> From: Bill Degnan
> I removed the core backplanes and returned the DD11-C to the orig
> config next to the CPU. I re-inserted cards as-was. I am not getting
> comms from the M7856.
Ugh. Not good. Does it respond on the UNIBUS? (I.e. if you try to read
the registers from the fron
There have been a lot of parallel discussions on my PDP 11/40, I am
consolidating them all here:
I now have 5 backplanes installed. Here they are, described in order. I
walked through this will Paul Anderson last night (thanks Paul!) to verify
everything was in the right place and in the right o
2016-05-24 14:50 GMT+02:00 william degnan :
> There have been a lot of parallel discussions on my PDP 11/40, I am
> consolidating them all here:
>
> I now have 5 backplanes installed. Here they are, described in order. I
> walked through this will Paul Anderson last night (thanks Paul!) to verif
>
>
>
>
> But the M9312 has bus terminating resistors (unless you actually desoldered
> those!). Then you have three terminators in your system! One in the M891 at
> the CPU, one in the M9312 in slot 3 of last DD11, and then a M930 in slot 4
> of DD11.
>
> If you want the M9312 you should put it wi
2016-05-24 15:37 GMT+02:00 william degnan :
> >
> >
> >
> >
> > But the M9312 has bus terminating resistors (unless you actually
> desoldered
> > those!). Then you have three terminators in your system! One in the M891
> at
> > the CPU, one in the M9312 in slot 3 of last DD11, and then a M930 in
>
>
>
>
> What never was clear to me was if you actually could access the serial card
> or not from the console. I.e. did it respond when addressing it? If it did
> respond I would check that there were correct power supplied to the 1488
> driver.
>
> /Mattis
>
>
>
The M9312 does yes have the termin
The DD11C was modified a while back. I also need to probe the system to
confirm what slots need a NPG grant card, make sure everything is
documented. I *think* it's slot 4 and 2 that need them, but I should
verify this vs. the manual default.
On 5/24/2016 8:37 AM, william degnan wrote:
... I fixed the core problem I
described in my email. ... Bill
B, what was the issue with the core,
that you fixed it so fast?
- J.
On Tue, May 24, 2016 at 11:17 AM, j...@cimmeri.com wrote:
>
>
> On 5/24/2016 8:37 AM, william degnan wrote:
>
>> ... I fixed the core problem I described in my email. ... Bill
>>
>
> B, what was the issue with the core, that you fixed it so fast?
>
> - J.
>
I guessed that the G114 was bad based
Since I'm an igmo about most machines before the mid-eighties (and still
fuzzy even on most of those), I'm curious about all these older machines
with front panel buttons and switches. What all did they do? You could
actually program them using the front panel right? Some of them
bootstrapped
On Tue, May 24, 2016 at 11:38 AM, Swift Griggs
wrote:
>
> Since I'm an igmo about most machines before the mid-eighties (and still
> fuzzy even on most of those), I'm curious about all these older machines
> with front panel buttons and switches. What all did they do? You could
> actually program
On Tue, May 24, 2016 at 11:36 AM, william degnan wrote:
> On Tue, May 24, 2016 at 11:17 AM, j...@cimmeri.com wrote:
>> B, what was the issue with the core, that you fixed it so fast?
>
> I guessed that the G114 was bad based on a hunch.
>
> I had a spare.
Q. How do you know the guy on the side o
On 05/24/2016 10:38 AM, Swift Griggs wrote:
Since I'm an igmo about most machines before the mid-eighties (and still
fuzzy even on most of those), I'm curious about all these older machines
with front panel buttons and switches. What all did they do? You could
actually program them using the fron
Here are the binaries for all the EPROMs on processor PCA for my 7596A. The
PCA part number is 07595-60100 and is different from the one in the manual
which is a 07595-60200 so I assume my PCA is older than the one in the
manual.
The EPROMs on the PCA are as follows:
17225-18001 U26
17225-1
I have it on good authority that Dazzlemation,
recreated source code here:
http://wsudbrink.dyndns.org:8080/dazzler.html
was initially written on paper and then toggled
in on the front panel of an Altair. Whether
that is entirely true, I'm not sure, but evidence
in the code clearly shows that it
On Tue, May 24, 2016 at 10:25 AM, David Collins
wrote:
> Here are the binaries for all the EPROMs on processor PCA for my 7596A. The
> PCA part number is 07595-60100 and is different from the one in the manual
> which is a 07595-60200 so I assume my PCA is older than the one in the
> manual.
