Sinclair ZX80 / ZX81 / Z88 Forums

Sorry for the late reply i just joined. I seem to remember reading adding two diodes will improve brightness to a composite mod on an zx81.

Hi all i used to write my own code back in the 80s. Just purchased a zx81 my first computer all over again as well as the zx spectrum 48k. I am modding them both with a number of modern features. List: Add volume control for sound - in progress Add on off swich - done Replace regulators on both mach...