Original message
From: "drlegendre ."
Date: 2017-01-03 8:03 PM (GMT-08:00)
To: "General Discussion: On-Topic and Off-Topic Posts"
Subject: Re: was: National Semi... is Apple ][ collectability (if any)
"Vent-less case" - LoL!!
Add some RAM, maybe a DISC-II card and thos
If you can't find them, I'll look Sunday. I'll be out of town for a few
days.
Paul
On Tue, Jan 3, 2017 at 7:04 PM, Charles Dickman wrote:
> I am looking for schematics or any documentation for the LA180
> interface for the PDP8/e. A scan would be great. I want to see if I
> can use it to interfa
"Vent-less case" - LoL!!
Add some RAM, maybe a DISC-II card and those things overheated even +with+
the vents.. that's why the Cider fan became popular, among other things.
When I was in high school, we'd pop the case tops open, and run them that
way. Otherwise, they'd overheat and start screwing
On Tue, Jan 3, 2017 at 8:04 PM, Charles Dickman wrote:
> I am looking for schematics or any documentation for the LA180
> interface for the PDP8/e. A scan would be great. I want to see if I
> can use it to interface to a Centronics interface printer.
I don't have the schematics (I do have an LC8-
On 1/3/17 12:50 PM, David Brownlee wrote:
On 3 January 2017 at 20:11, David Brownlee wrote:
On 3 January 2017 at 15:50, Noel Chiappa wrote:
> From: Josh Dersch
> Thought I'd share this fix with you all just in case someone in the
> future might make use of it.
To help dissem
On 01/03/2017 01:47 PM, Brian L. Stuart wrote:
On Tue, 1/3/17, Cory Heisterkamp wrote:
What I’m wondering is if anyone is familiar with the setup/adjustment
procedure for getting the heads set correctly. There *might* be a couple of
unused tracks I can relocate heads to, but my thought is that
On 1/3/17 5:42 PM, Al Kossow wrote:
>
> I think Paul Pierce's machine is at LCM now.
They have his LGP-30
On 1/3/17 5:42 PM, Al Kossow wrote:
>
> Someone should do the same for the surviving G-15s as well. I think Paul
> Pierce's machine is at LCM now.
>
turns out we have it
http://www.computerhistory.org/collections/catalog/102728118
On 1/3/17 5:22 PM, Paul Koning wrote:
> The key questions for reconstructing such a device is what the modulation
> scheme is, and the pulse pattern.
There are running LGP-30s. Should be short work with a digital oscillosope to
capture the flux changes.
Hopefully, someone has done this alread
> On Jan 3, 2017, at 6:07 PM, Chuck Guzis wrote:
>
> On 01/03/2017 01:42 PM, Mark Linimon wrote:
>
>> Very ambitious. IIRC for the G-15 there is/are (one? two?) timing
>> track(s) which were written at the factory. Of course whatever that
>> machine was, has not survived. I remember reading
I am looking for schematics or any documentation for the LA180
interface for the PDP8/e. A scan would be great. I want to see if I
can use it to interface to a Centronics interface printer.
-chuck
On Jan 3, 2017, at 2:22 PM, Klemens Krause wrote:
> On Tue, 3 Jan 2017, Cory Heisterkamp wrote:
>>
>>
>> What I’m wondering is if anyone is familiar with the setup/adjustment
>> procedure for getting the heads set correctly. There *might* be a couple of
> We relocated some of the heads on
On 01/03/2017 01:42 PM, Mark Linimon wrote:
> Very ambitious. IIRC for the G-15 there is/are (one? two?) timing
> track(s) which were written at the factory. Of course whatever that
> machine was, has not survived. I remember reading that if you lost
> that timing track, your machine was toast.
On 01/03/2017 01:19 PM, Paul Koning wrote:
> Metal alloy plating seems common in fixed head disks also, at least
> in the ones from DEC I have seen. Making a new drum sounds like a
> great class project for an ambitious machine shop student.
Modern CNC gear and carbide bits should make this pret
On Tue, Jan 03, 2017 at 04:19:01PM -0500, Paul Koning wrote:
> Making a new drum sounds like a great class project for an ambitious
> machine shop student.
