Disk image notes FDC === Double-sided disks always interleaved single sided disks noninterleaved fdc bbc80 fd0 read BeebEm ====== If .dsd, assumes is interleaved Understands dsd images, but only up to track 79. Theoretically, source should be ediatble to extend past track 79, as there is a #define maxtracks stament in it. If .ssd, assumes is noninterleaved Understands ssd images, but only to track 79. Doesn't follow past track 79 to track 0 on other side. Assumes .ad* images are ADFS, and prevents 8721 from accessing them. If 1770 access them in FM mode, always gives error &18 (sector not found) .IMG used as though .SSD OmniDisk ======== Cane create interleaved and noninterleaved disks with approproate ORDER command: ORDER HCS or ORDER CHS BBCExplorer =========== Looks at DFS catalogue BeebDOS ======= Difficult to determine 65Em ==== Supposed to use ImageDFS ImageDFS ======== Understands noninterleaved double-sided disks. Does not understand interleaved dsds BeebIt ====== Examines file - if a DFS catalogue at &A00, interleaved, else non-interleaved. Non-interleaved only accessed up to track 79. Does not extend past.