In a message dated 9/6/2016 11:55:46 P.M. US Mountain Standard Time,
pon...@update.uu.se writes:
On Tue, Sep 06, 2016 at 06:16:23PM -0700, Al Kossow wrote:
>
> I walked out of the donations meeting with the other curators today
> who thought it was a piece of s**t and didn't want to take i
On Tue, Sep 06, 2016 at 11:30:39AM -0400, Noel Chiappa wrote:
> > From: Jason Howe
> > when folks just dump an ebay item number rather than a full link, those
> > posts should die
>
> Why? It's a tiny bit more work to use them (prepend the number with the
> string "http://www.ebay.com/
On Tue, 6 Sep 2016 22:43:05 -0700
Bob Rosenbloom wrote:
> .
>
> > On Sep 6, 2016, at 6:16 PM, Al Kossow wrote:
> >
> >
> >
> >> On 9/6/16 4:18 PM, Tom Gardner wrote:
> >>
> >> A friend of mine died recently; he was amongst many things an
> >> electronics tinkerer and has a closet full of
> On Sep 5, 2016, at 9:30 AM, Josh Dersch wrote:
>
> At the LCM, I used an Apple II to test out the Alto's memory -- the Alto II
> XM uses 4116 RAM chips. I swapped in a row at a time and wrote a little
> BASIC program to test for obvious errors. This was time-consuming, but
> eliminated th
On Wed, Sep 07, 2016 at 08:55:40AM +0200, Pontus Pihlgren wrote:
> Wow, what an attitude.. I don't know much about Unicomps but should
> lesser know machines but unusual machines be preserved as well?
Well ... I imagine they already have decades worth of stuff to sort
through. (I am intending to
On 07/09/2016 03:32, Jules Richardson wrote:
On 09/06/2016 08:58 PM, Noel Chiappa wrote:
As far as I know, all the M8190's are _basically_ the same: they are the
KDJ11-B CPU, which support the PMI memory bus, can operate with a
KTJ11-B to
provide a UNIBUS, etc. They are the CPU in an 11/83 (wi
On Wed, Sep 7, 2016 at 12:10 AM, Kyle Owen wrote:
> Maybe the HP-41C simulator is next...
That will definitely be entertaining.
It will need three PDP-8 fields just for the 41C ROMs (12Kx10), and
400 words for the basic 41C RAM (16 "status" registers, 64
data/program registers, all of 56 bits ea
> From: Pete Turnbull
> all microPDP-11/73 machines had an M8190. The M8192 was mostly sold as
> an OEM board.
That's so bizarre (although the "Supermicrosystems Handbook", which covers
the 11/73, confirms it used the KDJ11-B). So the KDJ11-A (M8192) was not used
in any 'PDP-11/xx'?
Hi Ethan,
If you are going to VCF and I go, I'll Try to throw a MS11-JP in the van
for you.
It's yours for bugging the guy with the H960s one more time.
That should save you some chip chasing time.
Thanks, Paul
On Sep 7, 2016 1:08 AM, "JP Hindin" wrote:
>
>
> Greetings;
>
> My googlefu is failing me and I was wondering if someone might be able to
help me identify one of the boot ROMs present in an M9312 bootstrap/term
board. The board has three ROMs, an RX01 (042130), an RX02 (042131) and
then a mystery
> From: Ethan Dicks
> What's happening now . is when I change one location .. it
> echoes across multiple locations...
> ...
> 1) Depositing any value is echoed 20 later.
> ...
> Does this sound like a dodgy CPU, dodgy RAM or both?
It could be either. One possible
On Wed, Sep 7, 2016 at 1:26 AM, Paul Anderson wrote:
> Hi Ethan,
>
> If you are going to VCF and I go, I'll Try to throw a MS11-JP in the van
> for you.
Hi, Paul,
I am going.
> It's yours for bugging the guy with the H960s one more time.
I'll give him a shout. I won't be able to fit in a visi
> From: Ethan Dicks
> 12-sector packs are abundant compared to 16-sector packs
Really? Most of the RK05 packs I've seen for sale on eBay in the last couple
of years have been 16-sector - so I naturally assumed they were more common.
