info-mac@utcsrgv.UUCP (info-mac) (06/05/84)
Date: Mon 4 Jun 84 14:28:18-PDT From: Andrew Sweer <uw-beaver!SWEER@SUMEX-AIM.ARPA> 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 -------