Hewlett-Packard Co, which allowed Jim Treybig to take his project away all those years ago and build it into Tandem Computers Inc, is finally ready to enter the fault-tolerant systems business. According to Electronic News, the company is working on a fault-tolerant machine build around its Precision Architecture RISCs. Netx year, it is also expected to come out with multiprocessor Precision Architecture machines next year, offering systems with up to four processors and delivering up to 100 MIPS. No word on whether they will run MPE/V, Unix or both. On the semiconductor front, the Palo Alto company is looking at BiCMOS, ECL and GaAs implementations of its basic RISC CPU technology.