No RISC No Fun
OpenPA is a resource for HP PA-RISC and IA64 computers with in-depth technical descriptions and background information. This site is independent of and does not represent The Hewlett Packard Company in any way.
Hardware details of the PA-RISC platform are in the hardware section; the computers section describes individual PA-RISC and IA64 computer systems, which can also be directly accessed via Shortcuts (i.e., http://www.openpa.net/model). PA-RISC operating systems are detailed in the software section.
Chipset section extended (Stretch, zx1, others)
Entries on the Stretch chipset have been improved with more details and sections added for the Itanium/PA-RISC zx1 chipset and its various components.
All other chipset sections have been revised, extended and reordered, with an overview table providing a summary of the chipsets and support chips used in PA-RISC computers.
HP 9000/T600, T520, T500 & 890
The T-Class servers are large 32-bit PA-RISC mainframes from the mid-1990s, built with modular system cards that contain processors, memory or I/O devices.
The HP 9000/890 was an early iteration of the architecture, with the later T500/T600 being updated sucessors. After the 64-bit T600 the basic system design of the T-Class was discontinued in favor of the more flexible SuperDome systems.
Previous news entries are on the News page.
Download the OpenPA Print Version, Second Edition (2.3)
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Includes all content from the Summer 2009 online version.
For other releases refer to the Print version page.
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