an odd question

From: McFadden, Mike <mmcfadden_at_cmh.edu>
Date: Thu Aug 16 15:56:36 2001

I know that the control key on the DEC terminals stripped off the high order
bit on the character that followed.

The Control-G series would sound the bell on either the VT100 or LA34.

the G character is an octal 107
Control-G sends out an octal 007 which is the bell
All sorts of modem, printer, and terminal combinations used the entire ASCII
character set.

When we replaced our VT52's we found out you could send out series of cursor
control codes on VT100's to move the cursor and then output a character.
Early star trek games on video terminals used this instead of sending out
spaces and characters. You could also plot line graphs and barcharts using
control codes.

Mike
mmcfadden_at_cmh.edu
Received on Thu Aug 16 2001 - 15:56:36 BST