h6. [[OS SWI Calls]] h6(. » [[OS_Byte]] h6((. » OS_Byte 178 h2. OS_Byte 178 h5. (SWI &06) |_<^{width:3em}. Entry | | |<^. R0|<^. 178 (&B2) | |<^. R1|<^. EOR value | |<^. R2|<^. AND value | |_<^{width:3em}. Exit|_<^. | |<^. R0|<^. Preserved | |<^. R1|<^. Value before being overwritten | |<^. R2|<^. Corrupted | h4. Use The purpose of this call is to read or write the keyboard semaphore. h4. Notes This call is now deprecated, and should not be used. h4. See also * [[OS_Byte]]