I am looking for a way to get sprites onto my HP Prime, to make a little game.  I have been able to do it, using Tim Wessman's DIMGROB generator, found in the second post down here https://www.omnimaga.org/hp-calculator-programming-and-support/sprite-data-conversioncompression-discussion-(hp-prime)/ - although, when I use that the pixels that I assign the transparency colour, are not transparent on the calculator screen they are white, and drawn over the background.  Is there a special way to activate the transparent pixels output by that program?  If you can get sprites surrounded by transparent pixels from it, could you please show me a small example?

There is another program, that has a screenshot showing that it works, 4th post from the bottom of this page https://www.omnimaga.org/news/hp-prime-prototype-performance-test-color-graphic-programs/30/ it used to be hosted at: http://www.mirari.fr/yVxE but it doesn't seem to be there anymore, and an unknown file is downloaded when accessed by the Wayback machine.

Does anyone have a copy of img2prime that Deeph made?

Thanks for any help.