Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 5/3/83; site utcsrgv.UUCP
Path: utzoo!utcsrgv!info-mac
From: info-mac@utcsrgv.UUCP (info-mac)
Newsgroups: ont.micro.mac
Subject: VT100 Origin Mode in MacTerminal
Message-ID: <4476@utcsrgv.UUCP>
Date: Tue, 5-Jun-84 02:09:58 EDT
Article-I.D.: utcsrgv.4476
Posted: Tue Jun  5 02:09:58 1984
Date-Received: Tue, 5-Jun-84 02:21:08 EDT
Sender: peterr@utcsrgv.UUCP
Organization: CSRG, University of Toronto
Lines: 21

Date: Mon 4 Jun 84 14:28:18-PDT
From: Andrew Sweer 
Subject: VT100 Origin Mode in MacTerminal
To: Info-Mac@SUMEX-AIM.ARPA

	It looks like there is a subtle bug in the way MacTerminal
emulates a VT100. I've been using MacTerminal version -0.15X, 4/18/84.
The bug shows up when doing "reverse windowing" in TVEDIT, a display
editor devoloped at Stanford.

	According to the VT100 documentation, Setting or Resetting the
Origin Mode (via ESC [?6h and ESC [?6l respectively) is supposed to move
the cursor to the new home postion. It does on a real VT100, but not
on the Mac. This causes an ensuing Reverse Index (ESC M) to fail because
the cursor is not left at the top margin, thereby avoiding the scrolling
down operation.

Andy
-------