On 10/16/2015 9:03 PM, Rick Murphy wrote:
At 02:43 PM 10/16/2015, Joe wrote:
> .DIR
> HELP
> ADVNT
> !DARN THING DON"T TIME SHARE!
Funny, that was my original mission, to get ADVENT running on timeshare.
Great minds think alike! Multos8 won't timeshare it either.
That would be quite impressi
My guess is the RS232 is not involved in the initial-boot monitor, I wouldn't
necessarily be expecting anything from it at reset.
At this point I'd be aiming to figure out the keypad/display operation. The
firmware EPROM likely maps to the upper 2K of address space as the reset vector
is at FFF
Thanks so much Brent! Your insight on the 6821 proved to make this thing
run way better! Swapping 29 and 30, the system 'boots up' consistently and
properly. Before, you'd hit reset and then any key and it might come up or
it might not, or it might generate weird messages and then go dark. Now
On 2015-Oct-16, at 7:30 PM, Brad wrote:
> Here's some detail shots of the unit (including two of the front and back of
> the mainboard). Note the 6821 in the middle that has 'BAD' scratched into
> it.
>
> Front:
> http://s1381.photobucket.com/user/unclefalter/media/20151016_191325_zpscaec0dg8.jp
On 2015-Oct-16, at 4:14 PM, David Gesswein wrote:
> On Thu, Oct 15, 2015 at 12:02:26PM -0700, Brent Hilpert wrote:
>> On 2015-Oct-14, at 3:40 PM, Robert Ferguson wrote:
>
>> Eventually, we?d like to find or construct some solution for
>> mass storage, but we?re still at the point of checking out
At 02:43 PM 10/16/2015, Joe wrote:
> .DIR
> HELP
> ADVNT
> !DARN THING DON"T TIME SHARE!
Funny, that was my original mission, to get ADVENT running on timeshare.
Great minds think alike! Multos8 won't timeshare it either.
That would be quite impressive it it actually worked.
Does ETOS support
Here's some detail shots of the unit (including two of the front and back of
the mainboard). Note the 6821 in the middle that has 'BAD' scratched into
it.
Front:
http://s1381.photobucket.com/user/unclefalter/media/20151016_191325_zpscaec0
dg8.jpg.html
http://s1381.photobucket.com/user/unclefalte
On Thu, Oct 15, 2015 at 12:02:26PM -0700, Brent Hilpert wrote:
> On 2015-Oct-14, at 3:40 PM, Robert Ferguson wrote:
> Eventually, we?d like to find or construct some solution for
> mass storage, but we?re still at the point of checking out the VT278 itself.
>
If you haven't seen them these may
On 2015-Oct-16, at 9:16 AM, Brad wrote:
> Hey guys,
>
> Posting this to various forums in the hopes of finding someone in the know -
> I have this ASCI u68 system (6800 cpu) that I understand was used in
> educational environments. I kind of have it running but know little about
> assembly langua
On Fri, 16 Oct 2015, Brad wrote:
Thanks Henk,
I tried that. No prompt comes up with PUTTY on serial set at any baud
rate. Instead on the LED display I get a C, or an S sometimes.
Check for activity on lines 2 and 3, if it is a DB25.
You have not yet confirmed that you have it cabled correctl
From: "Jay West"
Subject: nut bars? ;)
<...>
Is there a modern source of nut bars that one could order with specific
thread size and # of holes (NEMA pattern)? Yeah, I know I'm being OCD and
How about something from here? http://www.ebay.com/bhp/rack-rails
I know they're not the floating-nu
>
> Thanks very much for this. Interesting that there is a fuse inside. You
> would think the casing would be designed to allow the fuse to be replaced
> somehow.
>
That's not the original fuse either. I managed to blow that one when I was
trying to find the original problem with the PSU. I was
>
> While I was fooling around with my ASCI I decided to test the serial
> connection to my PC. The only thing I had available was my CT-1024 terminal
> with the optional serial board. This unit never worked when I got it.
