Paul wrote:
> There's some truth to that, but really what's killing me is SIMULTANEOUS
> two player. I could easily free at least 15 bytes if I didn't let both
> players play at the same time.
At least, you have some "horizontal separation", so you can move around the
writes to GRPx quite a lot.
BTW: You aren't using VDELPx, right?
> The big problem I'm having right now with a huge ROM is that you can't
> access it all at once. I was thinking it would be easy to store all my
> levels in all the space I had left, but it gets tricky when you have to
> spread them over 4 banks. I've had to split them up in odd ways. One bank
> contains all the pointers to the screens, another contains all the control
> structures (which screen comes next etc.) and two other will contain the
> playfield data.
That's how my layout of Thrust ended too. It doesn't look nice in the code,
but it's how you must do it.
> Here it is. Pages and pages of sloppy code. ;o) I'm up to 5 banks
> now. If you assemble it, note that there are bugs right now since I'm in
> the process of changing the level structures, but the first level plays okay.
The code worked quite good.
I wonder why you haven't annoted the total timings inside the kernel. How do
you know, at which line-cycle a eg. PF-register write happens? When you remove
the last WSYNCs in your code, IMO that will become a problem.
Have?fun!
Thomas
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