I had heard he was in poor health due to a bad diagnosis but it's tragic to
hear he's gone now.
It was because his annual Free Stuff Days I was able to build up most of my
lab equipment. Those were the days when you could still pull up and fill
your car with all sorts of goodies. I bought my first
> On Sep 6, 2023, at 12:48 PM, Paul Koning via cctalk
> wrote:
>
> The weird case of the 11/05 is because the general registers are assigned
> addresses 177700 through 177707 for R0 through PC, so R1 is at 177701 even
> though it's a word wide. On most models those addresses only work from
Mattis Lind wrote:
>There have been a number of Ebay listings for various ns32k software, QIC
>tapes and 1/2 inch tapes. >I thought I would buy them if there were no other
>bids to try to recover the contents.
...
>But there was a buyer and I didn't want to fight over something where I
> On Sep 6, 2023, at 3:32 PM, Jon Elson via cctalk
> wrote:
>
> On 9/6/23 14:00, Mike Katz via cctalk wrote:
>> Paul,
>>
>> I'm not an 11 expert but don't most instruction fetches (or the last clock
>> phase on an instruction) cause the pc to increment by one?
> PDP-11 instructions are 16-b
And for a bonus point, which signal description had an asterisk beside
it with a footnote, "add an extra 20 minutes on Saturday night" before
marketing found out and scotched it?
cheers,
Nigel
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source c
> On Sep 6, 2023, at 3:00 PM, Mike Katz via cctalk
> wrote:
>
> Paul,
>
> I'm not an 11 expert but don't most instruction fetches (or the last clock
> phase on an instruction) cause the pc to increment by one?
No, by 2 because memory addresses are byte addresses but instructions are
2-byt
On 9/6/23 14:00, Mike Katz via cctalk wrote:
Paul,
I'm not an 11 expert but don't most instruction fetches
(or the last clock phase on an instruction) cause the pc
to increment by one?
PDP-11 instructions are 16-bit. Since memory is
byte-addressed, the instruction counter should normally
in
On 9/6/23 12:08, Paul Koning via cctalk wrote:
Reminds me of the "PDP-11 trivia contest" that was held at DECUS, I think on the occasion
of the 20th anniversary of the PDP-11. If so that would have been 2000. I still have the poster
that went with it somewhere. And I remember the question I
Paul,
I'm not an 11 expert but don't most instruction fetches (or the last
clock phase on an instruction) cause the pc to increment by one?
On 9/6/2023 12:08 PM, Paul Koning via cctalk wrote:
Reminds me of the "PDP-11 trivia contest" that was held at DECUS, I think on the occasion
of the 20t
> On Sep 6, 2023, at 1:14 PM, Fritz Mueller wrote:
>
>
>> On Sep 6, 2023, at 10:08 AM, Paul Koning via cctalk
>> wrote:
>> "On what model and under what circumstances will the PC increment by 1?"
>
> At least true on a KD11-B when executing code out of the memory-mapped
> register file :-
> On Sep 6, 2023, at 10:08 AM, Paul Koning via cctalk
> wrote:
> "On what model and under what circumstances will the PC increment by 1?"
At least true on a KD11-B when executing code out of the memory-mapped register
file :-)
(I just happen to have been wading through one of these a couple
Reminds me of the "PDP-11 trivia contest" that was held at DECUS, I think on
the occasion of the 20th anniversary of the PDP-11. If so that would have been
2000. I still have the poster that went with it somewhere. And I remember the
question I contributed: "On what model and under what circu
Do you understand "Stop this RIM RAM or I will DEC you"?
Do you know what PDP is an acronym for?
Do you think in PDP-11 Assembler.
Do you know the difference between OS/8 and RTS/8.
Is EMACS your friend?
Can you discuss the advantages of Tops 10 over Tops 20.
Have you ever programmed a DEC 1
On 9/6/23 06:19, Mattis Lind via cctalk wrote:
There have been a number of Ebay listings for various ns32k software, QIC
tapes and 1/2 inch tapes. I thought I would buy them if there were no other
bids to try to recover the contents.
https://www.ebay.com/itm/225759541222
https://www.ebay.com/itm
There have been a number of Ebay listings for various ns32k software, QIC
tapes and 1/2 inch tapes. I thought I would buy them if there were no other
bids to try to recover the contents.
https://www.ebay.com/itm/225759541222
https://www.ebay.com/itm/225759543101
https://www.ebay.com/itm/2257507068
On Wed, 6 Sep 2023, Christian Corti via cctalk wrote:
On Tue, 5 Sep 2023, Tom Ivar Helbekkmo wrote:
James B DiGriz via cctalk writes:
Oh, I've always been interested in them, just that opportunity and
means never converged when I wasn't distracted by other things, and
then they became yester
On Tue, 5 Sep 2023, Tom Ivar Helbekkmo wrote:
James B DiGriz via cctalk writes:
Oh, I've always been interested in them, just that opportunity and
means never converged when I wasn't distracted by other things, and
then they became yesterday's news and hard to find. If yours turn up,
I'm sure
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