Apc Escape Code Sequences - NEC CP/M-86 System Reference Manual

Advanced BIOS Functions
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6-4
APC Escape Code Sequences
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CURSOR UP
ESC[PnA default value: 1
This sequence moves the active position up without altering the column position.
The number of lines moved is determined by the parameter. A parameter value of 0
or 1 moves the active position up one line. A parameter value of n moves the active
position up n lines. If an attempt is made to move the cursor above the first
character of the first display line, the cursor stops at the top margin.
CURSOR DOWN
ESC[PnB default value: 1
This sequence moves the active position down without altering the column position.
The number oflines moved is determined by the parameter. A parameter value of 0
or 1 moves the active position down one line. A parameter value of n moves the
active position down n lines. If an attempt is made to move the cursor below the
bottom margin, the screen rolls up the required number of lines.
CURSOR FORWARD
ESC[PnC default value: 1
This sequence moves the active position to the right. The distance moved is
determined by the parameter. A parameter value of 0 or 1 moves the active position
one position to the right. A parameter value of
n
moves the active position
n
positions to the right. If an attempt is made to move the cursor to the right of the
right margin, the cursor moves to the first column of the next line. If this would take
the cursor below the bottom margin, the screen rolls up one line and the cursor is
positioned on the first character of the bottom line.
CURSOR BACKWARD
ESC[PnD default value: 1
This sequence moves the active position to the left. The distance moved is deter-
mined by the parameter. A parameter value of 0 or 1 moves the active position one
position to the left. A parameter value of n moves the active position n positions to
the left. If an attempt is made to move the cursor to the left of the left margin, the
cursor moves to the last column in the previous row. If this would place the cursor
above the home position, the cursor does not move.
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