ASIC is a programming language, a BASIC dialect and shareware compiler for DOS systems. Written by Dave Visti of 80/20 Software, it achieved brief popularity in the 1990s as one of the few BASIC compilers legally available for download from BBSes. However, ASIC understood only a small subset of the BASIC language, with most versions having little or no support for logical operators, control structures, and floating-point arithmetic. These shortcomings are the reason for the software's tongue-in-cheek motto, "ASIC: It's almost BASIC!"