ppmtospu

Convert a PPM file to an Atari Spectrum 512 image. More information: https://netpbm.sourceforge.net/doc/ppmtospu.html.

• Convert a PPM file to an Atari Spectrum 512 image:

ppmtospu {{path/to/input.ppm}} > {{path/to/output.spu}}

• Use a dithering matrix of the specified size (0 means no dithering):

ppmtospu -d{{0|2|4}} {{path/to/input.ppm}} > {{path/to/output.spu}}