>From memory, so please forgive a mistake or two: The TB-49 Wings would Yaw
(side to side motion) while in flight, sometimes just enough to make the
crew seasick, sometimes enough to be dangerous when in formation with other
aircraft and always unable to stay on track to be a useful bomber. I
rec
A few more gotchas to be aware of:
Some of the operating systems on TRS-80 started the sector numbering at 0.
Therefore, depending on which operating systems were used, you could have
sectors numbered 0 - 17 , or 1 - 18. That can be confusing if your PC
can't read the first sector, but tells
From: Doug Ingraham: Thursday, June 25, 2015 4:10 PM
On Thu, Jun 25, 2015 at 10:22 AM, Vincent Slyngstad wrote:
The only other concern I've had during my thought experiments
along this line related again to the current/power involved. The
device is likely to become difficult to cool if you achi
On Thu, 25 Jun 2015, Alexandre Souza wrote:
Dear sirs,
you'll have to settle for us.
Imagedisk is my savior, and I image all kind of disks I know with it :)
But now I got a pair of TRS-80 model III single-sided disks. How do I
image it using imagedisk?
Same as every other disk that you
On Thu, Jun 25, 2015 at 10:22 AM, Vincent Slyngstad <
v.slyngs...@frontier.com> wrote:
> Please correct me if I'm talking complete bulls**t. This is all
>> new to me.
>>
>
> The only other concern I've had during my thought experiments
> along this line related again to the current/power involved.
On Thu, 25 Jun 2015, Alexandre Souza wrote:
Dear sirs,
Imagedisk is my savior, and I image
all kind of disks I know with it :)
But now I got a pair of TRS-80 model
III single-sided disks. How do I image
it using imagedisk? Can I use a
double-sided floppy drive to image it?
Or do I
Dear sirs,
Imagedisk is my savior, and I image all kind of disks I know with it :)
But now I got a pair of TRS-80 model III single-sided disks. How do I
image it using imagedisk? Can I use a double-sided floppy drive to image it?
Or do I need to put the single-sided drive on my PC? P
> On Jun 25, 2015, at 2:01 PM, Noel Chiappa wrote:
>
>> From: Paul Koning
>
>>> Right, but the very similar QBUS does have terminations (of a sort -
>>> the rules for when you need terminations on QBUS extensions are so
>>> complex that I don't really grok them yet) 'in the middle'
>
>> That d
> On Jun 25, 2015, at 1:49 PM, tony duell wrote:
>
...
>
>> I still have a photo copied out of the 1980s magazine RSTS Professional,
>> which claimed to show how to convert
>> thick to thin Ethernet. The simple answer is “with a coax connector
>> adapter” since both are 50 ohm coax. T
> From: Paul Koning
>> Right, but the very similar QBUS does have terminations (of a sort -
>> the rules for when you need terminations on QBUS extensions are so
>> complex that I don't really grok them yet) 'in the middle'
> That doesn't seem likely. ... the definition of 'te
> >> From: John Wilson
> >
> >> I chose the digital version of EE as my major precisely because I knew
> >> I'd flunk Fields and Waves. Transmission lines are black magic as far
> >> as I'm concerned!
I really do fail to see how you can possibly understand or design digital
systems
without unders
On 2015-06-25 13:31, Liam Proven wrote:
On 24 June 2015 at 14:19, Johnny Billquist wrote:
Oh, I know. I'm from Sweden. We had a very big scandal where 5 containers
with a VAX-11/782 and peripherials or something like that was found under
strange circumstances. When the whole thing started to be
[M9014]
[One row on each Berg is ground]
> Ah, hadn't noticed that! But then again, I hadn't looked at them closely
> yet! :-) Yes, they do connect to ground - all the UNIBUS ground pins are
> ganged together, and connected to the A-row Berg pins on all 3 connectors.
I am not at all surprised th
> On Jun 25, 2015, at 1:02 PM, Noel Chiappa wrote:
>
>> From: tony duell
>
> ...
