On 5/9/2016 10:23 PM, Chuck Guzis wrote:
On 05/09/2016 01:33 PM, Sean Caron wrote:
I found some interesting information about it in the Appendices of
this technical report:
http://misclab.umeoce.maine.edu/education/VisibilityLab/reports/SIO_82-27.pdf
Apparently the product was used in sev
On 05/09/2016 01:33 PM, Sean Caron wrote:
> I found some interesting information about it in the Appendices of
> this technical report:
>
> http://misclab.umeoce.maine.edu/education/VisibilityLab/reports/SIO_82-27.pdf
>
>
>
> Apparently the product was used in several documented data
> acquisit
Yes thanks! I was looking at that. However, the model show there is
slightly different than mine.. mine doesn't have the keypad on the front.
It only has a power and reset key. I assume as Chuck suggested to me
previously there is a way to pass commands via serial to get it to do
something.. but
On Mon, 9 May 2016, Brad H wrote:
Hi there,
I have a Memodyne M-80 Digital Cassette 'Computer' which, in talking to
people more experienced than me, seems to be just a digital cassette
recorder. Googling around there seems to be very little info out there,
although one paper written about th
Hi guys,
I have a Memodyne M80 'Cassette Computer'. From what I've gathered, it's
basically just a digital tape drive (it has about 5 boards in it, including
a Z80 board with an emprom marked '1200 baud', although from one sales doc
it looks like it could have been built out to be a 'general p
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Swift
> Griggs
> Sent: 09 May 2016 22:37
> To: General Discussion: On-Topic and Off-Topic Posts
>
> Subject: "Retro Repair" key electronics skills?
>
>
> I figure I'm good for about eighty hours or so
>Mouse wrote:
Note that PDP-11 autoincrement and autodecrement exist only when
operating on pointers that are being indirected through, and even then
only when the pointers are in registers. C ++ and -- work fine on
things other than pointers, and on pointers when not indirecting
through them.
>Dave Wade wrote:
Fortran has an EQUIVALENCE statement, COBOL has redefines. Both allows the
subversion of types at the drop of a hat.
I can think of two examples which were not so much subversion of types
as they were a lack of language flexibility:
(a) Very early in my FORTRAN experience,
On 10 May 2016 at 03:12, Eric Christopherson wrote:
> Gmail always tells me COURYHOUSE's messages would have been treated as
> spam, if I hadn't specifically exempted the messages of this list from ever
> being blocked. I wonder if Google has a prejudice against aol.com
> addresses? :)
No, it's
On 2016-May-09, at 5:20 PM, Tapley, Mark wrote:
> On May 9, 2016, at 4:21 PM, Mouse wrote:
>
>> I would tend do something like inserting a 100K or
>> 1M resistor in the path to ground. ...
>>
>> If I'm off base, I'm sure someone will correct me!
>
> I strongly second Mouse’s recommendatio
On Sun, May 8, 2016 at 10:59 PM, Adrian Stoness
wrote:
> all your msgs are going into my spam box ust noticed this
>
Gmail always tells me COURYHOUSE's messages would have been treated as
spam, if I hadn't specifically exempted the messages of this list from ever
being blocked. I wonder if Googl
On May 9, 2016, at 4:21 PM, Mouse wrote:
> I would tend do something like inserting a 100K or
> 1M resistor in the path to ground. ...
>
> If I'm off base, I'm sure someone will correct me!
I strongly second Mouse’s recommendation (and to you too, Adrian).
Suddenly placing a large char
Hi guys,
I have a Memodyne M80 'Cassette Computer'. From what I've gathered, it's
basically just a digital tape drive (it has about 5 boards in it, including
a Z80 board with an emprom marked '1200 baud', although from one sales doc
it looks like it could have been built out to be a 'general p
On 09/05/2016 22:15, "Swift Griggs" wrote:
> On Mon, 9 May 2016, Adrian Graham wrote:
>> Thanks for that, I now know it's vertical deflection which is adjusted
>> by A102 on the monitor board so I'm just about to give it a tweak once I
>> find my plastic trimmers and a screwdriver small enough to
On 09/05/2016 22:21, "Mouse" wrote:
>> 2. Make darn sure you discharge the tube before you work on it.
