PC-BASIC is a free, cross-platform interpreter for GW-BASIC, Advanced BASIC (BASICA), PCjr Cartridge Basic and Tandy 1000 GWBASIC. It interprets these BASIC dialects with a high degree of accuracy, aiming for bug-for-bug compatibility. PC-BASIC emulates the most common video and audio hardware on which these BASICs used to run. PC-BASIC runs