h6. [[OS SWI Calls]] h6(. » [[OS_Byte]] h6((. » OS_Byte 198 h2. OS_Byte 198 h5. (SWI &06) |_<^{width:4em}. Entry | | |<^. R0|<^. 198 (&C6) | |<^. R1|<^. EOR value | |<^. R2|<^. AND value | |_<^{width:4em}. Exit|_<^. | |<^. R0|<^. Preserved | |<^. R1|<^. Previous file handle | |<^. R2|<^. Corrupted | h4. Use The purpose of this call is to read or write the [[*Exec|*Exec]] file handle. h4. Notes This call reads or sets the [[*Exec|*Exec]] file handle. A handle of 0 means that Exec is disabled. A non-zero handle means that Exec is enabled, and hence is the current input stream. h4. See also * [[*Exec|*Exec]] * [[OS_Byte]]