Subject: Re: [stella] there is no spoon. the missile won't go left. From: KirkIsrael@xxxxxxxxxxxxx Date: 25 Jun 2002 19:59:26 -0000 |
(I accidentally replied directly to Thomas with my second problem...but then I was able to solve my third on my own! So I thought I'd put a summary of lessons learned here...) Problem: HMOVE needs to be done right after WSYNC Lesson Learned: read both paragraphs of description in Stella doc Problem: The "leftmost" bits of HMP0 are the ones that matter, not the rightmost that you might expect from counting in binary Lesson Learned: read the pointy sharp edged stuff at the back of the Stella doc, not just the nice big fluffy paragraphs Problem: It is much more reasonable to an HMOVE at the top of each screen, not the top of each frickin' scanline Lesson Learned: don't be such a dunderhead H'ok! Next general question...is there a document that talks about sensible variable placement with the 6502? I can make some guesses based on what variable locations people use in their own programs, and I know you want to keep it on the opposite end from the stack (and probably not use the stack that much anyway it seems) Actually, with what I have now, I might be able to start the first draft of my first of what will hopefully be a series of tutorials, starting rather clean and sparse and boring and then moving on up from there. Hey, does anyone remember the "Dr. C. Wacko" books? Looks like they had them for Atari, Commodore, and Apple. I haven't seen one in forever, and I'm not sure if I'm motivated enough to get one now, but I loved the copy I had, it seemed like a great way of learning languages. (In any event, I don't think I'm up for that level of cartooning, but I'll try to keep the tone light.) -- KirkIsrael@xxxxxxxxxxxxx http://kisrael.com "If anyone disagrees with anything I say, I am quite prepared not only to retract it, but also to deny under oath that I ever said it." --T. Lehrer ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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