Control Data Corp has adopted Lynx Real-Time Systems Inc’s real-time Unix kernel to do a Posix 1003.1- compliant Unix implementation for its MIPS Computer Systems Inc RISC-based 4000 series, the 4360 and 4680. Aimed at simulation, data acquisition, telemetry and military work, it answers a single interrupt in under 19 microseconds and costs UKP5,776 on the 4360, UKP9,625 on 4680.