h6. [[OS SWI Calls]] h6(. » [[OS_ScreenMode]] h6((. » OS_ScreenMode 7 h2. OS_ScreenMode 7 h5. (SWI &65) |_<^{width:4em}. Entry | | |<^. R0 |<^. 7 (RISC OS 6 only) | |_<^{width:4em}. Exit | | |<^. R1 |<^. Number of display banks available | |\2<^. All other registers preserved | h4. Use The purpose of this call is to read the number of display banks available to be selected by [[OS_Byte 112]] and [[OS_Byte 113]]. h4. Notes RISC OS 6 *only* – calls [[VideoV]].