> Thought it was its ancient and probably non functional PSU, but after
>
Hi Rik,
I am pretty sure it is the CPU, the key had fallen out of the monitor
cable and I accidentally plugged it in backwards, and when I turned it I
almost immediately noticed the smell of magic smoke escaping. The +12V
regulator was wrecked, both the 723 and its pass transistor plus a
cou
Hi Brad,
I have a MEK6800 so not quite the same board but I know a little bit about
6800s ... I would suggest referring back to the original publications from
Mot ... there is a M6800 Applications Manual and a M6800 Programming Manual
... those are canonical and you should be able to find both on
There has to be some support for it in the ROM ... otherwise it won't do
anything ... and may in fact cause the system to behave strangely (having
an uninitialized ACIA just sitting there on the bus) ... I'm fairly new at
writing assembly code but I found it was a few hundred lines of code to
imple
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Peter
> Coghlan
> Sent: 16 October 2015 22:47
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: RE: Opening a DECserver 90M External PSU
>
> Robert Jarratt wrote:
> >
> > I tried to pr
Robert Jarratt wrote:
>
> I tried to pry mine open, but it seemed that if I kept going I would end up
> damaging it more than I would like. Do you have a picture of the opened
> casing I could see? That would help me to see how best to open it.
>
Here you go:
http://www.beyondthepale.ie/H7082-AB.
Rik,
Yes off-list will be good, and thanks for responding and checking.
Paul.
On 2015-10-16 6:34 PM, Rik Bos wrote:
Paul,
I'll look for it tomorrow.
Shall we continue this off-list.
-Rik
-Oorspronkelijk bericht-
Van: "Paul Berger"
Verzonden: 16-10-2015 21:47
Aan: "cctalk@classic
On 2015-10-16 20:43, Joe wrote:
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of ben
Sent: 2015-10-15 12:04 PM
To: cctalk@classiccmp.org
Subject: Re: PDP8 / ETOS
.DIR
HELP
ADVNT
!DARN THING DON"T TIME SHARE!
Funny, that was my original mission, to
Paul,
I'll look for it tomorrow.
Shall we continue this off-list.
-Rik
-Oorspronkelijk bericht-
Van: "Paul Berger"
Verzonden: 16-10-2015 21:47
Aan: "cctalk@classiccmp.org"
Onderwerp: Re: Processor card for a HP 9835.
Hi Rik,
As near as I can tell the connections are good, but I am
Definitely not socketed.
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Chuck Guzis
Sent: Friday, October 16, 2015 2:22 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: SWTPC CT1024
On 10/16/2015 02:15 PM, Brad wrote:
> Side note..
On 10/16/2015 02:15 PM, Brad wrote:
Side note.. I found some CT-1024 documentation online and it
suggested 110 baud. So I set it at that.. it generates nothing but
the occasional 8 now.
I'm interested to see how much of my issue is RAM... I've suspected
RAM from the start with a lot of this and
On 10/16/2015 01:48 PM, Brad wrote:
When I connected it to my PC running PUTTY via serial cable, I fully
expected it to do nothing. But to my surprise, it generates a
continuous stream of Js (punctuated by the odd H) on the PUTTY screen
if the RECV switch is off. If I hit Break, it generates a
Side note.. I found some CT-1024 documentation online and it suggested 110
baud. So I set it at that.. it generates nothing but the occasional 8 now.
I'm interested to see how much of my issue is RAM... I've suspected RAM from
the start with a lot of this and have some NOS MM2102N chips coming to
Often you have to press RETURN or SPACE a few
times to wake up the serial connection and set the
baud rate; if you put a scope on the RX and TX
lines, do you see the incoming signal from the
terminal and does anything get sent back?
Can you trace the RX and TX signals to see what
chips are u
While I was fooling around with my ASCI I decided to test the serial
connection to my PC. The only thing I had available was my CT-1024 terminal
with the optional serial board. This unit never worked when I got it.
Thought it was its ancient and probably non functional PSU, but after
hooking it u
Thanks Henk,
I tried that. No prompt comes up with PUTTY on serial set at any baud rate.
Instead on the LED display I get a C, or an S sometimes.
