Subject: Re: [stella] ... [overlays] From: KirkIsrael@xxxxxxxxxxxxx Date: 26 Jun 2002 15:55:18 -0000 |
Ouch...I have a while to go before I understand what Andrew Davie said. (and that much further before I should try adding it to my tutorial) It seems you can get a bit done just by assigning a few name/memory locations at the top, ala "how to build a playfield"... obviously, as memory needs increase, so do requirements to understand overlays and when you need to get into paging, and how many pages there are. Actually, is the idea of overlays that you can use one 16 bit location for multiple smaller variables? (1 bit flags, 8 bit small values, etc) Any doc recomendations? Also, anything that talks about the ORG syntax, and where and how to stick graphics. (More specific question: in Nick's "how to draw", the org $F000 at the top and the org $FFFC .word Start .word Start at the bottom -- KirkIsrael@xxxxxxxxxxxxx http://kisrael.com "I dunno, isn't there a drink that uses a egg? Like a 'gin & egg'?" --99-11-6 ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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