A Z80 machine language program to use the ZX81 as an audio frequency counter Authors Carol F. Milazzo Publication QZX Pub Details QZX v2 n11 Volume: 2 Issue: 11 Date October 1984 Pages Read the article See all articles from QZX v2 n11 Products Downloadable Media Related Articles Image Gallery Tags QZX Machine language programming TS 1000 Type-in program ZX81 People Carol F. Milazzo (KP4MD)
