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CDS Games

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About CDS Games

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    Pocono Mountains, Pennsylvania

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  1. Ever notice the enemy attack patterns in Pleiades? I haven't looked at the code, but the enemies look like they move by consecutive predetermined coordinates. You could set up various x-y tables to simulate any movement pattern you want, and you'd get a pretty decent, though choppy, approximation of Galaga's attack patterns. Of course that's a bit moot now. I missed this stream, but I'm sure this version works way better. Can't wait to check it out.
  2. I've gotten Atari boards in Coleco shells: http://atariage.com/forums/topic/277458-crossover-carts-atari-titles-in-coleco-shells/ As Shawn said, it takes some modification. Dremel would have been good---but I used a file on both the case and a tiny bit on the board. I didn't end up needing any epoxy/glue or anything as screwing the shell back together held the board tightly in place. I've heard that Parker Brothers games are challenging because the top and bottom halves are fused together not screwed, so it's tough to get them open without breaking anything. If you do a search for cartridge shells in the forum you'll find threads where the internals and mechanics are discussed.
  3. Partial correction...I think! I've got most everything to 262 scanlines. Hopefully it works cleanly in 2player mode, but 1-player mode is at 259 scanlines now so you may experience some jitter there. Give it a shot, see what happens. Gauntlet-ScanlineFix1.bin
  4. Great to see this!!! Nukey did some amazing work with that hack....and we were so close to a finished game!! But in the end, it would still have been just a hack--can't wait to see a new WoW programmed from the ground up with the latest technology.
  5. Thanks!! I was able to watch a bit of the show...sorry about the freezes and glitches, this is the first I've ever heard of that happening. So it's a scanline issue?
  6. We had a month of craziness around here....multiple hospital stays, a car accident. Completely nuts. I dunno when I'll be back to messing around with Atari stuff. Let me ask a question though....if you could get Tempest with just one screen rather than 4 different screens, would that be worth a release? Let's say the V screen since that seems to be OP's favorite.
  7. No, no updates. If I do I will post.
  8. Which version? The one with invisible elevators? Start your jump when you are exactly at the level of the platform you are jumping onto. There's I think a four pixel allowance, but if you jump at the same level you should make it to the platform ok.
  9. The backgrounds are drawn in 3 main sections. So in the screen that Darrell posted, the little top windows are part of the first section--two sprites, playfield, and background colors. Then the second "main" section that has the garage door and the columns. Again it uses two sprites, playfield, and background colors. And then the third "sidewalk" section that just consists of background colors. Since the action doesn't take place up that high, the program can spend the available cycles just drawing each section in great detail. Then below the sidewalk where the actual game play takes place, the background switches to a single invariant color. It's very cleverly done, and I agree with you....the background graphics on this title are excellent. It's just frustrating that the player characters looked shoddy in comparison.
  10. Turns out I was wrong in the first post on that thread....the Tempest prototype was not written by Carla, at least according to Carla. http://atariage.com/forums/topic/251026-fixing-the-tempest-proto/?p=3650346 It's actually not that far from done. Most of the good stuff is already in there. As I left it there was a level problem--once that is fixed, then we can set up a bankswitching scheme. Once that works, the rest is just level design and getting the movement tables right, which is tedious but conceptually easy. Maybe I will post the problem in the Programming forum, see if anyone wants to help with the specific issue that's holding me up. Believe me, I'd love to finish it myself and have something tangible in return for the time I spent messing with it.
  11. Ok, I think we've reached critical mass for a new run, so I'll be ordering more boards. Give me a few weeks to get everything together and I'll IM everyone who was interested with more details. Thanks everyone!
  12. I am out of EPROMS at the moment, but I can have some more made if there are enough pre-orders to cover the cost.
  13. I'm trying to implement X07 bankswitching. I've consulted the guide (see below), and it's still not clear to me which address I should be calling. I've also stepped through an X07 ROM and seen that the different banks are called with LDA $1FEx. But then when I add that to my 64k ROM I get nothing. Can someone give me the quick scoop on how to set it up and what values to use? Thanks!
  14. They are definitely a pain. The labels are really stuck on there and don't come off, and Atari boards won't fit in there without modifying either the board or the case. I don't blame Al for not wanting to go through that.
  15. I had some extra Coleco shells and Atari boards and thought maybe I should try to put them together. Threw in a bit of graphics work for good measure, and here's what came out: Yes they are playable! This was a lot of fun....I really like how Coleco incorporated the arcade marquees in their titles. I'll definitely be giving some other games this treatment as well.
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