#13 50hz/60hz

[Anonymous]

In the beta I am currently running there is support for both the TC2068
at 50hz and the TS2068 at 60hz. It would be useful to have a 50hz and
a 60hz version of the Spectrum SE (given that some people may just
possibly get around to converting some TS2068s). Whether this means
having two machines Spectrum SE (PAL)/Spectrum SE (NTSC) or a
separate option somewhere to switch the frequency would depend on
which is easier to do I suppose. There is evidence that Sinclair sold a
60hz Spectrum in the US by mail-order before the Timex machines
were launched so I'd prefer a 50hz/60hz switch that could be applied
to all models. But I'll take what I can get. Keep up the good work.

-Andrew

[Fredrick Meunier]

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As we tie timing information closely to the machine definition it would be a big timing guess to have a 50Hz/60Hz switch for any machine. It's easier to have a 50Hz/60Hz SE but there would be more patchwork involved (does a 60Hz SE have a Kempston joystick? It can take fewer peripherals due to the different edge connector, presumably the dock would no longer work etc. etc.)

[Philip Kendall]

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Without any sign of an actual 60Hz Spectrum or SE, I see no need to emulate one.

[Fredrick Meunier]

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One of the Zebra people said they have a prototype NTSC 48k, but it's the only one I've heard of.