h6. [[CDFS]] h6(. » [[CDFS SWI Calls|SWI Calls]] h6((. » CDFS_DescribeDisc h2. CDFS_DescribeDisc h5. (SWI &41E86) |_<^{width:4em}. Entry || |<^. R0 |<^. Drive number (0 = 1st CD drive)| |<^. R1 |<^. Word aligned 64 byte block| |_<^{width:4em}. Exit || |<^. R0 |<^. Preserved| |<^. R1 |<^. Preserved| Block pointed to by R1 updated: |_<^{width:4em}. Offset|Value| |+0|Disc type| |+1|Disc mode| |+2|Reserved| |+3|LBA of Volume Description| |+4|Size of disc | |+8|LBA of Root Directory| |+12|Size of Root Directory| |+16|Block Size| |+20|Disc name (0 terminated)| |+56..64|Reserved| h4. Use This call returns information about the disc in the specified CD-ROM drive. h4. See also * [[CDFS Technical Details]]