The Santa Cruz Operation Inc has formally launched fruits of its venture with Corollary Inc – which actually did the crucial work – to develop a version of Unix System V that runs symmetrically over multiple Intel iAPX-86 family processors. Called SCO MPX, it is a multiprocessor extension to the Unix System V/386 3.2 and Santa Cruz is particularly pitching it at Compaq Computer Corp’s Systempro server, which currently comes with one or two 80386s or 80486s in any mix – it says it worked with Compaq to enhance the initial release of SCO MPX so that it immediately takes full advantage of the Systempro. The company is also touting it as a multiprocessor extension to its Open Desktop graphical operating system for 80386 and 80486 personal computers and is adapting it for other AT, EISA and Micro Channel bus machines. It costs $900 for the Systempro, System V/386 3.2 is $900, single-user Open Desktop is $1,000 and the Server Upgrade for Open Desktop is $1,500 in the US.