Although Norbert didn't supply the source data for the copyright message, it was a trivial matter to load a screen shot from his emulator page into a graphics editor, crop the message, reduce the colour depth and save it as a Portable Bitmap File - a text-based format perfectly suited to turning into assembler source data statements.
And while I was at it, I centered the screen on the IIGS display. Again, trivial, since screen accesses are all performed via an index register relative to the start of SHR memory - a constant defined in my IIGS .inc file. Simply adjusting the constant by 4 lines and 32 pixels ($290) was sufficient to center the display for each and every rendering routine.
|Centered and a less obtrusive copyright message|
Now for the player ship...