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The PDP-11/44, introduced in 1980, was the last of the Digital Equipment Corporation PDP-11 series of minicomputers implemented in discrete logic. The 11/44 processor consists of five boards, options were floating point (FP-11, one board) and commercial instruction set (CIS, two boards). The cache is marked as optional, but apparently the cacheboard was always shipped with the CPU. The FP-11 board is built using sixteen AMD Am2901 bit slice processors.


The PDP-11/44 was the first low(er)-cost replacement for the PDP-11/70: it had a Unibus and not a Massbus but featured the same 22 bit addressing modes and supported Separated I&D.

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