In a message dated 7/18/2008 11:26:58 P.M. Central Daylight Time, [EMAIL PROTECTED] writes:
I really, really don't know where this "they're the same" mythology got started. Take a look at Charles Webb's presentation if you want a partial list of the many differences. Or just look at the photographs! >> _http://en.wikipedia.org/wiki/IBM_z6_ (http://en.wikipedia.org/wiki/IBM_z6) The z10 processor was co-developed with and shares many design traits with the _POWER6_ (http://en.wikipedia.org/wiki/POWER6) processor, such as fabrication technology, logic design, _execution unit_ (http://en.wikipedia.org/wiki/Execution_unit) , floating-point units, bus technology and _pipeline_ (http://en.wikipedia.org/wiki/Instruction_pipeline) design style, i.e., a high frequency, low latency, deep (14 stages in the z10), in-order pipeline. The processors are quite unlike in other respects, such as cache hierarchy and _coherency_ (http://en.wikipedia.org/wiki/Cache_coherency) , _SMP_ (http://en.wikipedia.org/wiki/Symmetric_multiprocessing) topology and protocol, and chip organization. The different _ISAs_ (http://en.wikipedia.org/wiki/Instruction_set) result in very different cores – there are 894 unique z10 instructions, 75% of which are implemented entirely in hardware. The z/Architecture is a rich _CISC_ (http://en.wikipedia.org/wiki/Complex_instruction_set_computer) architecture backwards compatible all the way back to the _IBM System/360_ (http://en.wikipedia.org/wiki/IBM_System/360) architecture from the 1960s. **************Get fantasy football with free live scoring. Sign up for FanHouse Fantasy Football today. (http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
