24 May
2016
24 May
'16
12:13 p.m.
On 05/24/2016 11:39 AM, Eric Smith wrote:
On Tue, May 24, 2016 at 12:25 PM, Paul Koning
<paulkoning at comcast.net> wrote:
IBM's TROS and Core Rope Memory use the same principle, but the
physical construction is significantly different. Core rope memory
was very labor-intensive to manufacture, while TROS was not.
There's a photo here;
http://www.cs.sun.ac.za/museum/memory.html
I seem to recall that reworking the 360/30 microprogramming was
preferred by tinkerers over the 360/40 was primarily that CROS was
easier to work with than TROS.
I don't recall what the RCA Spectrolas used.
--Chuck
On May
24, 2016, at 2:07 PM, Chuck Guzis <cclist at sydex.com>
wrote: ...and the "transformer" ROS used on the 360/40 (and
others).
You mean "Core rope memory"?