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Henk Gooijen
Sent: Friday, October 16, 2015 11:56 AM
T
Hi Rik,
As near as I can tell the connections are good, but I am pretty sure it
is the CPU, the key had fallen out of the monitor cable and I
accidentally plugged it in backwards, and when I turned it I almost
immediately noticed the smell of magic smoke escaping. The +12V
regulator was wrec
-Oorspronkelijk bericht-
From: Brad
Sent: Friday, October 16, 2015 8:27 PM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: RE: ASCI u68 (SystemX)
Many thanks. I'll take a quick look online just to see if I can save you
the trouble. I'm surprised at how little documenta
On 10/16/2015 11:00 AM, Chris Elmquist wrote:
On Friday (10/16/2015 at 08:53AM -0700), Chris Osborn wrote:
I will take some photos later today and round up some of the
documentation we had for them and then send another note with links
to same.
Strange--up until about a year ago, I had a cus
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of David
> Gesswein
> Sent: 2015-10-14 6:38 PM
> To: cct...@classiccmp.org
> Subject: Re: PDP8 / ETOS
>
> On Mon, Oct 12, 2015 at 11:06:25AM -0600, Joe wrote:
> > > On Mon, Oct 05, 2015 at 09:56:36AM -06
Many thanks. I'll take a quick look online just to see if I can save you the
trouble. I'm surprised at how little documentation there is for this thing.
As a general rule, does anyone know -- if you have a single board computer like
this with serial connector, is that 'live' all the time? Or
On 10/16/2015 12:47 PM, Rich Alderson wrote:
> From: Dave G4UGM
> Sent: Friday, October 16, 2015 4:01 AM
>
>> In fact DEC had little option. If they had not provided the X.25 software
>> they would have been unable to sell large machines to UK Universities as
>> support of Janet was required to ge
The Heathkit ET-3400 (another SBC trainer) also used the M6800 CPU. Now I
realize that the two machines probably have fairly different ROMs, but
otherwise some of the 3400 materials / programs should cross-over to the
u68. It might even simply be a matter of translating ROM calls..
Anyway, I have
On Friday (10/16/2015 at 08:53AM -0700), Chris Osborn wrote:
>
> On Oct 16, 2015, at 8:18 AM, dwight wrote:
>
> > I do still have some 16 hole 5-1/4 punches left. ( anyone want one? )
>
> I’d love to see a picture of one just to see how it was made and how it
> clamps to the disk.
I will take
From: Dave G4UGM
Sent: Friday, October 16, 2015 4:01 AM
> In fact DEC had little option. If they had not provided the X.25 software
> they would have been unable to sell large machines to UK Universities as
> support of Janet was required to get central government funding.
"Damn it, Janet!"
A nine track drive would certainly not work with an ACARD adapter- they are
"intelligent" designed for mass storage. And on top of that the only adapters I
know of go the wrong way (IDE devices on a SCSI bus), though I haven't researched the
reverse.
Derp yea. Forgot about that. I've only use
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Adrian
> Graham
> Sent: 16 October 2015 18:09
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Opening a DECserver 90M External PSU
>
> >> longer this time though.
> >>
> >> Now I
>> longer this time though.
>>
>> Now I find that the privileged password is not what I thought it is...
>>
>> Regards,
>> Peter Coghlan.
>
> I tried to pry mine open, but it seemed that if I kept going I would end up
> damaging it more than I would like. Do you have a picture of the opened
> ca
A nine track drive would certainly not work with an ACARD adapter- they are
"intelligent" designed for mass storage. And on top of that the only adapters I
know of go the wrong way (IDE devices on a SCSI bus), though I haven't
researched the reverse.
I gave Josh Dersch a Xircom USB to SCSI not
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Peter
> Coghlan
> Sent: 15 October 2015 23:47
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Opening a DECserver 90M External PSU
>
> Back in April, I wrote:
> > Robert Jarratt w
Hey guys,
Posting this to various forums in the hopes of finding someone in the know -
I have this ASCI u68 system (6800 cpu) that I understand was used in
educational environments. I kind of have it running but know little about
assembly language programming, etc. Or the unit itself. Have a
Dwight wrote
--
I'd makes some slight changes if I did it again.
--
How about support for 8"? ;)
J
On Oct 16, 2015, at 8:18 AM, dwight wrote:
> I do still have some 16 hole 5-1/4 punches left. ( anyone want one? )
I’d love to see a picture of one just to see how it was made and how it clamps
to the disk.
--
Follow me on twitter: @FozzTexx
Check out my blog: http://insentricity.com
I do still have some 16 hole 5-1/4 punches left. ( anyone want one? )
Actually it was stainless and Delrin.