I d
On Tue, May 24, 2016 at 8:38 AM, Swift Griggs wrote:
>
> Since I'm an igmo about most machines before the mid-eighties (and still
> fuzzy even on most of those), I'm curious about all these older machines
> with front panel buttons and switches. What all did they do? You could
> actually program
On Tue, 24 May 2016, william degnan wrote:
> Here's a power point pres I did at VCF-E4, this will get you started.
> Using Altair 680b front panel in basic terms is covered a few slides in.
> http://vintagecomputer.net/vcf4/How_to_Session/
There are some nice clean photos in that presentation. S
On 2016-May-24, at 8:38 AM, Swift Griggs wrote:
> Since I'm an igmo about most machines before the mid-eighties (and still
> fuzzy even on most of those), I'm curious about all these older machines
> with front panel buttons and switches. What all did they do?
Primary front-panel operations were
On Tue, 24 May 2016, Jon Elson wrote:
> The PDP-5 I did a fair bit of work on needed a bootstrap program loaded
> in from switches, it had no internal ROM for that.
How long did it usually take to do it?
> And, whenever a program crashed, it generally wiped the entire contents
> of memory, so t
> The improved reliablity of LSI logic over discrete and SSI, and the creation
> of ROM chips of reasonable capacity (to hold the bootstrap or a monitor),
> would bring about the demise of the blinkenlight front panel.
> Note that only a couple of the first microcomputers had blinkenlight front
On Tue, May 24, 2016 at 9:25 AM, Swift Griggs wrote:
> On Tue, 24 May 2016, william degnan wrote:
> > Here's a power point pres I did at VCF-E4, this will get you started.
> > Using Altair 680b front panel in basic terms is covered a few slides in.
> > http://vintagecomputer.net/vcf4/How_to_Sessi
On Tue, 24 May 2016, Charles Anthony wrote:
> "Older machines" covers a lot of ground.
Sorry, I should have said "machines from the 50's - 70's which used
buttons, toggles, rockers or other switches on the front panel"
> Typically, there was a set of data switches (0/1 toggles) that could be
Swift Griggs wrote:
> Machine Language Using a Program Listing Using Toggle Switches". That's
> pretty hard core. I'm surprised they didn't at least use component
> displays with LEDs to show the values rather than reading it straight
> off some blinkenlights.
It's much easier to tell if you have
On 05/24/2016 11:32 AM, Swift Griggs wrote:
On Tue, 24 May 2016, Jon Elson wrote:
The PDP-5 I did a fair bit of work on needed a bootstrap program loaded
in from switches, it had no internal ROM for that.
How long did it usually take to do it?
We had contests, I think some people got under 15 s
On 05/24/2016 11:34 AM, William Donzelli wrote:
The improved reliablity of LSI logic over discrete and SSI, and the creation of
ROM chips of reasonable capacity (to hold the bootstrap or a monitor), would
bring about the demise of the blinkenlight front panel.
Note that only a couple of the fi
I wrote:
> Swift Griggs wrote:
> > Machine Language Using a Program Listing Using Toggle Switches".
> > That's pretty hard core. I'm surprised they didn't at least use
> > component displays with LEDs to show the values rather than
> > reading it straight off some blinkenlights.
>
> It's much easi
On Tue, 24 May 2016, Charles Anthony wrote:
> Honeywell 6180 display panels:
> http://jimsoldtoys.blogspot.com/2016/03/honeywell-6180-system-maintenance-panel.html
Holy rocker switch, Batman! Is that all for one machine? That looks like a
man-machine interface to run a nuclear power plant or som
On Tue, 24 May 2016, Jon Elson wrote:
> The early PDP-11s had a diode matrix ROM for the boot memory. You could
> change the boot code with a wire cutter and soldering iron.
Is that similar to "wire wrap" ? I remember my grandmother talking about
having to snip wires connected to diodes. I thin
Most early machines had core memory. If they hadn't crashed
crashed it, the bootstrap was still in memory. I crash my
core regularly.
Dwight
From: cctalk on behalf of Swift Griggs
Sent: Tuesday, May 24, 2016 9:54:17 AM
To: General Discussion: On-Topic a
On Tue, May 24, 2016 at 9:44 AM, Swift Griggs wrote:
>
> It probably still impressed the suits when they walked the data center.
