Questions tagged [pdp-6]
For questions regarding the DEC PDP-6 computer.
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Was 36-bits needed for LISP?
Came across a curious claim today about the PDP-6:
First, 36 bits was the standard for scientific computing. This
extended word length also accommodated LISP, a new language developed
for work in ...
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6
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3
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Why does PDP-6 Fortran need JSA and JRA?
According to pdp10.nocrew.org, the JSA and JRA instructions were invented for PDP-6 Fortran. It's a strange claim; now I don't know anything about Fortran, but I find it hard to convince myself that ...
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When was DEFUN added to Lisp?
I don't see DEFUN in a ~1966 copy of PDP-6 LISP. I do see it in a 1972 Maclisp.
AI memo 116A from 1967 doesn't have DEFUN. (It does have MACRO.)
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What are the differences between the various 36-bit computers from DEC?
I want to ask about the
PDP-6
PDP-10
various implementations KA-10, KI-10, KL-10
DECSYSTEM-20
What are the differences between these? I'm not that interested in architectural differences, cache ...
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10
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3
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Is there a non-paging ITS for the PDP-6 or PDP-10?
In the late 60s, the Incompatible Timesharing System ran on a PDP-6 without any paging hardware (i.e. an MMU in modern terminology). See the Jargon entry for BLT, for example, which states (my ...
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Where can I find software for the PDP-6?
We are planning to build a reconstruction of the PDP-6. The project is making a lot of progress, but currently we have a critical lack of software. Does anybody know where we can find software to run ...
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