6530 Programmer's Guide

Conversational Mode Operation
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6530 Programmer’s Guide
Line Feed (LF)
The LF control character (0AH) moves the cursor down one row, while
maintaining the same column position. If the cursor is initially in the last
row, a roll up operation occurs. If the row contains the last line of display
memory, a scroll operation occurs.
Cursor Right (Esc C)
The Esc C sequence moves the cursor one column position to the right. If
the cursor is initially in the last column, the cursor moves to the first
column of the next row. If the cursor is initially in the last column of the
last row, a roll up operation occurs. If the row contains the last line of
display memory, a scroll operation occurs.
Backspace (BS)
The BS control character (08H) moves the cursor one column position to
the left. If the cursor is initially in column 1, the cursor moves to the last
column of the previous row. If the cursor is initially in row 1, column 1,
a roll down operation also occurs unless the row already contains the first
line of display memory. The backspace is nondestructive.
Carriage Return (CR)
The CR control character (0DH) moves the cursor to column 1 of the
current row.
Cursor Home (Esc H)
The Esc H sequence displays the first 24 lines of display memory on the
screen and positions the cursor in row 1, column 1.
Cursor Home Down (Esc F)
The Esc F sequence displays the last 24 lines of display memory on the
screen and positions the cursor in column 1 of the last row.
Horizontal Tab (HT)
The HT control character (09H) moves the cursor forward (right) to the
next horizontal tab stop. (Tab stops are set or cleared by the next group
of escape sequences.) If the cursor is initially positioned past the row’s
last tab stop, the cursor moves to column 1 of the next row. If this is the
last row on the screen, a roll up operation occurs. If the row contains the
last line of display memory, a scroll operation occurs.