OS_Byte 238 (changes)
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Programmer's OS Reference SWI Manuals Calls
» Part OS_Byte 15 – SWI Calls
» OS_Byte 238OS
» OS_Byte
» OS_Byte 238
OS_Byte 238
(SWI &06)
| Entry | |
|---|---|
| R0 | 238 (&EE) |
| R1 | EOR value |
| R2 | AND value |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Previous base number |
| R2 | Corrupted |
Use
The purpose of this call is to read or set the numeric keypad interpretation.
Notes
Keypad keys generate offsets from this base value, which with the default base number of 48 give the key presses shown:
| Key Pressed | Offset from Base | Key code Generated | Offset with Num Lock | Key Code Generated |
|---|---|---|---|---|
| 0 | +0 | 0 | +157 | Insert |
| 1 | +1 | 1 | +91 | End/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 |
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