The dominance of Sun Microsystems Inc machines in the workstation arena seems to be blowing uncommitted manufacturers looking to add a high-end Unix capability quickly into the MIPS Computer Systems Inc camp. Where DEC builds its own machines around the R-series RISCs, the likes of Control Data Corp, Bull SA and Prime Computer Inc all buy machines OEM from MIPS, and they have now been joined by Wang Laboratories Inc. Wang says that many of its existing customers are now demanding Unix, so it is taking the full MIPS line to come in above its own Intel iAPX-86-based Dynamix models.Wang says it will convert its PACE database management system, its document management software and other key VS programs to run under Unix, but says it plans to continue to introduce new models in the VS family.