IBM XT 5160 Technical Reference page 133

The following table lists keys that have meaning only in Num
Lock, Shift, or Ctrl states. The Shift key temporarily reverses the
current Num Lock state.
Num
Key Lock Base Case Alt Ctrl
91
7
Home
(
~"
) -1
Clear Screen
92
4
+-
(
~"
) -1
Rever s e Wo r d (
~"
)
93
1 End (
~"
)
-1 Erase to
EOL(~")
96
8 t (
~"
) -1
(
~"
)
97 5
(
~I(
)
-1 (
~"
)
98
2
~
(
~"
) -1 (
~"
)
99
0
Ins
-1 (
~"
)
101
9
Page Up
(
~"
) -1
Top of Text
and Home
102 6
-+
(
~"
) -1
Advance Word
(
~"
)
103
3
Pa~e Down
-1
Erase to EOS
(
~,
)
(
~"
)
104 Delete
(~"
,
~b") (~b"
)
(~b"
)
Notes:
(
~"
) Refer to "Extended Functions
II
in this section.
(~"* )
Refer to "Special Handling
II
in this section.
Special Character Codes
Extended Functions
For certain functions that cannot be represented by a standard
ASCII code, an extended code is used. A character code of 000
(null) is returned in AL. This indicates that the system or
application program should examine a second code, which 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.
4-38 lOl/102-Key Keyboard