Subject: Re: [stella] Alpha Source From: Manuel Polik <manuel.polik@xxxxxxxxxxx> Date: Wed, 10 Jan 2001 22:10:39 +0100 |
Kurt.Woloch@xxxxxxxxx wrote: > >See it as my tribute to the stella list, maybe call it payback. In no > >way I want to critisize the original work. This stuff made me learning > >how to programm the VCS. Thank you. > I think it's great... it contains a lot of routines useful for writing > games... the vertical blank routine... the object positioning routine... > even a player sharing routine... and so on... If you change the ORG at the end to: ORG $FFFC You gain totally free 2K for experimenting. I use this a lot for all sorts of this and that and quick experiments. You can easily add your own screen drawing routine with but just adding this after the Sucky Zep Demo: ORG $F090 ; This part is my testing code. TestLoop JSR VerticalSync ; Common vertical sync JSR VerticalBlank ; Common do-nothing vblank JSR TestScreen ; Draw your screen JMP TestLoop ; Repeat You maybe want to reset something at the beginning or do your own vertical blank sometime later, but you can start right away with just having to code the 'Testscreen' subroutine. Look at the 'Matt' routine for a really simple example how its done. > >Please inform me, if I missed any stellalist demo earlier than May 97 > >which is not mentioned in the source, so that I can add it in the 4K > >version. > Well, I recall sending a demo called "Jim's heart will go on" to the list > somewhere in May, June or July 1998, which displays a sinking ship and plays > a little tune that was very popular at that time... I know and like that and will definitely add it in the next version. I think it was sent in later than May, that's all. Greetings, Manuel BTW: Hopefully I'm through with reverse-engineering Starmaster this month, I commented nearly everything down to the Bit. And I already have an idea for a little (and secret of course!) MOD of Starmaster, maybe I get that ready as an Easter Egg :-) -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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