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Cuts out blocks from a TZX file into a new TZX file.

This tool is useful to split the copy of a mixed tape into a separate TZX file for one of the programs.

See also tzxsplit.

This tool also accepts a TAP file. It is converted to TZX format internally.


tzxcut [-h] [-i SOURCE] [-o TARGET] [-v] [blocks [blocks ...]]
  • blocks: Block number, or range of block numbers, to keep in the output file. Use tzxls to find out the block numbers of a TZX file.
  • -i, --from: TZX file to read from, or stdin if not given.
  • -o, --to: Target file. If omitted, stdout is used.
  • -v, --invert: Invert block matches. The given block numbers are not kept, but removed.
  • -h, --help: Show help message and exit.

Blocks can be addressed in a single number or in a range:

  • 13 - Keep block number 13.
  • 4:8 - Keep block numbers 4 to 8 (inclusive).
  • 3: - Keep block numbers 3 and higher.
  • :4 - Keep the first blocks up to block 4 (inclusive).

Remember that blocks are counted starting from zero.

Negative block numbers are counted backwards from the last block:

  • -1 - Keep only the last block.
  • 4:-2 - Keep block numbers from 4 up to the second to last block.
  • -4: - Keep the last four blocks.
  • :-3 - Keep all the blocks up the third to last block.

If you use negative block numbers, it is wise to place a -- at the command line before the block ranges, so negative block numbers are not interpreted as options (see example below).


tzxcut -i games.tzx -o first-game.tzx 0:5 7

Copies the blocks 0 to 5 (inclusive) and block 7 of games.tzx into a new file first-game.tzx.

tzxcut -i games.tzx -o first-game.tzx -- -5 -3:

Copies the fifth to last and the three last blocks of games.tzx into a new file first-game.tzx.