using new technology on old machines. Was: PDP-12 Restoration at the RICM

Pontus Pihlgren pontus at Update.UU.SE
Mon Jun 15 01:39:06 CDT 2015

Indeed, you use what is at hand and what you are comfortable with.


On Sun, Jun 14, 2015 at 09:41:42PM +0200, Simon Claessen wrote:
> as long as it is done in a way that it can be restored to its
> original, i have no problems in using newer technology in older
> machines. we have a alix sbc build into our tek 4002a for
> demonstrational purpouses, all done without damaging or altering the
> original machine.
> On 14-06-15 17:25, tony duell wrote:
> >
> >>The ripple on the power supplies is still going lower as we put more run
> >>time on the system. The power supplies are now within spec.
> >
> >Capacitors reforming naturally?
> >
> >>Warren made an Arduino based programmable baud rate generator that works
> >>for both serial ports. After some debugging, it works nicely.
> >
> >I am sorry, but I find that obscene!. To use more components than the rest of the machine
> >(probably) just for the baud rate clock is ridiculous. IMHO if you are going to modify a
> >vintage machine, particularly one as rare as a PDP12, you should use the components
> >that were available at the time. It's not as if a programmable buad rate generator is hard
> >to make from TTL either. In fact given the Arduino thing needed 'some debugging' it might
> >well have taken less time to do it in hardware.
> >
> >-tony
> >
> -- 
> Met vriendelijke Groet,
> Simon Claessen

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