Well, I guess that explains why my offer to trade drew s
Both MIKBUG and SWTBUG need RAM at $a000. Originally this was provided by a
6810, 128-byte SRAM on the MP-A CPU board. To run Flex and other stuff that
wanted larger stack and workspace, people modified a 4K MP-M to reside at $a000
(instead of somewhere below $8000) and then removed the 6810 f
On Tue, 6 Sep 2016, Cameron Kaiser wrote:
Interesting. I've been trying to get a WiFi device for the Commodore
8-bits working consistently in 9600 bps mode, and have just been
assuming the garbage characters I get when I receive a screenful of text
all at once were due to buffer overruns. The ga
On Wed, Sep 7, 2016 at 8:35 AM, Noel Chiappa wrote:
> > From: Ethan Dicks
>
> > What's happening now . is when I change one location .. it
> > echoes across multiple locations...
> > ...
> > 1) Depositing any value is echoed 20 later.
> > ...
> > Does this sound li
On 07/09/2016 13:02, Noel Chiappa wrote:
From: Pete Turnbull
all microPDP-11/73 machines had an M8190. The M8192 was mostly sold
as an OEM board.
That's so bizarre (although the "Supermicrosystems Handbook", which
covers the 11/73, confirms it used the KDJ11-B).
As does the MicroPDP-11 Sys
-Original Message-
From: Chris Elmquist [mailto:chr...@pobox.com]
Sent: Wednesday, September 7, 2016 6:13 AM
To: General Discussion: On-Topic and Off-Topic Posts ;
Brad H ; 'General Discussion: On-Topic and
Off-Topic Posts'
Subject: RE: SWTPC 6800 weirdness
Both MIKBUG and SWTBUG nee
On Sep 7, 2016 6:27 AM, "Eric Smith" wrote:
>
> On Wed, Sep 7, 2016 at 12:10 AM, Kyle Owen wrote:
> > Maybe the HP-41C simulator is next...
>
> That will definitely be entertaining.
>
> It will need three PDP-8 fields just for the 41C ROMs (12Kx10), and
> 400 words for the basic 41C RAM (16 "stat
Ahhh.. okay, maybe I misunderstood. I was reading '4096 words of 8 bit RAM', I
don't know 'words' that well so I put it in a calculator and it was telling me
it was 8K. But docs suggested the original MP-M came with 2k. So setting the
board # jumper to 4, if it was at 2K, would run $4000 to $
On 9/6/16 11:55 PM, Don North wrote:
> Octal word 043127 decodes as ascii "FW", which is not a standard M9312 boot
> mnemonic. Probably a third party
> manufacturer custom boot prom.
>
It's probably for an SMS "FW" Floppy/Winchester.
That would be a good one to preserve.
http://bitsavers.org/
> From: Ethan Dicks
Let's look at this one first, this is probably the easier to solve.
>>> 2) Setting D10 in location 00 results in D10 set in all the
>>> locations
>> Sorry, didn't follow that? Did you mean that if you store 02000 in
>> location 0, all other locations n
> On Sep 7, 2016, at 2:51 AM, Pontus Pihlgren wrote:
>
> On Wed, Sep 07, 2016 at 01:58:24AM -0400, Ethan Dicks wrote:
>> On Tue, Sep 6, 2016 at 12:11 PM, Marc Howard wrote:
>>> It seems to me that one possible solution would be to whip up a PLL in a
>>> CPLD or FPGA to generate 12 sector timing
On Tue, 6 Sep 2016, Don North wrote:
On 9/6/2016 9:23 AM, JP Hindin wrote:
Greetings;
My googlefu is failing me and I was wondering if someone might be able to
help me identify one of the boot ROMs present in an M9312 bootstrap/term
board. The board has three ROMs, an RX01 (042130), an RX0
> The other question is the disassembly of the pack and the installation
> of the new hub. How is that done? What are the concentricity
> requirements for the platter? Is there a mating surface (exterior cylinder
> surface on the hub) or are platter and hub aligned in some fixture and
> then c
On Wednesday (09/07/2016 at 08:04AM -0700), Brad H wrote:
>
> Thanks Chris. I figured it was something like that with my first MP-M. I am
> curious though why simply setting another board to cover 8000-BFFF won't
> allow the system to operate in that board's absence. It bothers me that I'm
>
Charles Dickman's site shows a VC8E screenshot with text:
http://www.chdickman.com/pdp8/spacewar/
However, unless I'm missing something, I don't actually see what would've
drawn the characters. A little digging on Bitsavers shows there was a VC8E
driver.
