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INT
51
h,
Function 2
-
Set
Cursor
Position
Entry:
AH =
2
(function
code)
DH
=
cursor
column
DL =
cursor
row
Exit:
No
registers specified
INT
51
h,
Function 3
-
Report Cursor
Position
Entry:
AH
=
3
(function
code)
Exit:
DH =
cursor
column
DL =
cursor
row
INT
51
h,
Function 4
-
Cursor on
Entry:
AH =
4
(function
code)
Exit:
No
registers specified
INT
51
h,
Function 5
-
Cursor
off
Entry:
AH =
5
(function
code)
Exit:
No
registers specified
INT
51
h,
Function 6
-
Enable
Line
Wrap
Entry:
AH
=
6
(function
code)
Exit:
No
registers specified
INT
51
h,
Function
7
-
Disable Line
Wrap
Entry:
AH
=
7
(function
code)
Exit:
No
registers specified
With
line
wrap
enabled,
displaying a character
in
the rightmost
column
of
the display
causes
the cursor
to
advance
to
the leftmost
column
of
the next
line
of
the
display.
When
this
occurs
on
the
bottom
line,
the display
is
scrolled
up one
line
and
the cursor
is
positioned
to
the
leftmost
column
of
the
new
blank
line
on
the
bottom
of the
screen.
With
line
wrap
disabled,
the cursor
is
not
advanced
after
displaying
a
character
in
the
rightmost
column
of
the
display.
Consequently, a
scroll
is
not automatically
performed
after
displaying
a
character
in
the rightmost
column
of
the
bottom
line
of
the
display.
The BIOS
intialization
sequence
should enable
line
wrap.
139
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