Showing changes from revision #1 to #2:
Added | Removed | Changed
Entry | |
---|---|
R0 | 3 |
R1 | Character to be sent |
Exit | |
---|---|
R0 | Preserved |
R1 | Preserved |
C flag clear if character was sent, or set if character was not sent (ie the buffer was full) |
The purpose of this call is to send a byte into the serial output buffer.
This call puts a character in the serial output buffer, and re-enables the transmit interrupt if it had been disabled by RISC OS. If the serial output buffer is full, the call returns immediately with the C flag set.