[net.std] National Replacement Character Sets

ed@fluke.UUCP (Ed Jennings) (07/20/85)

Is there any standard that describes what DEC calls National Replacement
Character Sets (NRC sets) ?  DEC provides this feature in the VT220 terminal.
I have not been able to find an ANSI or ISO standard that contains any
reference to NRC sets.

Thanks
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minow@decvax.UUCP (Martin Minow) (07/24/85)

Page 2-1 and 2-2 of the VT220 programmer reference manual contain
a list of seven Ansi and ISO standards.  I believe you might
want to start with ISO 2022 and 6429 (but I'm not certain if
they have what you want).

In general, National Replacement Character Sets are standardized
by a National Standards Institute (such as ANSI in the USA) and
registered by that body with ISO and/or ECMA (European Computer
Manufacturers Association).  ISO (I think) assigns intermediate
and final escape sequence characters that are used to select
that character set.  This is described in Chapter 4 of the
VT220 manual.

The thing we all call "Ascii" is really the United States
National Replacement Character Set.

Martin Minow
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