h6. [[Portable]] h6(. » [[Portable SWI Calls|SWI Calls]] h6((. » Portable_Control h2. Portable_Control h5. (SWI &42FC1) |_<^{width:4em}. Entry | | |<^. R0 |<^. EOR [[Portable_Control Mask|mask]]| |<^. R1 |<^. AND [[Portable_Control Mask|mask]]| |_<^{width:4em}. Exit | | |<^. R0 |<^. Old control value | |<^. R1 |<^. New control value | h4. Use The purpose of this call is to control the power settings and features. h4. Notes <code>New value = (old value AND R1) EOR R0</code> h4. See also * [[Portable_Control Mask]]