Keston Common? There's one near Bromley.
Oh well back to latest project - a TU58.
Power OK and BOB shows P2/DB25 is live so TXD
On 30/11/15 16:44, tony duell wrote:
Hi Tony
Did you say Data Dynamics? I certainly knew them. I used
to sell them LA36 print mechs.
Yes, almost cert
>Paul Koning wrote:
The reason for the interleaving on DECtape is the start/stop time. To run
non-interleaved at high speed you have to leave the tape running (no "stop"
commands) and you have to issue the next command quickly. RT-11 could do that; DOS could
not.
When I attempted to evalu
On 2015-12-01 02:19, Paul Koning wrote:
On Nov 30, 2015, at 8:12 PM, Johnny Billquist wrote:
...
DECtape never did interleaving that I know of.
Sure it does. The DOS format, which was adopted by RSTS, has 4 way
interleaving. If you write a 500 block file, it writes every 4th block
forwa
> On Nov 30, 2015, at 8:12 PM, Johnny Billquist wrote:
>
> ...
> DECtape never did interleaving that I know of.
Sure it does. The DOS format, which was adopted by RSTS, has 4 way
interleaving. If you write a 500 block file, it writes every 4th block
forward, then fills in one set of gaps r
Jerry Weiss
j...@ieee.org
> On Nov 30, 2015, at 7:12 PM, Johnny Billquist wrote:
>
> On 2015-12-01 02:06, Jerry Weiss wrote:
>>
>>
>> The TU58 was a block addressable using a cassette tape drive famously(?)
>> called DECtape II. File placement on the two different linear tracks was a
>>
On 2015-12-01 02:06, Jerry Weiss wrote:
On Nov 30, 2015, at 6:35 PM, Paul Koning wrote:
On Nov 30, 2015, at 4:45 PM, Fred Cisin wrote:
Oversimplified remedial tutorial:
Ideally, the system reads a sector, does what it has to do with the content,
and goes back for the next one, and can re
On Nov 30, 2015, at 6:35 PM, Paul Koning wrote:
>
>
>> On Nov 30, 2015, at 4:45 PM, Fred Cisin wrote:
>>
Oversimplified remedial tutorial:
Ideally, the system reads a sector, does what it has to do with the
content, and goes back for the next one, and can read every sector of t
On 11/30/15 3:34 PM, Jay West wrote:
Alternatively, TSS looks nice, but I am not sure that the full OS was ever
found and is available? Hardware Reqs?
It's been found. http://www.heeltoe.com/index.php?n=Cpus.Pdp8Tss-8
The core o/s can be rebuilt from scratch and run in several forms. I did
a
> On Nov 30, 2015, at 4:45 PM, Fred Cisin wrote:
>
>>> Oversimplified remedial tutorial:
>>> Ideally, the system reads a sector, does what it has to do with the
>>> content, and goes back for the next one, and can read every sector of the
>>> track in a single revolution.
>
> From: "Paul Koni
On 29/11/15 03:19, Mark J. Blair wrote:
I found mine on eBay, probably around a year ago. I searched for a
long time before I found it. Another hen's tooth that I would like to
find is a magtape end clipper/crimper, but I'm even less likely to
find one since I'm taking an eBay vacation. Good lu
On 30/11/2015 22:30, "Liam Proven" wrote:
> On 30 November 2015 at 18:43, Adrian Graham
> wrote:
>> All of this fixing I'm currently doing is all Dave's fault, so yes :)
>
>
> [Actual LOL]
When I say 'his fault' I mean his blog has inspired me to get down and dirty
with all the dead PETs I
>Peter Coghlan dropped me a note privately, saying the signal of the F8 ROM
could also be caused by the pin not connecting properly. The replacement
ROM could have had been sufficiently >different in that the legs were at a
slightly different angle etc. This would also make sense, as I couldn't
u
On 11/30/15 2:20 PM, Rich Alderson wrote:
I'm told by a former operator of one that TSS/8 will also run on an 8/e, but
I don't have independent confirmation that that is so.