>
> I've seen it said that discharging with a very low resistance path -
> like a piece of wire - can damage things. I don't know how much risk
> there really is, but I would tend do something
Hi,
I have an InterSystems DPS-1 chassis in pretty good condition
coming my way and I'd like to put an IA-2000 CPU in it. Anybody
have one they might consider selling?
Thanks,
Bill S.
I figure I'm good for about eighty hours or so of reading and fooling
around with electronics before I'll want to move onto a different hobby
for a while (I rotate through a whole bunch). That's my normal MO. So, I'm
wondering what kind of skills I could build with that time, once I get
starte
> 2. Make darn sure you discharge the tube before you work on it.
I've seen it said that discharging with a very low resistance path -
like a piece of wire - can damage things. I don't know how much risk
there really is, but I would tend do something like inserting a 100K or
1M resistor in the pa
On Mon, 9 May 2016, Adrian Graham wrote:
> Thanks for that, I now know it's vertical deflection which is adjusted
> by A102 on the monitor board so I'm just about to give it a tweak once I
> find my plastic trimmers and a screwdriver small enough to get the top
> off, it's the only VT1xx I have
On 09/05/2016 15:03, "Swift Griggs" wrote:
> On Sun, 8 May 2016, Adrian Graham wrote:
>> Anyhoo, the VT101's screen is showing the
>> stretch-at-top-compress-at-bottom issue, is that adjustable using the
>> troubleshooting guide in the technical reference or am I looking at
>> replacing some caps
On Mon, May 9, 2016 at 11:23 AM, Mattis Lind wrote:
> 2016-05-09 19:42 GMT+02:00 Eric Smith :
>
> > On Mon, May 9, 2016 at 5:13 AM, Mattis Lind
> wrote:
> > > Last time I had a PROM failure is what the internal address decoding
> that
> > > failed which was easily seen as certain patterns repeat
2016-05-09 19:42 GMT+02:00 Eric Smith :
> On Mon, May 9, 2016 at 5:13 AM, Mattis Lind wrote:
> > Last time I had a PROM failure is what the internal address decoding that
> > failed which was easily seen as certain patterns repeated all the time
>
> Not impossible, but it seems more likely that o
Hi there,
I have a Memodyne M-80 Digital Cassette 'Computer' which, in talking to
people more experienced than me, seems to be just a digital cassette
recorder. Googling around there seems to be very little info out there,
although one paper written about their use with scientific equipment
de
On Mon, May 9, 2016 at 5:13 AM, Mattis Lind wrote:
> Last time I had a PROM failure is what the internal address decoding that
> failed which was easily seen as certain patterns repeated all the time
Not impossible, but it seems more likely that one of the address input
pad buffers failed.
I must be thinking of a different model.
On May 8, 2016 9:33 PM, "Eric Smith" wrote:
> On Sun, May 8, 2016 at 9:57 AM, Pete Lancashire
> wrote:
> > I thought the Tektronix DAS used a custom tri-color crt, where the
> > blue phosphor was replaced with yellow.
>
> It is custom, and it is tri-colo
On Sun, 8 May 2016, Adrian Graham wrote:
> Anyhoo, the VT101's screen is showing the
> stretch-at-top-compress-at-bottom issue, is that adjustable using the
> troubleshooting guide in the technical reference or am I looking at
> replacing some caps?
It sounds like a problem with what they call
At 01:30 AM 5/9/2016, Rod Smallwood wrote:
>nope it is working
To see if the list is working check the archives.
Dale H. Cook, Roanoke/Lynchburg, VA
Osborne 1 / Kaypro 4-84 / Kaypro 1 / Amstrad PPC-640
http://plymouthcolony.net/starcity/radios/index.html
2016-05-09 11:29 GMT+02:00 Christian Corti :
> On Sat, 7 May 2016, Mattis Lind wrote:
>
>> What are the failure modes of PROMs?
>>
>
> I had a PROM fail on the 11/45 CPU board. This PROM is responsible for the
> Conditional Codes handling. There was one output that had failed. I think
> that the o
On Sat, 7 May 2016, Mattis Lind wrote:
What are the failure modes of PROMs?
I had a PROM fail on the 11/45 CPU board. This PROM is responsible for the
Conditional Codes handling. There was one output that had failed. I think
that the output drivers may fail, because I was able to temporarily
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