Complex sentence: With special software it's possible to read C1581 disks on a x86 PC system, and likewise, read MS-DOS disks in the C1581 (Big blue reader) provided the PC floppy handles the "720 kB" size format.
Split into simpler sentences: With special software it's possible to read C1581 disks on a x86 PC system. And read MS-DOS disks in the C1581 (Big blue reader) provided the PC floppy handles the "720 kB" size format.