From: John Cowan (cowan@ccil.org)
Date: Tue Nov 23 2004 - 20:56:27 CST
Antoine Leca scripsit:
> Sorry, no: there is no requirement to clear it.
> You are assuming something about the way data are handled. When you handle
> ASCII data using octets, you can perfectly, and conformantly, keep some
> other "data" (being parity or whatever) inside the 8th bit; so with even
> parity AT SIGN will be managed as 192, without any kind of problem (for
> you).
Indeed, the DEC PDP-8 stored ASCII data with the high bit always set, for
compatibility with the way in which ASR-33 Teletypes generated ASCII.
So I grew up thinking of 'A' as 301 (octal). I believe that PR1ME
computers did this too.
-- But you, Wormtongue, you have done what you could for your true master. Some reward you have earned at least. Yet Saruman is apt to overlook his bargains. I should advise you to go quickly and remind him, lest he forget your faithful service. --Gandalf John Cowan <cowan@ccil.org>
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