OS_Byte 230 (changes)
Showing changes from revision #2 to #3:
Added | Removed | Changed
OS SWI Calls
» OS_Byte
» OS_Byte 230
OS_Byte 230
(SWI &06)
| Entry | |
|---|---|
| R0 | 230 (&E6) |
| R1 | EOR value |
| R2 | AND value |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | State before being overwritten |
| R2 | Corrupted |
Use
The purpose of this call is to enable or disable the generation of escape conditions, and to read the current setting.
Notes
This call reads or sets the escape effects. A non-zero state disables escape effects. A state of 0 (the default) enables escape effects – when escape is acknowledged (see OS_Byte 126).
- Active output buffers are flushed – see OS_Byte 21
- Current *Exec file closed – see OS_Byte 198
- VDU queue cleared – see OS_Byte 218
- VDU paged line count cleared – see OS_Byte 217
- Terminates any sound being produced
See also
Social
Follow us on
and
and
ROOL Store
Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.