The Santa Cruz Operation Inc and Sytek Inc have a technology exchange agreement that provides support for the SCO Xenix-NET MS-DOS-Xenix local network operating system software on Sytek 6110 and 6120 Network Adaptor Cards for broadband PC Networks. The agreement was made as a result of IBM’s decision to replace the original IBM PC Network Adaptor Card with the new PC Network Adaptor Card II, which removed NETBIOS from the adaptor and integrated it with the CPU, creating an incompatibility between SCO Xenix-NET and the IBM PC Network. Under the agreement, Santa Cruz has written drivers that support SCO Xenix-NET on Sytek’s 6110 and 6120 cards. Since the Sytek cards are fully compatible with PC Network, and since they continue to offer the NETBIOS interface at the card level, users are claimed to get access to a steady source of network adaptor cards that will support their existing operating environment. Xenix-NET is a packaged version of Microsoft Networks software for Xenix systems and uses the MS NET Server Message Block protocols on top of a NETBIOS interface for compatibility with all MS-DOS applications.