On 10/26/2020 10:50 PM, nico de jong via cctalk wrote:
IBM 360/40 with 4 tapedrives.
the 3420 drives and I suspect their predecessors which were more common
on the 360s used
one light bulb to run the light from one bulb all over the drive.
The 3420's we had had a big box of spaghetti tubing
On 10/26/2020 11:24 PM, Guy Sotomayor via cctalk wrote:
It took us a while to figure several things out:
1) all of the machines were run with their covers off
I asked one of the mechanical / packaging guys at Microdata one time
what the hardest part
of making the cabinets and mechanical syst
On 10/27/2020 12:50 AM, nico de jong via cctalk wrote:
Hi all,
Back in the early 70's I was an operator on an IBM 360/40
with 4 tapedrives. Nobody could understand that sometimes
a tape transfer would stop saying "end of tape", mainly
around 3 PM,
It was also well-known that you should not al
> -Original Message-
> From: cctalk On Behalf Of Jon Elson via
> cctalk
> Sent: 27 October 2020 14:51
> To: nico de jong ; gene...@ezwind.net;
> discuss...@ezwind.net:On-Topic and Off-Topic Posts
>
> Subject: Re: Strange magtape anecdote
>
> On 10/27/2020 12:50 AM, nico de jong via cc
I have one of the NC4016 boards ( I forget which one ). I added a XT floppy
controller and a XT MFM disk controller. I made some other hardware for doing
byte stuff faster. Using address -1, I could access it faster as a short
literal. I had a 8 bit barrel shifter there. It came in handy for the
> On Oct 27, 2020, at 11:08 AM, Dave Wade G4UGM via cctalk
> wrote:
>
> ...
> I remember when doing standby power generator tests we had to remember to
> off-line all the drives at end of job, other wise they all tried to rewind at
> the same time
> .. and the generator could comfortabl
Hello Paul,
Am 27.10.2020 um 17:33 schrieb Paul Koning via cctalk :
> The motor start surge current is a lot higher than the steady state current
I fondly remember my Seagate Elite 9GB (5.25“ double height), nominal 5400 RPM.
Power applied, it slowly spins until a certain speed and then switche
Dwight,
I would be very interested in your NC4016 experience. I did collect a
NC4016 STD bus board a while ago from ePay, and have successfully spoken to
it via a terminal - It would be fun to add storage, but I have no idea
where to start :-)
And no doco..:-/
Kindest regards,
Doug Jackson
