D. Fritsch

6 Stanton Road, Thelwall Warrington, Cheshire, England


Circuit to invert video signal (white on black); fits inside computer. Switch to select normal or inverted video.
TS 1000


  • Letter from England (Sync v3 n1)
    One of the advantages of living in England, home of Sinclair Research, is that we get to try out some of the “extras” before anyone else. Here are some of the things that may cross the Atlantic from England for the ZX81.



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