Table of Contents
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Second
Code
Function
151
Alt
Home
152
A1t
Up
153
A1t
Page Up
155
Alt
Left
157
A1t
Right
159
A1t
End
160
A1t
Down
161
A1t
Page Down
162
A1t
Insert
163
A1t
Delete
164
A1t
Keypad /
165
Alt
Tab
166
A1t
Enter
Keyboard Extended Functions (Part 2 of 2)
Shift States
Most shift states are handled within the keyboard routine, and are
not apparent to the system or application program. In any case,
the current status of active shift states is available by calling an
entry point in the BIOS keyboard routine. The following keys
result in altered shift states:
Shift:
This key temporarily shifts keys 1 through 13, 16 through
29,31 through 41, and 46 through 55, to uppercase (base case if
in Caps Lock state). Also, the Shift temporarily reverses the
Num Lock or non-Num Lock state of keys 91 through 93,96,98,
99, and 101 through 104.
Ctrl:
This key temporarily shifts keys 3, 7, 12, 15 through 29, 31
through 39,43, 46 through 52, 75 through 89, 91 through 93, 95
through 108, 112 through 124 and 126 to the Ctrl state. The Ctrl
key is also used with the Alt and Del keys to cause the
system-reset function; with the Scroll Lock key to cause the break
function; and with the Num Lock key to cause the pause function.
The system-reset, break, and pause functions are described under
"Special Handling" later in this section.
4-40
lOl/102-Key Keyboard
- Quick Links:
- Section 1. System Board
- 64/256K System Board
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