Timex/Sinclair 1000

ZX81 Programs

Several programs from club members. Child1: visual aid to teaching pre-school children numbers from 1 to 10 (Bill Harmer). VROP: voltage regulator circuit design program using a 741 op-amp (Bill Harmer). Screen Fill: short machine language program to fill screen with any single character. Stop-Watch: timer based on internal FRAMES variable; max of 18.2 minutes.

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Note Well

John Mathewson has developed cartridge-based interface card and a twister board, either of which are used for connecting an improved keyboard. The twister board can be used with the ZX81/TS 1000. Bill Harmer has been developing a number of programs, including a TV pattern generator and a formula calculation engine. David Hinson developed a program

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