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This might warrant a "(1974)" in the title. It's about the processor for the legendary LISP machine from the MIT's AI Lab. The overview: The CONS microprocesso
by unwind 5y ago
This might warrant a "(1974)" in the title. It's about the processor for the legendary LISP machine from the MIT's AI Lab. The overview:
The CONS microprocessor is a general purpose processor designed for easy programming of list manipulation and emulation of complex order codes. It is the central processor in the lisp machine project, where it emulates the 16 bit order code produced by the lisp compiler. It is organized around three 32 bit data paths: an A source, an M source, and an output bus. Source specifications and functions applied to the data are entirely under control of a 42 bit microcode word.
It's cool that a new CPU can be presented in a 23-page document, but I did not read it all to see how detailed it really gets.
- rjsw 5y agoIt is the precursor to the MIT Lisp Machine, the design that was used within MIT and commercialized by LMI, TI and initially by Symbolics was the CADR [1]. [1] http://www.unlambda.com/cadr/memo528.html http://www.unlambda.com/cadr/memo528.html
- lispm 5y agoSymbolics sold an only minor improved CADR as their "LM-2" in small quantities. The CADR wasn't really something one would sell to customers, since it was difficult to produce and maintain. The next generation then started with the 3600, which was a larger improvement (including its 36bit architecture).