Fill Routine

[boriel]

I've found that somehow ZX Basic doens't like IX messed with, so if I do:

Code:

Asm
   push ix
End Asm
SPPFill (x, y, @gpPatterns + (ex << 3))
Asm
   pop ix
End Asm

It just works! Not a big deal, but I just wanted you to know.

I might have something to publish very soon

That's it. ZX Basic requires IX register to be preserved before exiting/entering BASIC functions. It's used to manage the stack frame: the parameters, for example, are loaded using (IX+n), etc.