> I've done data center tours with row after row of HP or Dell x86 servers
> and it's not much to look at.
>
>
Definitely.
Several OSes would show distinctive 'idle' p
On 5/24/16 9:34 AM, William Donzelli wrote:
> The demise was really about money. All those lights, switches, wiring,
> metalwork, etc. for a full panel was EXPENSIVE.
>
And the functionality could be replaced by scan chains connected to a small
computer
so you still had all the visibility w/o
>>> The PDP-5 I did a fair bit of work on needed a bootstrap program
>>> loaded in from switches, it had no internal ROM for that.
>> How long did it usually take to do it?
> We had contests, I think some people got under 15 seconds.
> All from memory, of course!
I don't think I ever used a PDP-5,
On Tue, May 24, 2016 at 9:34 AM, William Donzelli
wrote:
> > The improved reliablity of LSI logic over discrete and SSI, and the
> creation of ROM chips of reasonable capacity (to hold the bootstrap or a
> monitor), would bring about the demise of the blinkenlight front panel.
> > Note that only
The switches on, say, an IBM 1401 and 1620 were negligible. The lights
could tell a lot about the state of the system, however.
The CDC 6000-7000-STAR, etc. had no switches or lights.There was a
"deadstart panel" with a matrix of toggle switches whose contents were
initially used to start the
A couple of observations.
Taking the PDP-11 as a fairly typical example, the switches are "data" and
"address". While running, the data switches were visible to the software, and
could do something if you wanted to (typically this wasn't done). When
stopped, you could set an address in the ad
On 2016-May-24, at 9:54 AM, Swift Griggs wrote:
> On Tue, 24 May 2016, Charles Anthony wrote:
>> Honeywell 6180 display panels:
>> http://jimsoldtoys.blogspot.com/2016/03/honeywell-6180-system-maintenance-panel.html
>
> Holy rocker switch, Batman! Is that all for one machine? That looks like a
>
On 2016-05-24 1:54 PM, Swift Griggs wrote:
On Tue, 24 May 2016, Charles Anthony wrote:
Honeywell 6180 display panels:
http://jimsoldtoys.blogspot.com/2016/03/honeywell-6180-system-maintenance-panel.html
Holy rocker switch, Batman! Is that all for one machine? That looks like a
man-machine inter
On 2016-May-24, at 9:34 AM, William Donzelli wrote:
>> The improved reliablity of LSI logic over discrete and SSI, and the creation
>> of ROM chips of reasonable capacity (to hold the bootstrap or a monitor),
>> would bring about the demise of the blinkenlight front panel.
>> Note that only a co
On Tue, May 24, 2016 at 9:56 AM, Swift Griggs wrote:
> On Tue, 24 May 2016, Jon Elson wrote:
> > The early PDP-11s had a diode matrix ROM for the boot memory. You could
> > change the boot code with a wire cutter and soldering iron.
>
> Is that similar to "wire wrap" ? I remember my grandmother
Those aren't LED's on the Apollo display. They are EL's (Electro
Luminescent displays). Each segment of each digit was controlled by a
relay. They astronauts eventually got use to the tinkling sound of the
relays.
In fact the entire console panel of the command module was a giant EL,
covered mo
On 05/24/2016 10:25 AM, Charles Anthony wrote:
> Very good for prototyping, automated wirewrapping was for some
> production.
There was also automated "stapled wire". I forget the name for the process.
I still prototype projects where I'm not entirely sure of what I'm after
using wirewrap. It
On 5/24/2016 9:56 AM, Swift Griggs wrote:
On Tue, 24 May 2016, Jon Elson wrote:
The early PDP-11s had a diode matrix ROM for the boot memory. You could
change the boot code with a wire cutter and soldering iron.
Is that similar to "wire wrap" ? I remember my grandmother talking about
having
It was thus said that the Great Swift Griggs once stated:
> On Tue, 24 May 2016, william degnan wrote:
> > Here's a power point pres I did at VCF-E4, this will get you started.
> > Using Altair 680b front panel in basic terms is covered a few slides in.
> > http://vintagecomputer.net/vcf4/How_to_
On 05/24/2016 11:00 AM, jwsmobile wrote:
> Diode boards were one form of read only storage in systems. Another
> was the IBM and other's capacitance system.
...and the "transformer" ROS used on the 360/40 (and others).
