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Output Formats

sixtypical can generate an output file in a number of formats.

raw

The file contains only the emitted bytes of the compiled SixtyPical program.

The default origin is $0000; you will likely want to override this.

Note that the origin is not stored in the output file in this format; that information must be recorded separately.

prg

The first two bytes of the file contain the origin address in little-endian format. The remainder of the file is the emitted bytes of the compiled SixtyPical program, starting at that origin.

The default origin is $C000; you will likely want override this.

This format coincides with Commodore's PRG format for disk files, thus its name.

c64-basic-prg

The first few bytes of the file contain a short Commodore 2.0 BASIC program. Directly after this is the emitted bytes of the compiled SixtyPical program. The BASIC program contains a SYS to that code.

The default origin is $0801; it is unlikely that you will want to override this.

This format allows the PRG file to be loaded and run on a Commodore 64 with

LOAD"FOO.PRG",8:RUN

vic20-basic-prg

Exactly like --c64-basic-prg except intended for the Commodore VIC-20.

The default origin is $1001; it is unlikely that you will want to override this.

This format allows the PRG file to be loaded and run on a VIC-20 with

LOAD"FOO.PRG",8:RUN

atari2600-cart

The file starts with a short machine-language prelude which is intended to initialize an Atari 2600 system, followed by the emitted bytes of the compiled SixtyPical program.

The file is padded to 4096 bytes in length. The padding is mostly zeroes, except for the final 4 bytes of the file, which consist of two addresses in little-endian format; both are the origin address.

The default origin is $F000; it is unlikely you will want to override this.

This is the format used by Atari 2600 cartridges.