Systems Concepts SA-10
From Computer History Wiki
The Systems Concepts SA-10 is a microprogrammed PDP-10 disk controller which interfaced with IBM I/O channel devices. On the PDP-10 side, it attached to the external memory bus (for retrieving channel programs, and data transfers), and the PDP-10 I/O Bus (for control, interrupts to the PDP-10, and for diagnostic functionality).
It was very popular at TENEX sites.