It did. The University of Wisconsin - Milwaukee's system was an 8/e with
custom mods that let you store files on an
On 11/30/2015 03:17 PM, Charles Anthony wrote:
One of the drum computers had the address of the next instruction as
an operand of the instruction; the programmer would scatter the
instructions according to the execution time of the instructions;
IIRC "assembler" referred to the process of conver
Thanks for those comments Jim, Yes, something to think about.
Peter Coghlan dropped me a note privately, saying the signal of the F8 ROM
could also be caused by the pin not connecting properly. The replacement
ROM could have had been sufficiently different in that the legs were at a
slightly dif
On Mon, Nov 30, 2015 at 3:13 PM, Chuck Guzis wrote:
> On 11/30/2015 02:09 PM, Mike Stein wrote:
>
>> Nothing wrong with what you wrote that I can see; excellent tutorial
>> IMO.
>>
>
> The issue of "floppy interleave" pretty much went away when memory got
> cheap enough to buffer an entire track,
On 11/30/2015 02:09 PM, Mike Stein wrote:
Nothing wrong with what you wrote that I can see; excellent tutorial
IMO.
The issue of "floppy interleave" pretty much went away when memory got
cheap enough to buffer an entire track, provided the controller is
capable of 1:1 interleave transfers.
On Mon, Nov 30, 2015 at 1:45 PM, Fred Cisin wrote:
> Oversimplified remedial tutorial:
>>> Ideally, the system reads a sector, does what it has to do with the
>>> content, and goes back for the next one, and can read every sector of the
>>> track in a single revolution.
>>>
>>
> From: "Paul Koni
On 30 November 2015 at 18:43, Adrian Graham
wrote:
> All of this fixing I'm currently doing is all Dave's fault, so yes :)
[Actual LOL]
--
Liam Proven • Profile: http://lproven.livejournal.com/profile
Email: lpro...@cix.co.uk • GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lpro...@hotmail.com
From: Jay West
Sent: Monday, November 30, 2015 12:34 PM
> I would love to see some comparison between ETOS and MULTOS by anyone "in the
> know". I'd just like a nice timeshareing system for my 8E that is close to
> OS/8 and runnable with the hardware I have.
> Alternatively, TSS looks nice, but I
On 11/30/2015 12:18 PM, Terry Stewart wrote:
Speaking of Schrodinger's feline, here are details of my recent Apple II+
repair for those who might be interested:
http://www.classic-computers.org.nz/blog/2015-11-29-more-repairs-to-my-appleII+.htm
Terry (Tez)
Terry,
nice dialog on your repair jo
Nothing wrong with what you wrote that I can see; excellent tutorial IMO.
m
- Original Message -
From: "Fred Cisin"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Monday, November 30, 2015 4:45 PM
Subject: Re: Sector Interleave
>>> Oversimplified remedial tutorial:
>>>
Oversimplified remedial tutorial:
Ideally, the system reads a sector, does what it has to do with the content,
and goes back for the next one, and can read every sector of the track in a
single revolution.
From: "Paul Koning"
Your writeup was aimed at floppy disks, but interleave may also ap
- Original Message -
From: "Paul Koning"
Sent: Monday, November 30, 2015 3:55 PM
> On Nov 30, 2015, at 3:45 PM, Fred Cisin wrote:
>
> Oversimplified remedial tutorial:
> Ideally, the system reads a sector, does what it has to do with the content,
> and goes back for the next one, and
Glen wrote...
--
If you have a 2113B and a 2117F could you use those as a base? What are the
magic parts? Some special and rare interconnect boards? And a special and rare
async mux? And particular disc requirements?
--
2113/2117 - yes.
Off the top of my head
For 2000E, you can get
Jay - yes I know and for hardware sales too. as I sold and
troubleshot what I used and needed all the time in house so it was a perfect
match. eventually the only DEC stuff that was there was in museum
displays in the other suite the museum occupied. Ed#
In a message d
> On Nov 30, 2015, at 3:45 PM, Fred Cisin wrote:
>
> Oversimplified remedial tutorial:
> Ideally, the system reads a sector, does what it has to do with the content,
> and goes back for the next one, and can read every sector of the track in a
> single revolution.
