According to this it starts out in HSA Millicode in an IBM zSeries processor http://findarticles.com/p/articles/mi_qa3751/is_200405/ai_n9388162/
-----Original Message----- Shmuel Metz (Seymour J.) In <476996cbbe9af14285e09e63c370072a148d030...@phxccrprd01.adprod.bmc.com>, on 08/17/2010 at 09:02 AM, "Blaicher, Chris" <chris_blaic...@bmc.com> said: >I don't know if today's milli-code is faster than micro-coded or just a >different name for the same thing. The term microcoded is normally used when the simulated architecture is different from the underlying architecture, e.g., 108-bit wide control words simulating the 370 instruction set on 1 3168. -- Shmuel (Seymour J.) Metz, SysProg and JOAT ISO position; see <http://patriot.net/~shmuel/resume/brief.html> We don't care. We don't have to care, we're Congress. (S877: The Shut up and Eat Your spam act of 2003) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html