What are the various revisions of PA-RISC?
PA-RISC 1.1 is an extension to the PA-RISC 1.0 architecture, and is fully backwards-compatible (i.e., all PA-RISC 1.0 programs will execute without change on PA-RISC 1.1 machines). The biggest difference is that PA-RISC 1.1 added 16 more floating-point registers, the ability to address each double-precision floating-point register as two single-precision registers, and a few new floating-point operations, so the floating-point performance is greatly improved. There were a few changes on the integer side, but nothing major. The first machines to be shipped with PA-RISC 1.1 CPUs were the first Series 700 machines (the “Snakes” series). Shortly after that, however, the “Nova” series of Series 800 (8×7) machines was introduced using the same PA-RISC 1.1 CPU. Since then, every new PA-RISC machine that HP has produced is based on the PA-RISC 1.1 architecture. Thus, all Series 700 machines are PA-RISC 1.1, and the newer Series 800 machines are PA-RISC 1.1. If you compile a program on a Series
Updated: 01/23/03 Rev Bits Rel Models ================================================== ======================== 1.0 32-bit ’86 TS1, NS, NS1, CS1, NS2, PCx 1.1 32-bit ’89 PA7000 (PCx-S), PA7100 (PCx-T), PA7150 (PCx-T+), PA7100LC (PCx-L), PA7200 (PCx-T’), PA7300LC (PCx-L2) 2.0 64-bit ’94 PA8000 (PCx-U), PA8200 (PCx-U+), PA8500 (PCx-W), PA8600 (PCx-W+),PA8700 (PCx-W2), PA8800, PA8900 o The PA8700 is scheduled for release in the first half of 2001. o The PA8800 is slated for release in the first half of 2002. o The PA8900 is slated for release in the first half of 2003, and will probably be the final processor in the PA-RISC family. o HP-UX 10.10 is the last supported release for all PA-RISC 1.0 systems. o HP-UX 10.20 is the first supported release for PA-RISC 2.0 systems. o HP-UX 11.00 is the first release to utilize the 64-bit capacity of PA-RISC 2.0. PA-RISC architecture evolution ============================== When the original PA-RISC 1.0 Architecture was designed in the early eight
