18 Nov
2012
18 Nov
'12
9:58 a.m.
From: Chuck Guzis
Sent: Friday, November 16, 2012 3:54 PM
The 1400--one of the more awful, but cheap, terminals
in the terminal
universe. For some odd reason, it used tilde (hex 7E) as the escape
lead-in character.
Remember that in the days of Teletype, ALTMODE was character code 175 or
176 (Umm, 7D or 7E for the octally challenged). Hazeltine was using the
ALTMODE character to introduce command codes, as intended. Only later
was ALTMODE redefined to be 033 (1B) = ESCAPE.
Rich Alderson
Vintage Computing Sr. Systems Engineer
Vulcan, Inc.
505 5th Avenue S, Suite 900
Seattle, WA 98104
mailto:RichA at vulcan.com
mailto:RichA at LivingComputerMuseum.org
http://www.LivingComputerMuseum.org/