PA-RISC information - since 1999

PA-RISC Processors

PA-8200 (PCX-U+) processor


The PA-8200 is a 64-bit PA-RISC processor from HP that extended the original 64-bit PA-8000 soon after its release. Several aspects of the PA-8000 were improved with the PA-8200, released in 1997: branch prediction, TLB miss rates and cache sizes.

The PA-8200 should offer improved performace, compatibility with existing applications and short time to market. The availability of new 4 Mb SRAMs with faster access times allowed for increased CPU speed and larger caches. Smaller changes include an increase to the BHT and TLB as high benefit, low risk improvements.


Used in


  1. Four-Way Superscalar PA-RISC Processors (PDF, 190 KB) Anne P. Scott et al (August 1997: Hewlett-Packard Journal)
  2. HP Pumps Up PA-8x00 Family ( mirror) Linley Gwennap (October 1994: Microprocessor Report, Volume 10 Number 14). [Article reprint for]
  3. HP's Latest PA-RISC Microprocessor Evolution Enables 50 Percent Application Performance Boost Hewlett-Packard (October 1996: HP press release). [Article mirror for]

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