h6. [[ParallelDeviceDriver]] h6(. » [[ParallelDeviceDriver SWI Calls|SWI Calls]] h6((. » [[Parallel_Op]] h6(((. » Parallel_Op 1 h2. Parallel_Op 1 h5. (SWI &42EC1) |_<^{width:4em}. Entry | | |<^. R0 |<^. 1 (Reason code) | |<^. R1 |<^. Data to write | |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | h4. Use The purpose of this call is to write the data and status registers taken from the printer port. h4. Notes A copy of this data will be returned on the next read via [[Parallel_Op 0]]. h4. See also * [[Parallel_Op]] * [[Parallel_Op 0]] * [[Parallel_Op 2]]