…I have made progress on the graphics side of things! (Also, it took me 3 hours to get sound working, not 5.)

Turns out that I spent a lot of time wrestling with the code where the problems were in the .bmp converter (I was loading the two nybbles in the 16-bit image around the wrong way and then putting the colour information into bitfields around the wrong way, too), although it goes without saying that I also had plenty of mistakes in the VDP code itself.

I’ve yet to get sprites working, and there are still more flags & stuff in the VDP registers which aren’t (but should be) implemented.

So here it is! http://pubacc.wilcox-tech.com/~greaser/stuff/ld18/gm-d002.jar

And now it’s half past Sunday and I have to be up early for church so I really should go to bed. Good night!