gcbasic_with_the_avrisp_or_mkii_programmer - GreatCowBASIC/Help GitHub Wiki GCBASIC with the AVRISP or MKII Programmer This is the GCBASIC section of the Help file that explains how to use an AVRISP MKII or USBtinyISP for ATTINY10 chip under Windows 10 ⚠️ **GitHub.com Fallback** ⚠️