HP Vectra Technical Reference Manual page 149

Keyboard Keypad Groups
Softkey Keypad (f1-f8) Numeric or Cursor Keypad
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Function Keypad (F1-F10)
Table 5.1
QWERTY Keypad
Figure 5.2
Cursor Control Keypad
STD-BIOS Keyboard Driver Data Area
Address
00417H
00419H
0041AH
0041CH
0041EH
140 Keyboard
Length
Bytes
2
1
2
2
32
Definition
Keyboard Flags
Alt/Numpad accumulator
Keyboard buffer head pointer
Keyboard buffer tail pointer
Keyboard buffer