http://bitsavers.trailing-edge.com/bits/D
> On Sep 7, 2016, at 8:51 AM, Noel Chiappa wrote:
>
>> From: Ethan Dicks
>
>> 12-sector packs are abundant compared to 16-sector packs
>
> Really? Most of the RK05 packs I've seen for sale on eBay in the last couple
> of years have been 16-sector - so I naturally assumed they were more common.
Anybody has a spare one, to sell?
With all the discussions about the P350/P380, I went to my storage,
and found two p350s without power supplies :(
Cheers
> On Sep 7, 2016, at 11:44 AM, Noel Chiappa wrote:
>
>> From: Ethan Dicks
>
> Let's look at this one first, this is probably the easier to solve.
>
2) Setting D10 in location 00 results in D10 set in all the
locations
>
>>> Sorry, didn't follow that? Did you mean that if you sto
> On Sep 7, 2016, at 11:56 AM, tony duell wrote:
>
>
>> The other question is the disassembly of the pack and the installation
>> of the new hub. How is that done? What are the concentricity
>> requirements for the platter? Is there a mating surface (exterior cylinder
>> surface on the hub)
Is there a hint as far as the affected hardware in that the ODT is
working, but the ram is not? The rom that is running ODT is also being
accessed for read correctly. Perhaps the problem is migrating since the
system halts however. A wild jump and a fault if the rom path is
affected might ex
On Wed, Sep 7, 2016 at 9:04 AM, Kyle Owen wrote:
> Charles Dickman's site shows a VC8E screenshot with text:
>
> http://www.chdickman.com/pdp8/spacewar/
>
> However, unless I'm missing something, I don't actually see what would've
> drawn the characters. A little digging on Bitsavers shows there
From: Paul Koning
> Some IBM systems ... have a "2315" drive which is an RK05.
Yeah, I think that was the original source of these packs. The Diablo 30/31
drives (used on the RK11-C controller before the RK05 was created) were
designed to use 2315 packs.
> From: Tony Duell
> My
> On Sep 7, 2016, at 1:18 PM, Noel Chiappa wrote:
> ...
>> From: Tony Duell
>
>> My intention was to put the hub on a spare spindle .. put the platter
>> on, turn it round by hand and use a lever-type dial gauge to get
>> minimum run-out.
>
> One of the people I buy PDP-11 parts from reports t
> From: Paul Koning
> Semiconductor memory, right?
Yup.
> A possible reason would be that the address drivers for that bit, or
> the address decoders in that chip, are busted. The result would be that
> reads and writes always touch the same address in the chip.
Oooh, good p
> > I looked into this a couple of years ago with the intention of making
> > a 24 sector pack for an HP7900 (actually part of an HP9880). Starting
> > from a 12 sector pack of course.
> >
> > This project got interupted by a house move and I've not gone back
> > to it yet, but I did discover there
- Original Message -
From: "Noel Chiappa"
To:
Cc:
Sent: Wednesday, September 07, 2016 1:18 PM
Subject: Re: RK05 packs
>From: Paul Koning
>
>> Some IBM systems ... have a "2315" drive which is an RK05.
>
> Yeah, I think that was the original source of these packs. The Diablo
> FWIW Burroughs also used drives/platters like this with their small systems
> (B80 - B1800); ISTR that they were ~ 5MB but 32 SPT instead of 12 or 16;
> unfortunately I dumped all of mine long ago.
I can remember when the Inmac catalogue (that dates me...) told you
to count the number of not
> On Sep 7, 2016, at 1:51 PM, tony duell wrote:
> ...
> Didn't the DEC RK01 use 8 sector packs? Something certainly did.