> ...
> It is USUALLY the sam
On Mon, Nov 30, 2015 at 11:05 AM, Jay West wrote:
> Rick wrote
> ---
> I'd *LOVE* to be able to have a real-hardware HP Timeshared BASIC system
> running here, but alas, those are a lot harder to come by than DEC stuff
> ---
> Contact me off-list :)
>
> J
If you have a 2113B and a 211
On 2015-11-30 21:34, Jay West wrote:
Johnny wrote...
Fun stuff. However, I do not expect you'll see much impovement in performance
in ETOS compared to MULTOS.
You'll gain if you have code that do CIF n, followed by much code before the
JMP/JMS, but that is
On Mon, 30 Nov 2015, dwight wrote:
I wrote an interleave formatter for a friend to use on his H89.
He had an enormous data file that took for ever to read in BASIC.
He couldn't believe it could be made to work so much faster.
Oversimplified remedial tutorial:
Ideally, the system reads a sector,
On 11/30/2015 02:18 PM, Terry Stewart wrote:
Speaking of Schrodinger's feline, here are details of my recent Apple II+
repair for those who might be interested:
http://www.classic-computers.org.nz/blog/2015-11-29-more-repairs-to-my-appleII+.htm
Nice!
My II+ needs a new escape keyswitch, keycap
Johnny wrote...
Fun stuff. However, I do not expect you'll see much impovement in performance
in ETOS compared to MULTOS.
You'll gain if you have code that do CIF n, followed by much code before the
JMP/JMS, but that is not exactly a common pattern in most P
Speaking of Schrodinger's feline, here are details of my recent Apple II+
repair for those who might be interested:
http://www.classic-computers.org.nz/blog/2015-11-29-more-repairs-to-my-appleII+.htm
Terry (Tez)
On 2015-11-30 19:26, Rick Bensene wrote:
Hi, all,
Just figured I'd post something about my tinkering yesterday.
I got an M8830 from Paul Anderson. This is the crystal-contolled clock
for the Omnibus PDP 8 machines.
Yesterday, I had a chance to try it out.
First, I checked the power supply pin
somewhere i have an edu system book.
HA! yea the fixed head drives made better swapping media! for tss 8
as core was small in those days!
In a message dated 11/30/2015 12:03:12 P.M. US Mountain Standard Tim,
ri...@bensene.com writes:
Ed wrote:
> when I was young in the computer
Rick wrote
---
I'd *LOVE* to be able to have a real-hardware HP Timeshared BASIC system
running here, but alas, those are a lot harder to come by than DEC stuff
---
Contact me off-list :)
J
Ed wrote...
---
when I was young in the computer biz wanted to build a timeshare 8
system..
however ended up going down the HP route instead for the rest of my
career .
---
You chose the better path for a timesharing system *ducks & runs*
J
Ed wrote:
> when I was young in the computer biz wanted to build a timeshare 8
> system..
> however ended up going down the HP route instead for the rest of
my
> career .
> There was also something called TSS-8 as I remember. Ed#
I'd *LOVE* to be able to have a real-hardware HP Timeshare
when I was young in the computer biz wanted to build a timeshare 8
system..
however ended up going down the HP route instead for the rest of my
career .
There was also something called TSS-8 as I remember. Ed# _www.smecc.org_
(http://www.smecc.org)
In a message dated 11/30/2015
FYI - in the not too distant future I'm going to get back to my 8E rig. I'll
be pulling out the TU10/TM11(unused, obviously) from the second cabinet and
putting in an RX01 and RK05, and hopefully connecting up the TU56 and PC04
that are in the main cabinet.
In any case, my goal is to run ETOS on t
Hi, all,
Just figured I'd post something about my tinkering yesterday.
I got an M8830 from Paul Anderson. This is the crystal-contolled clock
for the Omnibus PDP 8 machines.
