A fast and easily customised operating system
for ARM devices
OS_Byte 71
Programmer's Reference Manuals
» Part 15 – SWI Calls
» OS
» OS_Byte
» OS_Byte 71
OS_Byte 71
(SWI &06)
| Entry | |
|---|---|
| R0 | 71 (&47) |
| R1 | Value may be one of the following: |
| 0 – 126 Set alphabet number | |
| 127 Read alphabet number | |
| 128 – 254 Set keyboard number | |
| 255 Read keyboard number |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | 0 if invalid alphabet or keyboard number passed, or |
| country/keyboard number before being overwritten | |
| R2 | Corrupted |
Use
The purpose of this call is to read or write the alphabet or keyboard number used by the international module.
Notes
Although keyboard numbers are passed in with 128 added, they are returned as the actual value.