IGS PGM STEREO MOD

I experimented a bit with the IGS PGM version of Frog Feast:
http://frogfeast.rastersoft.net/PGM.html
http://frogfeast.rastersoft.net/PGMSrc.html

I didn't get the NeoDev compiler to work, it just hangs indefinitely. I think I used a gcc built with the script from http://www.aaldert.com/outrun/sdk.html , but I used so many different GCC-68k cross compilers over the years, and bootstrapped it several times myself, that am not sure which one I have installed right now...
I did use the libraries and linker scripts from the NeoDev package, though.



I had to fix...

This is a quick pipeline test converting tilemaps data for IGS PGM and MVS, mainly to get a feeling for tilemap memory requirements. To try this you'll need to merge them with your own kov2.zip and ssideki2.zip, because these archives only contain my changed files. They are 7-zip archives wrapped in zip archives. It's probably easiest to set up a separate MAME so you don't mess up your main copy. Apparently the only way to launch games in MAME with invalid checksums is to use the command line.
The stick scrolls the map, buttons select the next or previous map.

The original graphics are...

Well, some progress... it doesn't display all sprites, and it hangs, but at least something! This is a 32x32 tilemap with some sprites on top.

Edit: Art from https://cainos.itch.io/pixel-art-top-down-basic