Thread: Zx81
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Old 22nd Apr 2020, 1:22 pm   #275
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,485
Default Re: Zx81

Unless you have a specific reason not to, I would try putting switches 3 and 4 to OFF and leaving them there, since your '81 does not have anything unusually exotic in the way of memory arrangements. (The external RAM pack does not count as 'unusual'.).
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