Per the emulator's author, under the homepage message forum:

"I've just uploaded an interim 0.3.1 release - same link. Executable and release notes have been updated.

This fixes the following:
- fixes a bug with Sys21 (Starblade's) fullscreen support, where it wasn't using the actual display resolution
- more subtle fix to resizing, to use content area, rather than full window size
- sizing fixes now work with Sys22 (Prop Cycle)
- Prop Cycle textures are no longer "chunky""

Get it here:
http://www.machna.com/games/

-Trebor