Keys 71-83 have meaning only in base case, in
NUMLOCK
(or
shifted) states,
or
in
CTRL
state.
It
should be noted that the shift
key temporarily reverses the current
NUMLOCK
state.
KEY
#
NUM
LOCK
BASE
CASE
ALl
ClRL
71
7
Home
(Note
1)
Note
1
Clear
Screen
72
8
of'
(Note
1)
Note
1
-1
73
9
PageUp
(Note
1)
Note
1
Top
of
Text &
Home
74
-
-
-1 -1
75
4
~
(Note
1)
Note
1
Reverse
Word
(Note
1)
76
5
-1
Note
1
-1
77
6
~
(Note
1)
Note
1
Adv
Word
(Note
1)
78
+
+
-1
-1
79
1
End
(Note
1)
Note
1
Erase
to
EO
L
(Note
1)
80
81
2
3
..v
(Note
1)
PageDown
(Note
1)
Note
1
Note
1
-1
Erase
to
EOS
(Note
1)
82
0
INS
Note
1
-1
83
DEL
(Notes
1,2)
Note
2
Note
2
Note
1:
Refer
to
Extended
Codes
Page
(3-13).
Note
2:
Refer
to
Special
Handling
Page
(3-15).
Extended Codes
A.
Extended Functions
For
certain functions that can not be represented in the
standard
ASCII
code, an extended code is used. A character
code
of
000
(NUL)
is returned in AL. This indicates
that
the
system
or
application program should examine a second
code
that
will indicate the actual function. Usually, but not
always, this second code is the scan code
of
the primary key
that was pressed. This code
is
returned in AH.
3-13
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