What's the difference between CISC and PA-RISC HP3000 systems (software)
HP3000 systems prior to "Spectrum" are now commonly referred to as the
"Classic" systems, the 9xx series were initially called "Spectrum"
systems (although currently "XL" or more recently "iX" is more
commonly used). MPE/XL continued until the beginning of the integration of POSIX support
into the operating system, which was then abruptly renamed to MPE/iX as of Release 4.0 (?)
although the only supported (push) release with realistic POSIX features will be the
MPE/iX 5.0 release.