ASIC is a compiler and integrated development environment for a subset of the BASIC programming language. It was released for MS-DOS and compatible systems as shareware. Written by Dave Visti of 80/20 Software, it was one of the few BASIC compilers legally available for download from BBSes. ASIC allows compiling to an EXE or COM file. A COM file for the Hello world program is 360 bytes.

ASIC has little or no support for logical operators, control structures, and floating-point arithmetic. These shortcomings resulted in the tongue-in-cheek motto, "ASIC: It's almost BASIC!"

ASIC is strongly impoverished in comparison with its contemporary BASICs. The features of ASIC are selected to make a program be easily and directly compiled into machine language. Thus, many language constructs of ASIC are equivalent to constructs of assembly language.

Neither identifiers nor keywords are case-sensitive.

Any DIM statements, if specified, must precede all other statements except REM statements or blank lines.

All DATA statements must be placed at the beginning of the program, before all other statement types, except DIM, REM statements, or blank lines.

ASIC does not have the exponentiation operator ^.

ASIC does not have boolean operators (AND, OR, NOT etc.).