Original early Microsoft XENIX operating system technical documentation.

Includes the silver Microsoft XENIX Operating System book along with a Microsoft “Memory Management Document for Potential XENIX Customers.”

The memory-management document discusses technical considerations for implementing XENIX, including memory mapping, protection, virtual memory, paging and segmentation, with references to early microprocessor architectures including the 8086, Z8000 and 68000.

No copyright date was located on the silver XENIX book, so no specific publication year is being represented.

Original vintage Microsoft technical materials, not reproductions. Shows expected age and storage wear including handling marks, edge/corner wear, discoloration and other wear consistent with long-term storage.

Please review all photos carefully for exact contents and condition.

An unusual early Microsoft UNIX/XENIX technical documentation group with appeal to Microsoft, UNIX and vintage computing collectors.