=> R0 = 238
R1 = EOR value
R2 = AND value
<= R0 preserved
R1 = previous base number
R2 corrupted
This call reads or sets the numeric keypad interpretation. Keypad keys generate offsets from this base value, which with the default base number of 48 give the key presses shown:
Key Offset Key code Offset with Key Code
Pressed from base Generated NumLock generated
0 ±0 "0" +157 Insert
1 +1 "1" +91 Copy
2 +2 "2" +94 Down
3 +3 "3" +110 Page Down
4 +4 "4" +92 Left
5 +5 "5" (ignored)
6 +6 "6" +93 Right
7 +7 "7" -18 Home
8 +8 "8" +95 Up
9 +9 "9" +111 Page Up
. -2 "." +79 Delete
/ -1 "/" unchanged
* -6 "*" unchanged
# -13 "" unchanged
- -3 "-" unchanged
+ -5 "+" unchanged
Enter -35 Return unchanged
The effects of shift and control are set with OS_Byte 254.
See PRM 1, page 900
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