--Chuck
It was thus said that the Great Swift Griggs once stated:
> On Tue, 24 May 2016, Charles Anthony wrote:
> > The data switches would be examined by the operating system during boot
> > to enable debugging (pause at certain points during boot, eg).
>
> I wish OS's still had something like this som
On 5/24/16 10:44 AM, Chuck Guzis wrote:
> There was also automated "stapled wire". I forget the name for the process.
>
stitch wire
you spot weld to a socket post
> On May 24, 2016, at 2:07 PM, Chuck Guzis wrote:
>
> On 05/24/2016 11:00 AM, jwsmobile wrote:
>
>> Diode boards were one form of read only storage in systems. Another
>> was the IBM and other's capacitance system.
>
> ...and the "transformer" ROS used on the 360/40 (and others).
You mean "C
On Tue, May 24, 2016 at 12:25 PM, Paul Koning wrote:
>> On May 24, 2016, at 2:07 PM, Chuck Guzis wrote:
>> ...and the "transformer" ROS used on the 360/40 (and others).
> You mean "Core rope memory"?
IBM's TROS and Core Rope Memory use the same principle, but the
physical construction is signifi
On Tue, 24 May 2016, Brent Hilpert wrote:
> I think one of the most impressive front panels is that of the IBM 360/91:
> http://www.columbia.edu/cu/computinghistory/36091.html
Ha! I was looking at that and I said to myself "This looks like something
that'd have been at NASA during the Apoll
On Tue, 24 May 2016, Marc Howard wrote:
> Those aren't LED's on the Apollo display. They are EL's (Electro
> Luminescent displays). Each segment of each digit was controlled by a
> relay. They astronauts eventually got use to the tinkling sound of the
> relays.
Is that the same as the EL tha
On Tue, May 24, 2016 at 12:58 PM, Swift Griggs wrote:
> Is that the same as the EL that was used in the 1980's on lots of old
> stereo gear ? Ie.. you'd hit rewind and some little backlit
> glass-and-silkscreen template would say "Rewind" in blue or green or etc..
Those were typically vacuum fluo
I used to have a notebook of toggle in programs for the PDP8s and PDP11s,
but it seems to be lost forever.
Not being a software person it takes me hours to write and debug the
simplest routines. Is there a site with a list of toggle in maintenance
programs?
On Tue, May 24, 2016 at 11:23 AM, Charl
On 05/24/2016 11:22 AM, Al Kossow wrote:
>
>
> On 5/24/16 10:44 AM, Chuck Guzis wrote:
>
>> There was also automated "stapled wire". I forget the name for the
>> process.
>>
>
> stitch wire
>
> you spot weld to a socket post
Yes, but there was a trademarked name for the process that slips
On 05/24/2016 11:39 AM, Eric Smith wrote:
> On Tue, May 24, 2016 at 12:25 PM, Paul Koning
> wrote:
>>> On May 24, 2016, at 2:07 PM, Chuck Guzis
>>> wrote: ...and the "transformer" ROS used on the 360/40 (and
>>> others).
>> You mean "Core rope memory"?
>
> IBM's TROS and Core Rope Memory use the
On Tue, May 24, 2016 at 1:08 PM, Chuck Guzis wrote:
> Yes, but there was a trademarked name for the process that slips my
> mind. Capable of very high densities.
Multiwire?
On 2016-May-24, at 11:58 AM, Swift Griggs wrote:
> On Tue, 24 May 2016, Marc Howard wrote:
>> Those aren't LED's on the Apollo display. They are EL's (Electro
>> Luminescent displays). Each segment of each digit was controlled by a
>> relay. They astronauts eventually got use to the tinkling s
Hi all --
I'm working on restoring a VAX-11/730 at the museum and things have been going
pretty well thus far. I've been bootstrapping the console and diagnostics from
simulated TU58 (images from: https://github.com/NF6X/VAX-11-730-Console-v57).
All of the TU58-based diagnostics are passing.
On 2016-May-24, at 12:08 PM, Chuck Guzis wrote:
> On 05/24/2016 11:22 AM, Al Kossow wrote:
>>
>> On 5/24/16 10:44 AM, Chuck Guzis wrote:
>>
>>> There was also automated "stapled wire". I forget the name for the
>>> process.