That would fit the IBM 2315 if indeed it used one sector notch for each sector
(it has 8 per track).
paul
On 9/7/16 11:21 AM, Paul Koning wrote:
> That would fit the IBM 2315 if indeed it used one sector notch for each
> sector (it has 8 per track).
>
and 100 TPI
Original Diablo drives were also 100 TPI, and used silver colored heads, moving
to 200 TPI and the more
common white ceramic heads.
A
> On Sep 7, 2016, at 2:45 PM, Al Kossow wrote:
>
>
>
> On 9/7/16 11:21 AM, Paul Koning wrote:
>
>> That would fit the IBM 2315 if indeed it used one sector notch for each
>> sector (it has 8 per track).
>>
>
> and 100 TPI
>
> Original Diablo drives were also 100 TPI, and used silver color
On 09/07/16 05:02, Noel Chiappa wrote:
>
> The other thing that makes no sense is that the KDJ11-B (M8190) has all that
> extra circuitry on it to support PMI, etc - all of which is unused in the
> 11/73 application! Why not just plug in a (presumably cheaper) M8192?
In Marketing-land, the VAXsta
> On Sep 7, 2016, at 3:20 PM, Steven M Jones wrote:
>
> On 09/07/16 05:02, Noel Chiappa wrote:
>>
>> The other thing that makes no sense is that the KDJ11-B (M8190) has all that
>> extra circuitry on it to support PMI, etc - all of which is unused in the
>> 11/73 application! Why not just plug
Unfortunately, I won't be able to make it to VCFMW this year.
(Those of you who don't know me are probably thinking "So what?"
Those who do are probably split between "Aww, that's too bad"
and "Good; he's a pain in the...") In lieu of my "sparkling
personality" I'm making available the ENIAC simul
The most likely cause of what you are seeing is a broken wire when the
plane was originally assembled. The wire was pulled back a few cores and
the end stripped. New wire was soldered to old, insulated and then they
continued threading in that wire. Over the years the solder joint has
degraded o
I'd vote for the HP-1xC line myself. You can get 5 different calculators
(financial, 3 x scientific and programmer) for nearly the effort of the
first one.
The HP-16C (http://www.hpmuseum.org/hp16.htm) would be especially helpful
as it can easily be converted to calculate with a 12 bit with carry
On 07/09/2016 20:20, Steven M Jones wrote:
Anybody know what the most common actually-shipped configuration of the
MicroPDP-11/73 were? BA23, M8190, 1 RAM board, RQDX_, and DLV11?
From my experience servicing them in the UK, pretty much that. I saw a
few with DEQNAs and some with two memory b
On 9/7/16 11:46 AM, Paul Koning wrote:
> TPI, as in "transitions per inch"?
>
tracks per inch
> I vaguely remember that the 1311 (20 sectors of 200 digits each per track)
> used silvery colored heads. I wonder if those are the same. They were
> pretty sturdy; one day when we had a hydraul
From: Kyle Owen: Wednesday, September 07, 2016 9:04 AM
However, unless I'm missing something, I don't actually see what would've
drawn the characters. A little digging on Bitsavers shows there was a VC8E
driver.
http://bitsavers.trailing-edge.com/bits/DEC/pdp8/papertapeImages/russ.ucs.indiana.e
On Wed, Sep 7, 2016 at 4:20 PM, Vincent Slyngstad
wrote:
>
> That driver contains the line:
>JMS I (STRTHL+4 /CALL PROGRAM HELP
>
> which calls the code in
> http://bitsavers.trailing-edge.com/bits/DEC/pdp8/papertapeIm
> ages/russ.ucs.indiana.edu/Utils/VC8E/Ascii/help.pa
>
> which is what
> From: Pete Turnbull
>> The other thing that makes no sense is that the KDJ11-B (M8190) has
>> all that extra circuitry on it to support PMI, etc - all of which is
>> unused in the 11/73 application! Why not just plug in a (presumably
>> cheaper) M8192? In the /73 application,
> > On Sep 5, 2016, at 9:30 AM, Josh Dersch wrote:
> >
> > At the LCM, I used an Apple II to test out the Alto's memory -- the
> > Alto II XM uses 4116 RAM chips. I swapped in a row at a time and wrote
a
> > little BASIC program to test for obvious errors. This was
> > time-consuming, but eli
On 07/09/2016 22:35, Noel Chiappa wrote:
> From: Pete Turnbull
> Don't forget the LTC :-)
?? The KDJ11-A has an on-board LTC - see EK-KDJ1A-UG-001, pg. 1-7.
