A virtual memory system for the Hewlett Packard 2100A

The Hewlett-Packard 2100 series is a well-established family of 16-bit minicomputers of conventional Von Neumann architecture. Although as the series has developed, the hardware design has been changed from hard-wired to microprogrammed implementation, and new instructions and other features have been added, all members of the series share the same basic instruction set, addressing modes and data formats.