Shift States - IBM 5150 Hardware Reference Manual

Table 26.
Keyboard Extended Functions
SECOND CODE
FUNCTION
3
NUL Character
15
16-25
ALTn, W, E, R, T, Y, U, I, 0, P
30-38
ALT A, S, 0, F, G, H, J, K, L
44-50
ALT Z, X, C, V, B, N, M
59-68
Fl-Fl0 Function Keys Base Case
71
Home
72
t
73
Page Up
&
Home Cursor
75
<E­
77
~
79
End
80
-l ­
81
Page Down
&
Home Cursor
82
INS
83 DEL
84-93
Fl1-F20 (Upper Case Fl-Fl0)
94-103
F21-F30 (CTRl F1-Fl0)
104-113 F31-F40 (AlT Fl-Fl0)
114 CTR LPRTSC (Start/Stop Echo to Printer) Key 55
115
CTRL
~
Reverse Word
116
CTRl
- ?
Advance Word
117 CTRl END Erase EOl
118
CTR LPG ON Erase EOS
119
CTRL HOME Clear Screen and home
120-131
ALT 1, 2,3,4,5.6.7,8,9,0, -,
=
(Keys 2-13)
132
CTRl PG UP TOP 25 lines of Text
&
Home Cursor
B. Shift States
Most shift states are handled within the keyboard routine
transparently to the system or application program. In any
case, the current set of active shift states are available by
calling an entry point in the ROM keyboard routine. The
following keys result in altered shift states:
Shift - Temporarily shifts keys 2-13, 15-27, 30-41,43-53,55,
59-68 to upper case (lower case if in CAPSLOCK state).
Temporarily reverses NUMLOCK/NONUMLOCK state of
keys 71-73,75,77, 7 9 - 8 3 . r - - . . . . .
CTRL - Temporarily shifts keys 3, 7, 12, 14, 16-28,30-38,
43-50,55,59-71, 73, 75, 77, 79, 81 to CTRL state. Used with
ALT and DEL to cause "system reset" function described in
Section 1.3. Used with SCROLL LOCK to cause "break"
function described in Section 1.3. Used with NUMLOCK to
cause "pause" function described in Section 1.3.
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