version of unix.
I don't have any of the original hardware, I assume there was a straight
unix port for the system 370,
There may be a "straight unix port" for
On 2/1/16 7:58 PM, devin davison wrote:
What machine would you recommend for the Linux route. The idea being to run
the oldest machine possible.
I was looking at AIX because it ran on one of the oldest ibm machines i
could find.
I see the big S/390 machines have pretty good linux support, but
If you want a "Unix" experience on the mainframe, the easiest/best way
at this point
is Linux.
TTFN - Guy
On 2/1/16 7:09 PM, devin davison wrote:
Darn. I figured as much as far as being licenced, but figured I would ask.
I really wanted to take a look at the AIX version of unix.
I don't have a
getting it to run in older versions of VirtualPC.
>
> Thanks!
>
> -Ben
>
>
> From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Guy Sotomayor
> [g...@shiresoft.com]
> Sent: Monday, February 01, 2016 3:16 PM
> To: Genera
> On Feb 1, 2016, at 3:10 PM, devin davison wrote:
>
> I have been messing with the Hercules emulator, and have really been
> wanting to take a look at ibm AIX, and get a working install on an emulated
> system 370. I have found no mention of install media or disk images of a
> working system fo
some
of this
stuff *is no longer manufactured*. I guess the only other way is to put such a
high
value on it (with insurance) that they sit up and take notice if it goes
missing.
TTFN - Guy
> - Original Message -----
>
> From: "Guy Sotomayor"
> To: "General
> On Feb 1, 2016, at 10:30 AM, Ken Seefried wrote:
>
> On Sun, 31 Jan 2016, Pete Lancashire wrote:
>>> On Sun, Jan 31, 2016 at 1:24 AM, Henk Gooijen
>>> wrote:
>>>
>>> Spend the extra few dollars (or what your currency is) and pack it in a
>>> very strong box. I've actually had EPROMs show up
On 1/28/16 12:52 PM, Ian Finder wrote:
Hi folks,
I recently picked up a Symbolics system built around an 8" Control Data Corp. Sabre hard drive.
Some files read when I show the FEP directory listing but many show as
"Error reading file header, wrong pkid read" which I a
> On Jan 28, 2016, at 12:52 PM, Ian Finder wrote:
>
> Hi folks,
>
> I recently picked up a Symbolics system built around an 8" Control Data
> Corp. Sabre hard drive.
> Some files read when I show the FEP directory listing but many show as
> "Error reading file header, wrong
> On Jan 27, 2016, at 11:48 AM, Ethan Dicks wrote:
>
> Sure. I've been on the support end of selling through-hole kits, but
> I wouldn't want to have to support SMD kits. I have bought and
> assembled many kits with SMD parts and have enjoyed success, but not
> everyone's builds go smoothly (a
> On Jan 27, 2016, at 11:03 AM, Ethan Dicks wrote:
>
> If you do bare boards (no connectors), I'd probably be interested in
> several sets. If you need to supply board connectors to keep your
> volume up, I'll probably still be interested but perhaps not quite as
> many sets.
>
I offer parts
> On Jan 27, 2016, at 7:48 AM, Ethan Dicks wrote:
>
>>>
>>
>> Practically, I would not want to use 60 way connectors and cable. They are
>> not as easy to get as the 40 way ones.
>
> I just did some pricing and 60-way cable is a touch pricey. Through
> cable surplus vendors, I saw one quote
> On Jan 26, 2016, at 3:03 PM, Ethan Dicks wrote:
>
> On Tue, Jan 26, 2016 at 5:46 PM, Guy Sotomayor wrote:
>> I just received the first of the BC11A paddle boards (so that I can now
>> create my own BC11A cables).
>
> Cool!
>
>> For those who’d like to k
I just received the first of the BC11A paddle boards (so that I can now create
my own BC11A cables). I made two variants of the boards. One where the cables
come out the “top” and another where the cables come out the “side” (so you
don’t have to “fold” the cable in a number of different appli
> On Jan 22, 2016, at 2:29 PM, tony duell wrote:
>
>>
>
> The M930 and BC11 should be easy to find, they are actually the same as the
> bits
> used on PDP11 Unibus connections.
>
I have had no end of problems with the *many* BC11A cables that I have (ie
they’re
bad cables). It’s the flex
I know some folks sent an email to me indicating their desire for a UA11
board but others may have waited until they arrived. The boards arrived
this week (I'm just getting to it because I was out of town on
business). They actually got here a week a head of schedule (yea!).
The price will b
> On Jan 13, 2016, at 3:01 PM, William Donzelli wrote:
>
> Er...Heathkit is long gone.
>
> However, there are at least a few car guys that might have a thing or
> two to say about the original post.
>
I agree. Kit cars are still around. ;-)
I don’t know about how easy it would be to bu
> On Jan 7, 2016, at 4:13 PM, Mouse wrote:
>
>>> I don't trust the vendor's internal security to keep the key from
>>> leaking and I don't trust the vendor's HR security to prevent
>>> malware authors from making it to the inside, and I *sure* don't
>>> trust the vendor to resist a request from
> On Jan 7, 2016, at 3:52 PM, Mouse wrote:
>
>
>>> Even if your SED doesn't have a back door or badly implemented
>>> crypto, you also have to worry about whether someone has managed to
>>> install compromised firmware on it.