>>
>> stitch wire
>>
>> you spot weld to a socket post
>
> Yes, but t
On Tue, May 24, 2016 at 10:00 AM, Charles Anthony <
charles.unix@gmail.com> wrote:
>
>
> On Tue, May 24, 2016 at 9:44 AM, Swift Griggs
> wrote:
>
>>
>> It probably still impressed the suits when they walked the data center.
>> I've done data center tours with row after row of HP or Dell x86 s
On 05/24/2016 12:18 PM, Brent Hilpert wrote:
> EL (Electro-luminescent) is another technology that more-directly
> excites the phosphor with an AC supply. No vacuum bottle or hot
> filament. Nowhere near as prevalent as VF.
You still see them in military/aerospace applications. Planar used to be
On 05/24/2016 12:15 PM, Eric Smith wrote:
> On Tue, May 24, 2016 at 1:08 PM, Chuck Guzis
> wrote:
>> Yes, but there was a trademarked name for the process that slips
>> my mind. Capable of very high densities.
>
>
> Multiwire?
That sounds familiar!
--Chuck
On Tue, May 24, 2016 at 12:27 PM, Josh Dersch
wrote:
> Hi all --
>
> I'm working on restoring a VAX-11/730 at the museum and things have been
> going pretty well thus far. I've been bootstrapping the console and
> diagnostics from simulated TU58 (images from:
> https://github.com/NF6X/VAX-11-7
On 2016-May-24, at 11:39 AM, Eric Smith wrote:
> On Tue, May 24, 2016 at 12:25 PM, Paul Koning wrote:
>>> On May 24, 2016, at 2:07 PM, Chuck Guzis wrote:
>>> ...and the "transformer" ROS used on the 360/40 (and others).
>> You mean "Core rope memory"?
>
> IBM's TROS and Core Rope Memory use the
The IBM 1800 was a much simpler machine than the IBM 360/370, yet it had a
pretty complex front panel -
http://www.dvq.com/1800/photos/paneln.JPG
... since not all of the registers could be displayed at the same time .
- Original Message -
From: "Paul Berger"
To: cctalk@classiccmp.or
I realised the attachments wouldn't show in the general email but I figured the
only people who needed the binaries right now were the original posters who got
them directly from the email.
I'll put up the binaries of my EPROMs and the ones of yours when you post them
as downloads in the muse
On Wed, May 25, 2016 at 7:27 AM, Josh Dersch
wrote:
> Hi all --
>
> I'm working on restoring a VAX-11/730 at the museum and things have been
> going pretty well thus far. I've been bootstrapping the console and
> diagnostics from simulated TU58 (images from:
> https://github.com/NF6X/VAX-11-73
On 23 May 2016 at 13:25, Torfinn Ingolfsen wrote:
> On Sun, May 22, 2016 at 2:00 PM, Mattis Lind wrote:
>>
>> Isn't it possible to run dosemu on FreeBSD? I use imdv in dosemu on Linux.
>
> Unfortunately, dosemu only works on i386, not amd64.
Is that a *BSD thing? I run DOSemu on both my x86-64
We bought a Multiwire job on our clone of the Microdata 1600 and the
tech it used, I think, was welded wires laid in muck that was soft.
They would fab up a firm carrier board with all the thru-holes set, then
put down a soft pliable layer of epoxy(??). They would weld one of the
wires to an
Hello,
On Tue, May 24, 2016 at 10:24 PM, Liam Proven wrote:
> On 23 May 2016 at 13:25, Torfinn Ingolfsen wrote:
>> On Sun, May 22, 2016 at 2:00 PM, Mattis Lind wrote:
>>>
>>> Isn't it possible to run dosemu on FreeBSD? I use imdv in dosemu on Linux.
>>
>> Unfortunately, dosemu only works on i3
On 22 May 2016 at 04:52, Guy Sotomayor Jr wrote:
> Because the 808x was a 16-bit processor with 1MB physical addressing. I
> would argue that for the time 808x was brilliant in that most other 16-bit
> micros only allowed for 64KB physical.
Er, hang on. I'm not sure if my knowledge isn't good e
> On 5/24/2016 12:15 PM, Eric Smith wrote:
>> On Tue, May 24, 2016 at 1:08 PM, Chuck Guzis wrote:
>>> Yes, but there was a trademarked name for the process that slips my
>>> mind. Capable of very high densities.
>>
>> Multiwire?
