3 Jul
2022
3 Jul
'22
6:08 a.m.
On Sat, Jul 2, 2022 at 7:02 PM Mark Sutton <mes(a)lazo.ca> wrote:
/2 6:05:30 AM PDT, Ori Idan
<ori(a)heliconbooks.com> wrote:
ASCII reserved four characters, ^Q through ^T, for unspecified device
controls. The ASR 33 Teletype, which had a built-in paper tape reader and
punch, allowed programmatic control of these devices using these
characters: ^Q started the reader (assuming paper tape was in it) and ^S
stopped it. In classic Teletype use, the protocol was bidirectional. (By
the same token, ^R started the punch, which meant that characters sent to
the terminal were punched as well as printed, and ^T stopped it.
Some DEC OSes used ^T to print a single-line status of the current
process. I do not know why ^C (end of text, as opposed to ^D which is end
of transmission) took on its present role, but it was definitely already
true in early DEC OSes.
On Thu, Jun 30, 2022 at 7:38 PM Paul Winalski <paul.winalski(a)gmail.com>
wrote:
\
o why CTRL/S and CTRL/Q are used for flow control
in a shell command
line session
Also would be happy to know.
>
>>
>> o why an application memory dump after an application crash is called
>> a core file
>>
>
See https://en.wikipedia.org/wiki/Magnetic-core_memory