I'd makes some slight changes if I did it again.
It really needed two alignment pins.
It didn't need to have the envelope removed. One rotated the envelope to
expose the next hole location.
Horrific hijacking topic-drift but I remember your name from a recent
google... ages ago you were trying to get an IBM 9348 9-track working
with a USB to SCSI converter... did you succeed? What did you use? I'm
in exactly the same position!
Thanks
Mike
*AWESOME* You just reminded me of a project
Thanks for posting this.
Very interesting and it was fun to see names that I have not heard for
nearly 30 years. (I worked on system software for Burroughs/Unisys from
86-89.) However, it does have a couple of errors (e.g., Burroughs and
Sperry merged in 86, not 85).
alan
On 10/14/15 6:33 A
* William Donzelli [151015 18:00]:
> > I could have easily pitched a tent amount the electronics.
>
> Yeah, I get excited about liquid cooled mainframes, too.
>
> --
> Will
ROFLMAO!
Horrific hijacking topic-drift but I remember your name from a recent
google... ages ago you were trying to get an IBM 9348 9-track working
with a USB to SCSI converter... did you succeed? What did you use? I'm
in exactly the same position!
Thanks
Mike
On Fri, Oct 16, 2015 at 6:59 AM, wrote:
>
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Johnny
> Billquist
> Sent: 16 October 2015 11:38
> To: cctalk@classiccmp.org
> Subject: Re: Contents of DEC 8" floppies
>
> On 2015-10-16 10:08, Dave Wade wrote:
> >
> >
> >> -Original Message
On 2015-10-16 10:08, Dave Wade wrote:
-Original Message-
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Johnny
Billquist
Sent: 16 October 2015 09:07
To: cctalk@classiccmp.org
Subject: Re: Contents of DEC 8" floppies
On 2015-10-16 08:14, Mark J. Blair wrote:
I have s
Amazing!
I had not seen this - a great chronicle!
It is important for all the folks to write up
what they did... if they do not there will be no record...
Ed# - _www.smecc.org_ (http://www.smecc.org)
In a message dated 10/14/2015 6:34:04 A.M. US Mountain Standard Time,
lpro...@gmail.co
> -Oorspronkelijk bericht-
> Van: cctalk [mailto:cctalk-boun...@classiccmp.org] Namens Paul Berger
> Verzonden: donderdag 15 oktober 2015 16:45
> Aan: General Discussion: On-Topic Posts Only
> Onderwerp: Processor card for a HP 9835.
>
> I am searching for a CPU card for a 9835 to replac
On 2015-Oct-15, at 11:20 PM, Brad wrote:
> Thanks for this great explanation. So would anyone doing computing back in
> the early 70s have used a 5 level machine?
As others mentioned, there was some use of 5-level machines with hobbyist
computers in the 70s.
5-level machines were available as su
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Johnny
> Billquist
> Sent: 16 October 2015 09:07
> To: cctalk@classiccmp.org
> Subject: Re: Contents of DEC 8" floppies
>
> On 2015-10-16 08:14, Mark J. Blair wrote:
> > I have some unused 3M blank pr
On 2015-10-16 08:14, Mark J. Blair wrote:
I have some unused 3M blank preformatted RX02 diskettes. Would those be usable
in an RX01 drive?
Yes. The RX01 and RX02 is the same format. It's only the data part of
the sector that differs.
I don't know what the VAX PSI software is, but I'm guess
In Volume 1 Issue 6 August 1979 of the '68' Micro Journal I see there is a
routine to bit-bang 5-level code to a Teleprinter.
.. I know that's late 70's but in the UK older 5-Level machines were
available cheaply as the GPO (General Post Office)
moved from older Creed-7's onto Creed 444's for i
If memory serves me correctly PSI is the X.25 packet switching software. If
it exists I would like a copy, assuming I can get the matching version of
VMS...
Dave
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Mark J.
> Blair
> Sent: 16 October 201
the red apple ref book had a 5 level running off game port or???
something as I rememberEd#
In a message dated 10/15/2015 11:20:28 P.M. US Mountain Standard Tim,
unclefal...@yahoo.ca writes:
Thanks for this great explanation. So would anyone doing computing back
in
the early 70
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