On 2016-May-24, at 1:26 PM, jwsmobile wrote:
> We bought a Multi
Here's a link to the files I have. I'll update this with the additional
images from Ethan when they are available and put a front end to the files
in the museum.
http://www.hpmuseum.net/software/7595Afirmware.zip
David Collins
-Original Message-
From: David Collins [mailto:davidk.col
On Tue, May 24, 2016 at 1:49 PM, Brent Hilpert wrote:
> We were discussing this last year, perhaps I'm being pedantic but I would
> note that while, as you say, there is commonality of principle in use of
> induction and the selective weave to represent the data, TROS and core rope
> (of the so
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Glen Slick
> Sent: Tuesday, May 24, 2016 12:48 PM
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: VAX-11/730 and Emulex UC17 woes
>
> On Tue, May 24, 2016 at 12:27 PM, Josh Ders
Without an MMU or a segmentation scheme, 16-bits = 64K.
The 68000 is not a 16-bit processor, it's 32-bit, and exposed (ISTR) a 24-bit
address.
20-bits = 1M addresses, 24-bits = 16M addresses.
You're confusing data bus width (8-bit) with address bus width (16-bit).
- Original Message -
On 2016-May-24, at 1:49 PM, Eric Smith wrote:
> On Tue, May 24, 2016 at 1:49 PM, Brent Hilpert wrote:
>> We were discussing this last year, perhaps I'm being pedantic but I would
>> note that while, as you say, there is commonality of principle in use of
>> induction and the selective weave to r
On 22 May 2016 at 04:52, Guy Sotomayor Jr wrote:
Because the 808x was a 16-bit processor with 1MB physical addressing. I
would argue that for the time 808x was brilliant in that most other 16-bit
micros only allowed for 64KB physical.
Whether 8088 was an "8 bit" or "16 bit" processor depends
On Wed, May 25, 2016 at 8:58 AM, Josh Dersch
wrote:
> Interesting, the UC17 has the same firmware version (G143R) on the label of
> the EPROM. I wonder if the contents are identical. Could you send me a dump
> of your ROM so I can compare?
>
>>
>> I dumped the memory for this code from the VA
It was thus said that the Great Liam Proven once stated:
> On 22 May 2016 at 04:52, Guy Sotomayor Jr wrote:
> > Because the 808x was a 16-bit processor with 1MB physical addressing. I
> > would argue that for the time 808x was brilliant in that most other 16-bit
> > micros only allowed for 64KB p
On 2016-05-24 4:13 PM, Chuck Guzis wrote:
On 05/24/2016 11:39 AM, Eric Smith wrote:
On Tue, May 24, 2016 at 12:25 PM, Paul Koning
wrote:
On May 24, 2016, at 2:07 PM, Chuck Guzis
wrote: ...and the "transformer" ROS used on the 360/40 (and
others).
You mean "Core rope memory"?
IBM's TROS and
Hi
My main system a VAX 4000 Model 500 with a KA680 CPU has just
started halting at test 51 on power up.
Does any body know where I can lay my hands on a spare KA680?
Rod
On Tue, 24 May 2016, Fred Cisin wrote:
> (OB_Picky: Due to the overlap of segment and offset, on machines that had 21
> address bits, real mode actually had a maximum of 1114096 (10FFF0h) bytes,
> instead of 1048576 (10h).
This was always the biggest pustule on the facade of x86 to me. Gate A
It was thus said that the Great Fred Cisin once stated:
> On 22 May 2016 at 04:52, Guy Sotomayor Jr wrote:
> >Because the 808x was a 16-bit processor with 1MB physical addressing. I
> >would argue that for the time 808x was brilliant in that most other 16-bit
> >micros only allowed for 64KB physi
On Tue, May 24, 2016 at 2:29 PM, Rod Smallwood
wrote:
> Hi
>
> My main system a VAX 4000 Model 500 with a KA680 CPU has just started
> halting at test 51 on power up.
>
> Does any body know where I can lay my hands on a spare KA680?
>
A month ago this one went by cheap enough on eBay at $50 t
On Tue, 24 May 2016, Swift Griggs wrote:
It probably still impressed the suits when they walked the data center.
I've done data center tours with row after row of HP or Dell x86 servers
and it's not much to look at.
