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Advanced BIOS Functions
CURSOR POSITION
There are two ways to move the cursor to a specified position. The standard escape
sequence uses one of the following two formats.
ESC[PI;PcH
or
ESC[PI;Pcf
default value: 1
These sequences move the cursor to the position specified by the parameters.
PI
=
line number
A parameter value of 0 or
1
moves the active cursor position to the first
line in the display. A parameter value of
n
moves the the active position
to the nth line in the display.
If
n is greaer than 25, the system treats n as
25.
Pc
=
column number
A parameter value of 0 or 1 moves the active cursor position to the first
column in the display. A parameter value of n moves the active
position to the nth column. If
n
is greater than SO, the system treats
n
as
SO.
As an alternative to the standard escape sequence for cursor position, the following
cursor position escape sequence can be used in programs where the ADM-3A Mode
is more appropriate.
ESC
=
Ic
This sequence moves the cursor position to the position specified by the parameters.
I
=
line number
The line number is a binary value in the range 20H (first line) - 3SH
(25th line).
If I
>
3SH, the system treats I as 3SH.
If 1<
20H, the system treats I as 20H.
c
=
column number
The column number is a binary value in the range 20H (first column)-
6FH (SOth column)
If
c
>
6FH, the system treats c as 6FH.
If c
<
20H, the system treats cas 20H.
Note that the line and the column numbers are hex offsets rather than the actual line
and column numbers used in the standard cursor position escape sequence.
6-5
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