>> The key here is the use of signed firmware, which I believe is the
On 1/3/16 8:35 AM, Mark Kahrs wrote:
I was wondering: Are there public CAD files (no, not the medieval
detective) for the Unibus/Q-bus fingers / board layout?
I have some layouts for Eagle CAD. They're for version 5. I'll be
upgrading to 7.5 in a few weeks.
TTFN - Guy
On 12/30/15 10:02 PM, Jim Brain wrote:
On 12/30/2015 10:51 PM, Guy Sotomayor wrote:
We're at least 2.5 miles from the DSLAM, so DSL is *not* an option.
That's the distance on the private roads and I haven't seen where the
DSLAM might be (nearest town is 5 miles away once
On 12/30/15 9:29 PM, William Donzelli wrote:
Of course! Find the exception that proves the rule!
;-) However, it would've been nice if it were only necessary to change
the capacitor!
TTFN - Guy
--
Will
On Thu, Dec 31, 2015 at 12:23 AM, Guy Sotomayor wrote:
On 12/30/15 9:
On 12/30/15 9:06 PM, William Donzelli wrote:
Sorry about digging up a slightly stale thread...
I haven't done any troubleshooting yet but checking the manuals on
Bitsavers tells me my US 3278s have ferroresonant transformers
specified as 120V 60Hz only. This can be expected to cause problems
On 12/30/15 6:52 PM, Jon Elson wrote:
On 12/30/2015 12:39 PM, Guy Sotomayor wrote:
We just dropped our POTS service last month. Our phone now is an
OOMA VoIP Office system to get the features we wanted/needed. I
haven't tried any rotary dial phones on it since I don't have any.
On 12/30/15 10:12 AM, Chuck Guzis wrote:
I read an article recently that in the US, only 8 percent of the
population relies on POTS exclusively. Currently, I'm waiting for
more upstream capacity before I can get 20Mbps DSL--right now, I'm
existing on 1.5Mbps, but the local telco did send
I
On 12/25/15 5:55 PM, Mike Ross wrote:
What about IBM channel-attached DASD?
There are various CPUs lying around in private collections and museums
- System/360s; System/370s; System/3 Model 15s; all used
channel-attached DASD: and working reliable disks are much rarer than
the damn CPUs!
It's
Hi,
I know it’s been a while (a long while) since I last posted about ordering new
UA11 boards. I just placed an order for 25 boards. To get the best price I
did a “4 week turn” which means that I should be receiving the boards by the
end of January.
I’m only doing bare boards this time, so
I’ve been tinkering around with my IBM Mainframe terminals and I’m pretty close
to having everything the way that I want it.
I currently have an IBM 3174-61R Establishment controller connecting to my
“mainframes” via TCP/IP. This allows me to not only connect to my Multiprise
3000 S/390 but al
> On Dec 18, 2015, at 12:03 PM, Paul Berger wrote:
>
>>
> The screen on the convertable is not plasma, it is a LCD screen and there
> where two versions one reflective and the other backlit. In the PS/2 days
> there where suitcase size machines with plasma displays but they only had a
> sin
No they weren't SCSI. Those were only through either a
"spock" or "tribble" MCA card. Those were the code names.
I have *no* idea what the "real" IBM designation was. ;-)
The desktop PS/2 machines (50, 50Z, 70, etc) were all
designed with robotic assembly in mind (that's why there
are no screw
> On Dec 16, 2015, at 4:19 PM, Liam Proven wrote:
>
> TIL modern Intel chipsets have a hidden SPARC core (inside Intel's
> Management Engine)
> https://recon.cx/2014/slides/Recon%202014%20Skochinsky.pdf … (2014)
>
Don’t get me started on ME. Also be careful about inferring too much from
Baytr
On 12/15/15 12:05 PM, Mike Ross wrote:
What other OSes might have native 2741 support built in, anyone know?
I would expect that IBM mainframe OS's would support it (especially
older ones). The issue there would be getting the 2741 connected up.
I have a DECWriter III with the APL option on
> On Dec 14, 2015, at 10:21 PM, Chuck Guzis wrote:
>
> Just finished reading a 9 track tape made with IBM CMS in its dumpfile format.
>
> Why on earth--or might I say, what idiot--designed this format? First the
> file data in a series of records, *then* the file name and other metadata.
>
>
> On Dec 11, 2015, at 4:43 PM, Fred Cisin wrote:
>
>>> It's a total waste of time having to re-read all the unnecessary crap
>>> many times just to get to a one sentence reply.
>
> IFF people were to be considerate and delete/trim/remove all of the
> irrelevant parts of the quoted material, th
On 11/23/15 9:11 AM, Paul Koning wrote:
On Nov 23, 2015, at 10:10 AM, David Bridgham wrote:
...
