h6. [[OS SWI Calls]] h6(. » [[OS_Word]] h6((. » [[OS_Word 22]] h6(((. » Type h2. Type |_<^{width:4em}. Bit |_<^. Meaning when set| |<^. 0 |<^. Set screen base used by VDU | |<^. 1 |<^. Set screen base used by hardware | h4. See also * [[OS_Word]] * [[OS_Word 22]]