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66 lines
1.9 KiB
Markdown
66 lines
1.9 KiB
Markdown
Output Formats
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==============
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`sixtypical` can generate an output file in a number of formats.
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### `raw`
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The file contains only the emitted bytes of the compiled SixtyPical
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program.
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The default origin is $0000; you will likely want to override this.
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Note that the origin is not stored in the output file in this format;
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that information must be recorded separately.
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### `prg`
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The first two bytes of the file contain the origin address in
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little-endian format. The remainder of the file is the emitted bytes
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of the compiled SixtyPical program, starting at that origin.
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The default origin is $C000; you will likely want override this.
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This format coincides with Commodore's PRG format for disk files,
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thus its name.
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### `c64-basic-prg`
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The first few bytes of the file contain a short Commodore 2.0 BASIC
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program. Directly after this is the emitted bytes of the compiled
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SixtyPical program. The BASIC program contains a `SYS` to that code.
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The default origin is $0801; it is unlikely that you will want to
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override this.
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This format allows the PRG file to be loaded and run on a Commodore 64
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with
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LOAD"FOO.PRG",8:RUN
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### `vic20-basic-prg`
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Exactly like `--c64-basic-prg` except intended for the Commodore VIC-20.
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The default origin is $1001; it is unlikely that you will want to
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override this.
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This format allows the PRG file to be loaded and run on a VIC-20 with
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LOAD"FOO.PRG",8:RUN
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### `atari2600-cart`
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The file starts with a short machine-language prelude which is intended
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to initialize an Atari 2600 system, followed by the emitted bytes of the
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compiled SixtyPical program.
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The file is padded to 4096 bytes in length. The padding is mostly
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zeroes, except for the final 4 bytes of the file, which consist of
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two addresses in little-endian format; both are the origin address.
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The default origin is $F000; it is unlikely you will want to
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override this.
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This is the format used by Atari 2600 cartridges.
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