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Scott Robison

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Posts posted by Scott Robison

  1. On 5/25/2022 at 5:41 PM, BruceMcF said:

    And if the C128 game was successful, the 15m C64 installed base means that you would want to do a C64 port ... and once you have a C64 port, the C128 version ONLY adds the fraction of the C128 audience that are unwilling to buy C64 games ... which would have been effectively 0 people.

    Simply focusing on trying to do the most appealing possible C64 game is what they call in Game Theory the "dominant move".

    Right. My goal was to create the most appealing C128 game I could with the available intellectual property. The C64+REU version of the game is better by most metrics, but it has one major flaw: It is only of interest to the subset of the C64 audience that has REU technology available and that is not already satisfied with 64 Robots. Still, it was an interesting experiment.

    Some people play a game to win. Some try to beat a point spread. Some try to maximize revenue.

  2. On 5/25/2022 at 3:45 AM, xanthrou said:

    Then you ported C128-specific graphics to the C64 via REU expansion. No hate though, as REU retro gaming gave the C64 much needed extra gaming horsepower, as evidenced by Sonic on C64.

    Right. There are Reasons(TM), largely experimental, for porting the C128 version to C64+REU. But it doesn't invalidate the fact that stock C64 is less powerful than stock C128. And even then, I still can't do a dual screen on a C64. REU only buys you so much.

  3. On 5/22/2022 at 7:23 PM, EMwhite said:

    Pricing will never be the same.  Hate to be Debbie downer but I just had this conversation (argument) w/my wife that Gasoline prices will never get below $4 (for super) again.  Opportunism, market adjustment, greed.

    You could be right about gas, but I heard the same arguments made when the price of gas shot up to then record highs in June 2008 just to have them drop significantly by Christmas. I think prices will go down again, though it will be inflation adjusted.

    • Like 1
  4. On 5/19/2022 at 1:07 PM, Scott Robison said:

    Thanks for pointing it out. I'll give it a look over.

    A very worthy project. It has the same "downside" of many other projects in that it won't be compatible with as many platforms as I'd like, which to me is the draw of pi2iec. I just need to get to work on it (one week of school left)...

    • Like 1
  5. On 5/18/2022 at 10:38 PM, TomXP411 said:

    I liked it better than the other BBS software. I chose it specifically because it was written in QB and moddable. I built a threading mod for the forums that worked very well, if I do say so myself. 😉


    I'm just funnin' ya! PCBoard was very extensible and customizable, but didn't generally come with source code for that level of mods. Though my scripting language (PCBoard Programming Language) came pretty close, but I'm biased.

    • Like 1
  6. I agree with you to a large extent. I'm not a fan of most sound demos. Not even when I was a young man, much less today as a cranky old man. So many of them sound like garbage where the intent is to show how many tricks they can use instead of creating something that is harmonious.

    That being said, I do like the theme song to The Goldbergs, so maybe there is hope for me (or for chiptunes).

  7. On 5/5/2022 at 12:07 AM, Strider said:

    what about you? Any similar stories?

    I had the goal to work on pi2iec around Christmas. I haven't been able to yet due to other obligations, but I wanted to have as much RPi sitting around to test things. I don't remember the exact prices, and I got quite a bit, but I had to buy almost everything in bundles with extra stuff I didn't really need as the RPis weren't being sold separately.

  8. On 5/2/2022 at 10:32 PM, SlithyMatt said:

    First one to make this code play Conway's Game of Life on an X16 gets a gold star:

    life  {1  . 3 4 = +/ + ¯1 0 1 ∘. ¯1 0 1 ¨ }

    Solid gold star or just gold colored? I need more details!

  9. On 5/2/2022 at 10:05 PM, kelli217 said:

    Maybe someone could write an APL interpreter and/or compiler, and thus of course an APL keyboard would be a necessity—not to mention that the APL character set would also have to be supported...

    I had a class in college that touched on APL (one of four languages we spent two weeks each covering). That is some terse hard to read code (though I'm sure if I had cause to use it as often as C / C++ I'd be used to it and find it second nature).

    • Like 1
  10. On 4/30/2022 at 12:03 AM, Ed Minchau said:

    This topic got me thinking.  I've been using a 1.7 bit notation for a lot of calculations over these last few years of 8 bit programming.  This is just the numbers -1 to 1 expressed using the range -127 to 127. So far I have developed quite a few subroutines and lookup tables to enable a lot of fast 8 bit math.

    There's easy ones, like lookup tables for sine and cosine, more complex like multiplication and division and arcosine, and if I dig through some old spreadsheets I know I've got atan2 and sigmoid and other functions.

    Although these functions aren't 100% accurate,  they are generally quite close. What they are, however, is fast. Multiplying two numbers takes on average 80 cycles (the inputs are both in the range [-1..1], so the output is also in that range, and only one byte).

    What I'm thinking of doing is collecting all those tables and functions in a single 8kb block,  meant to be stored in banked RAM, and then just having a jump table at BF80-BFFF as the interface. Sort of a mini-kernel for very fast fixed point single byte variables. 


    I think a strong argument can be made that such a thing could live in ROM.

    • Like 1
  11. I've locked this thread due to complaints about multiple comments. Note that the topic of the thread is fine, but when the conversation turns to insulting personalities, it's distracting to the community, a topic I have some familiarity with.

    @Jeroen has done nothing wrong, we just want civil discussion. Calling people names or questioning their decision making are not forms of civil discussion. People can take actions you would not without a need for unkind remarks.

    If you disagree with my action you may appeal it. That being said, I'm already communicating with the team to ensure I'm not overstepping my bounds.

    • Like 2
    • Thanks 3
  12. On 4/11/2022 at 6:50 PM, paulscottrobson said:

    It's very similar to the CX16 design. (with a few advantages ; it's faster, no paging and so on). It's just engineered in a coherent fashion. And it exists without burning 5 figures.

    It probably didn't include a preorder for scads of keyboards, either. Just because someone has burned five figures on a project doesn't mean that all that money was spent on prototypes.

  13. On 4/1/2022 at 6:46 PM, Falken said:

    As I read people buying 300W power supplies for this project I wondered: How many Watts or Amps does an X16 actually need? I could not find it in the specs but maybe I looked at the wrong place. Does someone have an answer?


    Thank you.

    1.21 gigawatts with the flux capacitor upgrade. Not sure about a stock board though.

    • Haha 1
  14. On 3/30/2022 at 8:03 PM, Edmond D said:

    With only 3K the VIC 20 didn't take a whole school day. When at school with a 32Kb PET, we'd stick to one game to avoid wasting time with waiting, as we'd be asked to do school work while loading.

    Well, even a C64 didn't take a full school day. It's just my version of walking to school uphill in waist deep snow both ways.

    • Like 1
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