And in a timely move, IN2 chose the turn of the year to make its promised entree into the Unix market with launch of two new families, the IN4000 and IN6000 series. The fault-tolerant 6000 is based on RISC chips from MIPS Computer Systems Inc, Sunnyvale, California, and includes two models: the 6200 uses the R2000, rated at 12 MIPS – with cache it caters for up to 60 users and costs $93,000; and the larger 6600 is rated at 20 MIPS and uses the R3000 chip – it has 32Mb of memory, plus cache, supports up to 200 users and costs $370,000. The current IN-Unix will be replaced by Siemens’ Sinix, and Pick will be added in future. The IN 4000 series is based on a 33MHz Motorola 68030 with 8Mb mem ory. The 4200 supports a maximum of 32 users for $34,000, the 4400 twice as many for UKP50,000. IN2’s estab lished line of 80386-based MS-DOS machines – the 386C and 386Ti – man ufactured by its Leanord SA personal computer affiliate, and the Pick-based IN8000 series will also be fitted with Sinix this quarter. As yet the 4000 and 6000 series are not available in the UK, the 386C and 386Ti arrives in the UK next month.