The first DEC system I worked with was a pdp-11/40. It had a CR11, an LP11, one RK05, an
RX01 and a DECtape I unit. It did have MMU but just 32 kB core, which was expanded to 64
KB core. That allowed KED to run with RT-11 (V3, V4).
I did experiment with RSX-11D but preferred RT-11. The pdp served in a laboratory, it got
an LPS-11 interface later on.
Hans
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