Very ambitious. IIRC for the G-15 there is/are (one? two?) timing track(s)
which were written at the factory. Of course whatever that machin
> On Jan 3, 2017, at 4:15 PM, Chuck Guzis wrote:
>
> On 01/03/2017 12:57 PM, Cory Heisterkamp wrote:
>
>> Once I can make sense of the timing tracks, I think I'll proceed with
>> this. Not sure how I feel about using a micro-based solution though.
>> Just seems wrong : ) -C
>
>
> If enough
On 01/03/2017 12:57 PM, Cory Heisterkamp wrote:
> Once I can make sense of the timing tracks, I think I'll proceed with
> this. Not sure how I feel about using a micro-based solution though.
> Just seems wrong : ) -C
If enough working heads can be found, the drum probably can be
remanufactured
On Tue, Jan 3, 2017 at 1:47 PM, Brian L. Stuart
wrote:
> On Tue, 1/3/17, Cory Heisterkamp wrote:
> > What I’m wondering is if anyone is familiar with the setup/adjustment
> > procedure for getting the heads set correctly. There *might* be a couple
> of
> > unused tracks I can relocate heads to,
On 3 January 2017 at 20:11, David Brownlee wrote:
> On 3 January 2017 at 15:50, Noel Chiappa wrote:
>> > From: Josh Dersch
>>
>> > Thought I'd share this fix with you all just in case someone in the
>> > future might make use of it.
>>
>> To help disseminate it, I uploaded the fix to
- Original Message -
From: "James Attfield"
To:
Sent: Monday, January 02, 2017 4:09 PM
Subject: Desparately seeking Cromemco chassis (UK)
> Wishing all here a very Happy New Year!
>
> Along with some other folks in 2017 I have decided I am going to ripple
> through all of my vintage s
On Tue, 3 Jan 2017, Cory Heisterkamp wrote:
What I’m wondering is if anyone is familiar with the setup/adjustment
procedure for getting the heads set correctly. There *might* be a couple of
We relocated some of the heads on our second LGP-30. This is not
difficult. We put 3 or 4 layers of 3 mi
On 3 January 2017 at 15:50, Noel Chiappa wrote:
> > From: Josh Dersch
>
> > Thought I'd share this fix with you all just in case someone in the
> > future might make use of it.
>
> To help disseminate it, I uploaded the fix to the Computer History wiki:
>
> http://gunkies.org/wiki/CD
On Tue, 1/3/17, Cory Heisterkamp wrote:
> What I’m wondering is if anyone is familiar with the setup/adjustment
> procedure for getting the heads set correctly. There *might* be a couple of
> unused tracks I can relocate heads to, but my thought is that if half a
> dozen heads were already in cont
In a message dated 1/3/2017 11:11:54 A.M. US Mountain Standard Time,
el...@pico-systems.com writes:
On 01/03/2017 10:58 AM, Cory Heisterkamp wrote:
> While waiting for the machine, I decided to investigate the stuck drum.
> This unit has 71 read/write heads plus what appears to be an induct
On 01/03/2017 10:58 AM, Cory Heisterkamp wrote:
While waiting for the machine, I decided to investigate the stuck drum.
This unit has 71 read/write heads plus what appears to be an inductive
pickup for the system clock. Upon closer examination I discovered multiple
heads in contact with the drum
While waiting for the machine, I decided to investigate the stuck drum.
This unit has 71 read/write heads plus what appears to be an inductive
pickup for the system clock. Upon closer examination I discovered multiple
heads in contact with the drum surface preventing rotation. And in the
process of
thanks. guess I should do that
my files in http://bitsavers.org/bits/Foonly/F2
On 1/3/17 4:53 PM, Johnny Eriksson wrote:
>> Appeared here:
>>
>> http://github.com/PDP-10/FOONEX
>
> The web says:
> "Initial checkin whilst I figure out what format the files are"
>
> I took a quick look and gues
Al Kossow wrote:
> Lars Brinkhoff wrote:
>> Appeared here:
>> http://github.com/PDP-10/FOONEX
> wonder if its the code on bitsavers I got from a Symbolics backup tape
Yes, it looks much like the contents of your F2/files directory, minus
the microcode.
