Re: Changes to my ISIRI-3342 tables

From: Roozbeh Pournader (
Date: Fri Dec 10 1999 - 13:26:19 EST

On Fri, 10 Dec 1999, Mark Leisher wrote:

> A. Does 3342 recognize the range 0x00-0x1F,0x7F as ASCII control characters?

It only tells that "The extension of ASCII code is done as specified in
the ISO 2022:1986 standard". I think this means the recognition. There is
also an informative appendix mentioning C0, and G0, so they are

Based on my experience, the users only use the 0x00--0x1F controls and not
the upper controls part of the standard. This was

> B. 3342 has what look like an extra set of control characters between
> 0x80-0x9F. Are these the same as the control characters in
> 0x00-0x1F,0x7F?

The character description part of the standard starts with describing the
characters I know as ASCII controls (SOH, STX, ...) with the same meaning
I know for ASCII controls, but assigning those the codes 0x81, 0x82, etc.

The informative appendix has a figure which shows the 8-bit space,
with C0, G0, C1, and G1 parts separated.

> If 0x80-0x9F,0xFF are interpreted the same as 0x00-0x1F,0x7F, then the
> mappings should be added to your table.
> If 0x80-0x9F,0xFF are interpreted in a special way for Persian, different
> from 0x00-0x1F,0x7F, then one possibility is to use the Private Use Area.
> -----------------------------------------------------------------------------
> Mark Leisher
> Computing Research Lab I have never made but one prayer to God,
> New Mexico State University a very short one:
> Box 30001, Dept. 3CRL "Oh Lord, make my enemies ridiculous."
> Las Cruces, NM 88003 And God granted it. -- Voltaire, letter

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