G. Doettling et al., S 390 PARALLEL ENTERPRISE SERVER GENERATION-3 - A BALANCED SYSTEM ANDCACHE STRUCTURE/, IBM journal of research and development, 41(4-5), 1997, pp. 405-428
Since initiating the information technology industry-wide transition f
rom bipolar to CMOS technology with the first generation of S/390(R) p
rocessors in 1994, IBM reached another major milestone with the introd
uction of the third generation in September 1996, The balanced system
and cache structure and the modularity of the components of Generation
3 support a wide performance range from a uniprocessor to a high-perf
ormance multiprocessing system. Because of this modularity, Generation
4 is also based on this structure.