>>> I was wondering if maybe the M9015 was an M9014 with termination
>>> resistors, or something (the way the QBUS versions come with and with
>>> termination)
>
>> I would be very surprised. Unibus is normally te
> From: tony duell
> There are 3 40 pin Berg headers, one row of each appears to be ground
Ah, hadn't noticed that! But then again, I hadn't looked at them closely
yet! :-) Yes, they do connect to ground - all the UNIBUS ground pins are
ganged together, and connected to the A-row Berg pin
> On Jun 25, 2015, at 12:02 PM, Noel Chiappa wrote:
>
>> From: John Wilson
>
>> I chose the digital version of EE as my major precisely because I knew
>> I'd flunk Fields and Waves. Transmission lines are black magic as far
>> as I'm concerned!
>
> I too have a hard time with analog in general
From: David Griffith: Thursday, June 25, 2015 4:16 AM
On June 24, 2015 1:27:56 AM PDT, Pontus Pihlgren wrote:
I like to think that you could shrink the computer by, at least, a
factor of four. Probably smaller.
I don't think thatt making the flip-chips double-sided will be desirable. I
want
On 2015-06-25 12:02 PM, Noel Chiappa wrote:
> From: John Wilson
> I chose the digital version of EE as my major precisely because I knew
> I'd flunk Fields and Waves. Transmission lines are black magic as far
> as I'm concerned!
I too have a hard time with analog in general,
> From: John Wilson
> I chose the digital version of EE as my major precisely because I knew
> I'd flunk Fields and Waves. Transmission lines are black magic as far
> as I'm concerned!
I too have a hard time with analog in general, but transmission lines I seem
to be OK with.
The
>> If it's any help I pulled an M9014 out of the Unibus Out slot of my
> > 11/730. There's currently an M9302 in there.
>
> Very interesting! Thanks for the data. This seems to indicate that the M9014
> could function as either end of the cable.
Somewhere I have the expansion box that wen
> From: Alan Perry
> FYI, in my 750, the UNIBUS expansion has a L0010 in the main cabinet
> and a M9014 in the expansion cabinet.
> From: tony duell
> If it's any help I pulled an M9014 out of the Unibus Out slot of my
> 11/730. There's currently an M9302 in there.
Very
On Thu, Jun 25, 2015 at 04:16:03AM -0700, David Griffith wrote:
>
> I don't think thatt making the flip-chips double-sided will be
> desirable. I want to shrink the machine and minimize any need
> to reengineer the backplane. By the way, can the backplane of
> a straight-eight be realized as
> On Jun 25, 2015, at 7:16 AM, David Griffith wrote:
>
> ...
> I don't think thatt making the flip-chips double-sided will be desirable. I
> want to shrink the machine and minimize any need to reengineer the backplane.
> By the way, can the backplane of a straight-eight be realized as a PCB?
Good info David. Thanks once more.
-
"J. David Bryan" said:
Subject: Re: HP 2113e Battery resistor
>I might put NiMH batteries instead
That may not be advisable, given the continuous constant-current trickle
charger in the CPU power supply. The Panasonic "Nickel Metal Hydride
Te
On 24 June 2015 at 14:19, Johnny Billquist wrote:
> Oh, I know. I'm from Sweden. We had a very big scandal where 5 containers
> with a VAX-11/782 and peripherials or something like that was found under
> strange circumstances. When the whole thing started to be investigated
> suddenly no one seeme
On June 24, 2015 1:27:56 AM PDT, Pontus Pihlgren wrote:
> On Wed, Jun 24, 2015 at 06:10:38AM +, d...@661.org wrote:
> > On Tue, 23 Jun 2015, Phil Budne wrote:
> >
> > >If I were going thru the trouble, I'd want build a TX-0 clone!
> >
> > I think it would me more interesting to build a repli
It looks like you've refactored/consolidated a bit - or were there components
you hadn't installed at VCF-E?
We installed the patch panels. No other change since VCF East.
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