So it does. I'd forgotten that!
> Otherwise, you'd need an additional bootstrap card such as an MRV11-D
> with -B2 boo
On Wed, Sep 7, 2016 at 3:43 PM, CuriousMarc wrote:
> > > On Sep 5, 2016, at 9:30 AM, Josh Dersch wrote:
> > >
> > > At the LCM, I used an Apple II to test out the Alto's memory -- the
> > > Alto II XM uses 4116 RAM chips. I swapped in a row at a time and wrote
> a
> > > little BASIC program to
On Wed, Sep 7, 2016 at 3:59 PM, Pete Turnbull wrote:
>
> Yes, it has a lot of ROM sockets: it's a bootstrap/terminator/LTC card. In
> fact it's the archetypal bootstrap card, the one that first had the paging
> mechanisms all the others use. The problem is none of the sockets support
> large ROMs
On Wed, Sep 7, 2016 at 9:15 AM, Kyle Owen wrote:
> I could imagine OS/8 would come in handy here, as we could swap fields out,
> maybe between several fields of ROM instructions, as kind of a cache
> approach. There would be a ROM file that's required for use.
I thought about swapping, but the mi
I finally got my hands on a couple of MM57409 "Super Number Cruncher"
chips with 1985 date codes. I think it was probably introduced around
1982. It's a NMOS part with the same concept (though not compatible
with) the earlier PMOS MM57109 "Number Oriented Processor", which was
introduced in 1977.
On 08/09/2016 00:37, Glen Slick wrote:
Basically this boils down to having the MXV11-B2 Boot ROMs installed
on either an MXV11-B or MRV11-D. The MXV11-B2 Boot ROMs are apparently
not compatible with the BDV11, for reasons I don't remember 100% off
the top of my head.
Too big. They're a pair o
I have two bad memory boards and could use some advise on how to
repair them.
The first is an MSV11-PL 512KB-Q-Bus 22bit.
Dead to both CSR and Memory address access in ODT.
Was working until a short time ago. Checked all the jumpers and
no evidence any magic smoke has been released. I have a
On Wed, Sep 7, 2016 at 5:31 PM, Pete Turnbull wrote:
> On 08/09/2016 00:37, Glen Slick wrote:
>
>> Basically this boils down to having the MXV11-B2 Boot ROMs installed
>> on either an MXV11-B or MRV11-D. The MXV11-B2 Boot ROMs are apparently
>> not compatible with the BDV11, for reasons I don't re
On Wed, Sep 7, 2016 at 1:46 PM, Noel Chiappa wrote:
> > From: Paul Koning
>
> > A possible reason would be that the address drivers for that bit, or
> > the address decoders in that chip, are busted. The result would be that
> > reads and writes always touch the same address in the
On Wed, Sep 7, 2016 at 1:18 PM, Noel Chiappa wrote:
> Yeah, I think that was the original source of these packs. The Diablo 30/31
> drives (used on the RK11-C controller before the RK05 was created) were
> designed to use 2315 packs.
I have one RK11-C (as well as RK11-D, RKV11-D and RK8E) and I u
There is a nice HP-16C emulator for Windows - and Android.
http://www.wrpn.emmet-gray.com/
Also has Java version
(and sources)
Keven Miller
- Original Message -
From: "Marc Howard"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Wed 07 Sep 2016 09:53 AM
Subject: Re:
There is a nice HP-16C emulator for Windows - and Android.
http://www.wrpn.emmet-gray.com/
Also has Java version
(and sources)
Keven Miller
- Original Message -
From: "Marc Howard"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Wed 07 Sep 2016 09:53 AM
Subject: Re:
65 matches
Mail list logo
