Reproducing old machines with newer technology (Re: PDP-12 at the RICM)

Sean Caron scaron at
Tue Jul 14 20:21:49 CDT 2015

As well, some early microprocessors used multiple clocks i.e. the TMS9900.



On Tue, Jul 14, 2015 at 8:04 PM, Eric Smith <spacewar at> wrote:

> On Tue, Jul 14, 2015 at 3:28 PM, tony duell <ard at>
> wrote:
> > If you mean 6 different clock sources (i.e. clocks delayed from each
> other, etc) then that
> > is not typical of a 1970s minicomputer in my experience.
> IIRC, the KB11 processors used in the DEC 11/45 and 11/70 (and other
> related systems) used five "clocks delayed from each other" (more
> commonly known as clock phases). In my experience that was more common
> in 1970s computers than a single-phase clock.

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