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tjb

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Posts posted by tjb

  1. Posted

    Hello,

     

    Here is an old work of mine..but it has got a new element.

     

    For those who attended the Hardsynth discussion: Hardsynth was claimed to be implementable in game code.

     

    So, I tried a simple hack, just to give a modest proof of concept.

     

    The tune you hear comes from the RMT player implemented in the scroller code, so it takes approximately 15 rasterlines of CPU time away.

     

    Imagine this:

    -scrolling MCS (G2F)

    -enhanced pokey tunes in this style & some sound effects

    -a bit of action

     

    ...what this means, you can think of yourself ;)

    Wow, nicely done!

     

    tjb

  8. Posted

    Ver. 3 - This version is the same as Ver. 2 but has some scrolling instructions on the title screen. It also has an easter egg, but we don't know how to trigger it.

     

    Any other info about this Easter Egg? Could be found via disassembly if it's partially known what to search for.

     

     

    EDIT : found this...

    http://www.fyyff.com/mt/archives/000723.html

     

     

    Do you know what the message is?

    Cool blog entry. I wish we had more of this sort of thing where authors would share a bit of the technical details. Any others?

     

    tjb

  11. Posted · Edited by tjb

    Anybody know whatever came of this company? As I understand it this outfit (a single person?) obtained the rights to Mac/65 and SpartaDos (and others?). I wonder if the source code for these products is still lying around somewhere. It would be really cool if the sources could be released as open source to allow continued development. It would also be a great learning tool. :ponder:

     

    tjb

  20. Posted

     

    Also-- open question to anyone who knows-- how difficult is, or what's involved in, porting an 800 game to the 5200? Let's assume there are no special considerations, such as a 128K machine, just a plain manilla game. I'm just wondering if it would be possible for idavis' Sudoku 800 game to be ported to a Sudoku 5200 game?

     

    MR

     

    The Asteroids clone I've been working on was originally written for the 8-bits. It took me about 3 days to convert it to the 5200. If I had done things a little differently it would have taken much less than that. The joystick/keypad code took a little work to get right. Also, I bypassed the usual title screen and by doing that I had to perform a fair amount of initialization that is normally handled for you. This wasn't immediately obvious (at least to me). The biggest pain was having to move some things around in memory - namely the display list and many variables. Having said that, the 5200 is actually easier to deal with. Since it's strictly for gaming the memory is laid out better. The 16K RAM is contiguous and you have a nice 32K contiguous block of ROM space to work with. Also, very little of Page 0 is used. Finally, you have more buttons to work with and the keypad is at your disposal. For my game I use one button for fire, one for shield, and any keypad button for hyperspace. You can also "flip" by pulling back on the stick. This allows you to use flip, hyperspace, or shield at any time instead of having to pick one like the Atari Asteroids game.

     

    -tjb

  22. Posted

    I'm in the works of getting 5200 shells made right now. Just gotta figure out what colors I'm doing and a per unit price. I'm not gonna be selling any untill after I take my break though. I figure I'm gonna make 1000 of them. Cause what Al said is true, homebrews might not sell in large numbers but repro's sure do I can atest to that hell I've sold nearly 100 of them in the last month alone.

     

    Man, that would be great! Please let me know when they become available for sell.

     

    tjb

  23. Posted

    I looked into it. I have access to Plastics molding, but there wasn't enough interest here to warrant the high cost of making the Die.

     

    Is that to say that you would have to sell a fairly large number in order to recoup the cost of making the Die?

     

    tjb

  24. Posted

    Aside from using cases from common carts, does anyone know of a source for 5200 cases? I wish someone offered them for sale in quantity. I plan on doing some cart building in the near future and the cases seem to be the one thing that isn't readily available.

     

    tjb

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