How far did Foonex diverge from BB&N TENEX? If not TOO far, it might
be nice to have them both as branches in one repository, for comparison.
Hi,
On Mon, Jan 02, 2017 at 10:32:28PM -0800, Richard Pope wrote:
>Walter,
>. . . . I appreciate all of this information. I have a revision 2.0
>board and my info shows U8 as a 96S02 multivibrator chip. I have tried
>to find a replacement for this and I have not been successful.
>On 1/2/2017 11:26 PM, Brad H wrote:
> I brought the RFI thing up with him. No response. There is a legit Rev 1
> there too asking $3500. I don't find Apple IIs below Rev 0 that interesting
> anymore, personally. I think even the legit guy would struggle to get much
> above $1500.
>The vinta
> Appeared here:
>
> http://github.com/PDP-10/FOONEX
The web says:
"Initial checkin whilst I figure out what format the files are"
I took a quick look and guessed a little:
#include
typedef unsigned long long w36;
void pchar(char c)
{
c &= 0177;
if ((c < ' ') || (c == 0177)
> From: Josh Dersch
> Thought I'd share this fix with you all just in case someone in the
> future might make use of it.
To help disseminate it, I uploaded the fix to the Computer History wiki:
http://gunkies.org/wiki/CDU-710/M_disk_controller
> From: Lars Brinkhoff
> Th
Wishing all here a very Happy New Year!
Along with some other folks in 2017 I have decided I am going to ripple
through all of my vintage systems and warm their beautiful and friendly
caches.
I won't have a problem with my BBC Micro, Atari 1040ST, Amiga 500's, 2000's,
3000 and 4000 and the PowerM
Pics of what I'm trying to find at
http://www.retrocomputing.net/parts/compugraphic/mcs_keyb/
Bought one w/o kb or monitor and managed to locate a few floppies for it. CP/M
86 was available from CG, but
I don't think there's much chance of ever finding that.
Even just a dump of the microcontrol
The rounded corners may be more of an issue since unmodified Documation card
readers can't read them.
On 1/3/17 1:31 AM, jim stephens wrote:
> I don't personally care that there is a lot of crap printed on them, rather
> than the column indexes. The machines don't
> read that, and the top band
wonder if its the code on bitsavers I got from a Symbolics backup tape
On 1/2/17 10:33 PM, Lars Brinkhoff wrote:
> Appeared here:
>
> http://github.com/PDP-10/FOONEX
>
Josh Dersch wrote:
> Thought I'd share this fix with you all just in case someone in the
> future might make use of it.
There's no central repository for fixes like these?
On Mon, 2 Jan 2017, Jon Elson wrote:
(For reference, we were talking about my experiences with a Bendix G-15, not
an LGP-30.) So, I think the G-15 drum had a brass sleeve that might have
How should I know? Change the subject then!
Christian
Sorry for posting the National machine w/o an Ebay warning.
Anyway anyone that has a home keypunch will possibly be interested in
this guy.
I have ordered up a pile, as I doubt they will show up this cheap unless
someone takes it on themselves to manufacture them as the earlier
discussions s
In a message dated 1/3/2017 1:09:50 A.M. US Mountain Standard Time,
jwsm...@jwsss.com writes:
On 1/2/2017 11:26 PM, Brad H wrote:
> I brought the RFI thing up with him. No response. There is a legit Rev
1 there too asking $3500. I don't find Apple IIs below Rev 0 that
interesting any
On 1/3/17 12:09 AM, jim stephens wrote:
On 1/2/2017 11:26 PM, Brad H wrote:
I brought the RFI thing up with him. No response. There is a legit
Rev 1 there too asking $3500. I don't find Apple IIs below Rev 0
that interesting anymore, personally. I think even the legit guy
would struggle
On 1/2/2017 11:26 PM, Brad H wrote:
I brought the RFI thing up with him. No response. There is a legit Rev 1
there too asking $3500. I don't find Apple IIs below Rev 0 that interesting
anymore, personally. I think even the legit guy would struggle to get much
above $1500.
The vintagecomp
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