Carol F. Milazzo

Articles

• A Z80 machine language program to use the ZX81 as an audio frequency counter
• Audio Frequency Counter Program for the Timex/Sinclair ZX81
• Butterworth Filter Design
• PET ASCII Output Program for the Timex/Sinclair ZX81
• Phased Vertical Antennas

Documents

• Pet ASCII Output Program
• Translations (2040 printout)