MAI Basic Four Inc, Tustin, California minnow cheekily bidding for Prime Computer Inc, has introduced a small-range MAI 2500 multi-user microcomputer to replace the 68010-based 2000 which is being phased out of production. The 2500 is effectively a downgraded 3000, which uses the 68020 microprocessor, and like the rest of the range runs under the MBF Unix-derived BOSSIX operating system. It is being offered to small and medium sized companies who in time may want to upgrade to larger MBF systems. BOSS retains a Unix command structure but has been designed specifically for business use. The 2500 supports up to 14 concurrent system users or serial devices, as well as Origin, MAI’s own applications generation database, and Informix. It provides up to 4Mb of memory and 160Mb of disk storage and communications options available include MAI’s Magnet LAN and WAN systems. A basic MAI 2500 system configuration costs around UKP15,000.