Several research and development operating systems have been ported to PA-RISC between the late 1980s and late 1990s, many of them Mach microkernel-based.| www.openpa.net
The HP 9000 V2250 and V2250 are large-scale scalable PA-RISC servers, with up to sixteen 64-bit PA-RISC processors based on a crossbar architecture.| www.openpa.net
The HP 9000 V2500 and V2600 are second generation scalable PA-RISC servers based on the Convex Exemplar architecture with up to 32 64-bit PA-RISC processors in a single cabinet.| www.openpa.net
The Convex Exemplar SPP1000, SPP1200 and SPP1600 are scalable 32-bit mainframe computing systems, with either PA-7100 or PA-7200 processors.| www.openpa.net