A detailed walkthrough of simulating Unix v7 on a PDP-11/45 using OpenSIMH, explaining the historical context and technical details often glossed over in other tutorials. Covers PDP-11 architecture fundamentals including the UNIBUS, disk controllers (RH11), storage devices (RP06 removable-pack drives), tape drives (TU10), and the filesystem setup process. Explains device files, partitions, disk drivers, and the distinction between buffered and raw device access in Unix v7. Provides in-depth explanations of configuration parameters, bootstrap procedures, and the reasoning behind using multiple disks for root and user filesystems.
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