However, once we get a prototype doing something interesting, we were
talking about looking around for people interested in helping out.
We'll do a couple disk controllers but if someone wants to a
It's on my (long) list of projects. I first have to finish the MEM11.
That will have RF11/RS11s as part of the emulated devices.
I'm planning on using the J1 and associated infrastructure for my other
projects (which is why I've spent so much time getting them "right").
TTFN - Guy
On 11/22
On 11/16/15 8:21 AM, Noel Chiappa wrote:
So, I have bought a number of DS8641 bus transceivers from a source in China,
and cognizant of the claims that there are a lot of counterfeits coming from
China, how can I test them to make sure the meet specs?
I have a QBUS test board which I have cons
On 11/14/15 7:11 PM, Cory Smelosky wrote:
On Sat, 14 Nov 2015, Bob Rosenbloom wrote:
Saw this on Craigslist. Anyone interested?
I'm in SJ and have friends in Oakland...the only thing is I have no
use for just a 3174...
http://sfbay.craigslist.org/eby/zip/5311274675.html
If you get an
On 11/9/15 7:31 PM, Eric Smith wrote:
Do you have any idea why it was thought a good idea to use
edge-triggered interrupts?
I wasn’t really involved in the HW side of things but I think it was because it
was
“easier”. I think at least one device just generated a pulse for an interrupt
rathe
> On Nov 9, 2015, at 12:26 PM, Eric Smith wrote:
>
> On Thu, Nov 5, 2015 at 8:18 PM, Guy Sotomayor wrote:
>> * The expansion bus in the IBM PC was the same bus as the System/23.The
>> connector was rotated 180* so that some of the less expensive
>> cards from
On 11/5/15 6:39 PM, Mark J. Blair wrote:
Incidentally, I have an IBM System/23 for which I have not yet procured any
software. In particular, I could use whatever utility software that's necessary
to format data disks. I haven't found any online sources of disk images for
this system yet.
Excellent! Another person with an IBM Mainframe!
TTFN - Guy
TTFN - Guy
On 11/2/15 7:03 PM, Connor Krukosky wrote:
I recently won an IBM z890 via auction for $237.
It was a very interesting adventure to retrieve this machine since it
weighs 1500LBS on a good day, and well myself only clocking
> On Oct 30, 2015, at 11:35 AM, Paul Koning wrote:
>
>
>> On Oct 30, 2015, at 2:16 PM, Noel Chiappa wrote:
>>
>> ...
>> Apparently nobody had ever told them that a number in memory is... just a
>> number. At which point it became clear that they needed to know a little
>> more about how a com
> On Oct 27, 2015, at 10:34 AM, Randy Dawson wrote:
>
>
>
> If anybody ships a TTY, I recommend this: Make the box a, 3x, 4x TTY sized
> double wall cardboard box, filled with peanuts, and the TTY nestled in the
> core of the surrounding peanut cushion. They are going to shake and drop i
I wanted to let folks know what the current status is on the MEM11
project. I apologize in advance for the long post.
Previously I had mentioned that the emulator was fully functional (more
on that later) and that I was starting to debug the MEM11 firmware. I
have made significant progress and
> On Oct 8, 2015, at 2:04 PM, Cindy Croxton wrote:
>
>
> There appears to be a Z system in the photos. Image035.jpg is a photo
> showing the open system bay, and the HMC laptop. It is beyond critical
> that that laptop be carefully preserved and handled, as that will be the
> difference be
On 9/25/15 4:43 PM, dwight wrote:
Boot strapping a machine isn't impossible. It may be difficult but not
impossible.
I boot strapped a IMSAI with a "DigitalSystems" disk drive and controller.
I'll admit I did know 8080 code but I had to start from scratch on the
disk controller.
No nice little
He's going to find it rough going in trying to get the machines running
with new/empty disks. :-( It's one
of the fears that I have for my 3620 and 3640's in that I'd like to have
replacement disks but without the
manufacturing mojo, there's no way to put Genera and the bootstrap and
uCode on
On 9/17/15 8:55 PM, Jon Elson wrote:
I think the later X86 machines have a tiny block of patch microcode
that is available to the OS to put special routines into.
Certainly not Intel CPUs. All of the microcode patches are loaded via
special instruction sequences
(described in the SDM). T
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
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 o
On 9/1/15 9:45 PM, tony duell wrote:
I could, but the point is to run 1972 Unix on machine that was around
in 1972, even if I have emulate things like the RF disks.
Except that the MEM11 wasn't around in 1972.
I think the point here, is that much of the hardware that is necessary
to run Unix
On 8/31/15 10:05 AM, j...@cimmeri.com wrote:
On 8/30/2015 1:08 AM, Guy Sotomayor wrote:
The MEM11 is a multi-function memory board for Unibus based PDP-11
computers. It contains:
* 128KW memory
* Emulates console ROM & boot ROMs
* 2 SLUs (DL11s)
* KW11K
* KW11P
* KW11L
* K
301 - 400 of 448 matches
Mail list logo