Yesterday, I had a chance to try it out.
First, I checked the power supply pins to make sure no shorts or
anything like t
On 30/11/2015 16:14, "Liam Proven" wrote:
> On 28 November 2015 at 11:58, Adrian Graham
> wrote:
>> That's what I've been doing for the last 2 months, all centred around fixing
>> a PET4032.
>
>
> Is Sir aware of Tynemouth Software?
>
All of this fixing I'm currently doing is all Dave's faul
> Hi Tony
> Did you say Data Dynamics? I certainly knew them. I used
> to sell them LA36 print mechs.
Yes, almost certainly the same company. They sold several teleprinters
based on the Teletype Model 33. Same mechanics, but IMHO a nicer (all
metal) case and different electronics.
Wonderful fun...Note you need an arrow to the mental institution someplace,
especially if you are trying to load programs from Teletype.
--
Bill
On 28 November 2015 at 11:58, Adrian Graham
wrote:
> That's what I've been doing for the last 2 months, all centred around fixing
> a PET4032.
Is Sir aware of Tynemouth Software?
http://blog.tynemouthsoftware.co.uk/2015/09/commodore-pet-8032-repair-overclocked-to-death.html
http://blog.tynemou
I wrote an interleave formatter for a friend to use on his H89.
He had an enormous data file that took for ever to read in BASIC.
He couldn't believe it could be made to work so much faster.
Dwight
From: cctalk on behalf of Chuck Guzis
Sent: Sunday, Nov
Hi Tony
Did you say Data Dynamics? I certainly knew them. I used
to sell them LA36 print mechs.
It was run by two old guys called Tindale and Stabler. The factory was
in Hayes and I used to drive
there from the DEC office in Ealing via Bombay (sorry I mean Southall).
Their stuff
On Nov 30, 2015 7:29 AM, "tony duell" wrote:
>
> > NOTE: I will pay a generous price for a few inches of papertape repair
tape
> > if anyone has any! I am located in Landenberg, PA USAContact me
> > privately if you can help.
>
> The official splicing tape I've seen is in little squares with
> NOTE: I will pay a generous price for a few inches of papertape repair tape
> if anyone has any! I am located in Landenberg, PA USAContact me
> privately if you can help.
The official splicing tape I've seen is in little squares with all holes
punched
(probably covers 9 or 10 characters o
> punches and two keyboardless golfball typewriters. I have forgotten
> exactly what types they were. I think the punch said something like
> BPRE on it and the readers did not match the rest of the system being
Probably BRPE (normally pronounced 'Burpee') which is a high speed
(something like 1
Back inthe early 70's one of my jobs was to repair and set up 4K core
stores for ICT 4100 systems.
The company I worked for were an off shoot of the big boat builders
Camper & Nicholsons.
It was an all paper tape system (no cards). There were two readers, two
punches and two keyboardless golfb
Here is an idea I haven't tried, but might work: Take some unoiled paper or
mylar tape and punch it with rubouts. Spray one side with spray-on photo
mounting adhesive just before use. It would definitely leave a thick spot in
the repaired tape, but I suspect it would hold up long enough to p
>
> I have a box of the repair material somewhere, but I suspect the
> adhesive would be useless with the material. Better to manufacture your
> own with Williams suggestion, or a simpler one like mine. BTW, we only
> used this method with tapes to be read on an ASR33. We didn't have high
> spe
what are the specs of the tape and glue? remember that using a
lasercutter from a nearby fablab or hackerspace could produce the exact
tape you need.
On 30-11-15 02:40, william degnan wrote:
NOTE: I will pay a generous price for a few inches of papertape repair tape
if anyone has any! I am l
On 11/29/2015 11:32 PM, simon wrote:
what are the specs of the tape and glue? remember that using a
lasercutter from a nearby fablab or hackerspace could produce the
exact tape you need.
On 30-11-15 02:40, william degnan wrote:
NOTE: I will pay a generous price for a few inches of papertape
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