h6. [[OS SWI Calls]] h6(. » [[OS_Word]] h6((. » OS_Word 7 h2. OS_Word 7 h5. (SWI &07) |_<^{width:4em}. Entry | | |<^. R0 |<^. 7 | |<^. R1 |<^. 8 byte block:| |>^. +0|<^. Channel| |>^. +2|<^. Amplitude| |>^. +4|<^. Pitch| |>^. +6|<^. Duration| |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved| |<^. R1 |<^. Preserved| h4. Use This call makes a sound, equivalent to the SOUND keyword in BBC BASIC. h4. Notes Internally this reason code calls [[Sound_ControlPacked]] and is only provided for compatibility with the BBC Microcomputer system call. h4. See also * [[OS_Word]]