TMSColor

TMSColor: Converter from BMP to TMS9928 format
3.0 Apr/27/2025  by Óscar Toledo G. http://nanochess.org

Usage:

    tmscolor [options] image.bmp image.asm [label]
        Creates image for use with assembler code

    -sms   Sega Master System mode.
    -b     Generates CVBasic source code.
    -n     Removes CVBasic stub code for displaying.
    -z     Output file is compressed with Pletter.
    -s     Process tiles in chunks of 16 pixels high (sprites).
    -sb    Same as above but generates BITMAP statements.
    -t     Generates minimum of tiles required.
    -t1    Same but starting at tile 1 (0-255).
    -e45d2 Replaces color 4 with 5 and d with 2 before processing.
    -fx    Flip image along the X-coordinate (mirror)
    -fy    Flip image along the Y-coordinate
    -i     Generates BITMAP statements instead of DATA
    -i2    Generates BITMAP statements using X and .
    -m     Generates magic sprites for areas with more than 2 colors
    -p1    Searches best color combination for photo (slow)
    -p2    Searches best color combination for photo (2x2 dither) (slow)
    -o result.bmp
           Outputs the final image, plus highlight of errors (if any).
    -d     Direct copy of binary input file to output (can compress).
           Useful for getting binary data in ASM or CVBasic code.

    Best photo conversion is generated by this command line:
      tmscolor -p2 photo.bmp photo.bin
    Photos will look better if the contrast is good.
    Magic sprites will work only with an image of 256x192 pixels.

Thanks to Leandro Correia for ideas of color conversion.