From: Pim Blokland (pblokland@planet.nl)
Date: Sat May 17 2003 - 09:29:39 EDT
James Kass schreef:
>> Now this is true, because the controls have double meanings (e.g.
0x0D
>> is both a carriage return and an eighth note).
>
> Is it? Isn't the eighth note simply a unique graphic used in the
DOS
> font to display a single glyph for 0x0D where appropriate?
If it was, I presume they would have used a CR arrow for a picture
in that position. And they could have used other "control pictures"
for other codes below 0x20, such as a musical note for 0x07, etc.
The fact that they didn't, shows they just wanted to expand the
character set. That's why the pictures in those positions include
pargraph signs, bullets etc.
Besides, the original IBM PC BIOS had separate functions for those
two functionalities - characters or control codes (i.e. some
functions output an inverse white circle for a 0x0A, while others do
a line feed).
Pim Blokland
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