-Swift
It's true, modern computers are pretty dull to look at, but you ca
On Tue, May 24, 2016 at 3:28 PM, Chuck Guzis wrote:
> On 05/24/2016 12:15 PM, Eric Smith wrote:
>> On Tue, May 24, 2016 at 1:08 PM, Chuck Guzis
>> wrote:
>>> Yes, but there was a trademarked name for the process that slips
>>> my mind. Capable of very high densities.
>>
>> Multiwire?
>
> That so
On Tue, 24 May 2016, Swift Griggs wrote:
This was always the biggest pustule on the facade of x86 to me. Gate A20
and other chicanery was nasty business. It always struck me as a hardware
hack to work around earlier bad design.
to work around earlier LIMITED design.
IFF 64K is reasonable for yo
> On May 24, 2016, at 1:29 PM, Liam Proven wrote:
>
> On 22 May 2016 at 04:52, Guy Sotomayor Jr wrote:
>> Because the 808x was a 16-bit processor with 1MB physical addressing. I
>> would argue that for the time 808x was brilliant in that most other 16-bit
>> micros only allowed for 64KB physic
On 24 May 2016 4:45 pm, "Ethan Dicks" wrote:
>
> On Tue, May 24, 2016 at 11:36 AM, william degnan
wrote:
> > On Tue, May 24, 2016 at 11:17 AM, j...@cimmeri.com wrote:
> >> B, what was the issue with the core, that you fixed it so fast?
> >
> > I guessed that the G114 was bad based on a hunch.
>
On Tue, 24 May 2016, Sean Caron wrote:
> It's true, modern computers are pretty dull to look at, but you can
> still find some stunning views in the data center from time to time.
Heh, that would be when the sales girls come walking through doing client
tours on Fridays while one of us geeks is
> On May 24, 2016, at 2:32 PM, Swift Griggs wrote:
>
> On Tue, 24 May 2016, Fred Cisin wrote:
>> (OB_Picky: Due to the overlap of segment and offset, on machines that had 21
>> address bits, real mode actually had a maximum of 1114096 (10FFF0h) bytes,
>> instead of 1048576 (10h).
>
> This
On Tue, 24 May 2016, Guy Sotomayor Jr wrote:
> The initial implementation of the A20 gate was implemented by the
> keyboard controller(!) because it was discovered late in the PC AT
> development cycle and we couldn?t add more logic to the board (but we
> could add some wires).
That's very bizz
> On May 24, 2016, at 3:10 PM, Swift Griggs wrote:
>
> On Tue, 24 May 2016, Guy Sotomayor Jr wrote:
>> The initial implementation of the A20 gate was implemented by the
>> keyboard controller(!) because it was discovered late in the PC AT
>> development cycle and we couldn?t add more logic to
On 05/24/2016 02:21 PM, Paul Berger wrote:
> The CROS cards used in a 360/30 where the same size as an 80 column
> card on purpose so you could you a keypunch machine to program the
> microcode.
But I believe that the CROS cards were mylar, no?
--Chuck
On 05/24/2016 02:52 PM, Ethan Dicks wrote:
> So if not Multiwire, perhaps Unilayer. They are similar but visibly
> distinguishable.
Hitachi Chemical still seems to be active in this area:
http://www.hitachi-chemical.com/products_pwb_05.htm
--Chuck
On 2016-05-24 7:44 PM, Chuck Guzis wrote:
On 05/24/2016 02:21 PM, Paul Berger wrote:
The CROS cards used in a 360/30 where the same size as an 80 column
card on purpose so you could you a keypunch machine to program the
microcode.
But I believe that the CROS cards were mylar, no?
--Chuck
Ye
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mike Ross
> Sent: Tuesday, May 24, 2016 2:15 PM
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: VAX-11/730 and Emulex UC17 woes
>
> On Wed, May 25, 2016 at 8:58 AM, Josh Dersch
On Wed, May 25, 2016 at 11:03 AM, Josh Dersch
wrote:
*another snip*
> Thanks. Glen sent me his dump and I compared with mine. I have the same
> three differences:
>
> D 02A0 01200880 // 0100F308
> D 02BC 0014688F // FFF4688F
> D 02C0 65B45520 // 65B45500
>
> (commented value
On Tue, May 24, 2016 at 9:44 AM, Swift Griggs wrote:
> On Tue, 24 May 2016, Charles Anthony wrote:
> > "Older machines" covers a lot of ground.
>
> Sorry, I should have said "machines from the 50's - 70's which used
> buttons, toggles, rockers or other switches on the front panel"
>
> > Typic
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