In all my years of electronics troubleshooting, I have never spent hours
under a microscope :-) OK, it was easier using the RTL of the Univac
418, but even today the parts are big enough to see!
On 26/10/2019 17:42, Fred Cisin via cctalk wrote:
Hidden behind a NYTimes paywall, . . .
news yesterday that the 8 inch drive nuclear weapions system has now
been updated.
On Sat, 26 Oct 2019, John Foust via cctalk wrote:
And what media or method did they upgrade to? Top secret?
Here's a different version of the story:
<https://www.c4isrnet.com/air/2019/10/17/the-us-nuclear-forces-dr-strangelove-era-messaging-system-finally-got-rid-of-its-floppy-disks/>https://www.c4isrnet.com/air/2019/10/17/the-us-nuclear-forces-dr-strangelove-era-messaging-system-finally-got-rid-of-its-floppy-disks/
Thanks for the URL
Amusing that requiring repair technicians having ability to "solder
metal" was one of the major problems.
The USUAL progression from 8" floppies was to 35 track (later 40
track) single sided (later double) FM single density (later MFM) 48tpi
(later 96tpi) 5.25".
But, an easier conversion would be straight to "1.2M", which would
need few hardware changes other than a custom cable.
(In fact, the first Mitsubishi 1.2M drive that I got had a 50 pin
connector; later 4854s had a 34 pin connector)
But, why not cards or paper tape?
Or, if they want to expand speed and capacity, ST506, or even ST412.
They could go to thumb drives, such as Stuxnet
Or, was the main goal to give it a publicly accessible IP address?
("War Games" is playing on MPLEX right now)
Besides convenient recreational Facebook access for staff technicians,
why is web browsing implemented on MRI control computers or on WOPR?
BTW, the superceded drives and media will remain "classified" until
they crumble, and our surplus channels will not get a sudden major
influx of available media.
--
Nigel Johnson
MSc., MIEEE
VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
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