XC=BASIC is a dialect of the BASIC programming language for the Commodore-64 and xcbasic64 is a cross-compiler that compiles XC=BASIC source code to 6502 machine code.

Some of the advantages of programming in XC=BASIC are:

• Cross development - use your favourite OS/editor/etc.
• Higher execution speed - no interpreter, the source is compiled to pure machine code.
• More available RAM - the program does not require the BASIC ROM to be present, which means the program code may span from $0801 to $CFFF - a total of 50K!

• complex expressions are allowed
• global and local variables
• integer and floating point types, type casting
• constants
• procedures
• user defined functions
• recursive procedure calls
• inclusion of other source or binary files
• C-like strings
• inline assembly support
• automatic code optimizer

The term “XC=BASIC” stands for “Cross Compiled BASIC”.

This site contains the documentation for XC=BASIC V2.x. Click here if you're looking for the v1.x documentation.