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SlithyMatt

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Posts posted by SlithyMatt

  1. On 11/24/2021 at 12:54 PM, AlexPaterson said:

    However, it's very quiet

    Well, you did pick a very low frequency: about 265 Hz. Maybe try a higher frequency by poking 4 instead of 2 in the high frequency byte. Also, I don't imagine that the for loop gives you a very long tone. At 8MHz, the X16 should plow through that pretty quick.

  2. On 11/23/2021 at 11:28 PM, Cyber said:

    What do they do on Chromebook?

    We are homeschooling right now, so they are using it for schoolwork, which is all web-based, so everything is through Chrome. There are other apps they can install, but we have them on locked-down kids accounts that require parental permission to install anything.

    • Like 1
  3. On 11/23/2021 at 12:53 AM, Tatwi said:

    Give it another 5 years and all those kids who grew up using Chomebooks in school may well demand ChromeOS/Android laptops and desktops in their workplaces and homes. I am pretty sure that was Google's long game and it may well work for them.

    Maybe! My kids all have their own Chromebooks, and used them at school. I don't think they used any Windows machine, unless they did something with the teacher's PC. And they don't use any of our Windows machines at home, only another Ubuntu laptop I set up for them with some games, including RetroPie. It's extremely likely that they will make it to high school without any significant Windows experience, and I'm very OK with that. If Windows has lost all relevance by then, I will be really OK with that, too!

    • Like 1
  4. On 11/18/2021 at 9:31 PM, Tatwi said:

    Canada Savings Bonds don't make a lot of sense to me. It took 10 years for that $100 bond to earn a whole $20.

    That's a bit under 2% interest, compounded. Better than a savings account, but an index fund would beat it over pretty much any 10 year span. But, markets do collapse more often than national treasuries, so public bonds are usually pretty safe.

  5. On 11/15/2021 at 11:51 PM, Scott Robison said:

    I *think* that is problematic since BASIC is in a different ROM bank than the kernal. Maybe there are stubs in BASIC rom to forward to the real kernal calls, though.

    The Kernal jump tables are recreated in the BASIC ROM, so it's not an issue. It will automatically bank switch for you. Like the C64, you can access the CPU registers and flags through RAM when doing SYS calls:

    A: $030C

    X: $030D

    Y: $030E

    S (Flags): $030F

    Carry is bit 0 of S, so you want to set that to have PLOT ($FFF0) return the position rather than set it. Then, after the call, the X register (ironically) will have the row, and Y will have the column.

    image.png.fbed887cbae6fc24641db27991927399.png

    • Like 2
  6. Pr0n-bots are constantly scanning YT for new videos and posting links in comments. The most prevalent ones appear to be from Russia. I used to, without fail, receive two comments from the same bot within the first 15 minutes of uploading a video. They would just be URLs, and the shell user posting them would switch up. Seems like the YT spam filter AI has finally learned the pattern and it doesn't happen anymore. Just be diligent about reporting them and the AI will learn and improve.

    Good luck with your channel!

  7. 36 minutes ago, Edmond D said:

    Look at the VIC 20, Atari 800, or even the Timex Sinclair - non of these devices had the benefit of mass marketing

    Is this a joke? All three were mass-marketed, and had substantial budgets for prototype development and marketing from established corporations.

    • Like 2
    • Thanks 1
  8. 10 minutes ago, Scott Robison said:

    I should be socially conscious and find a blind subcontractor to convert my PETSCII graph paper into a PCB

    I suppose that's OK, as long as they don't sully it by creating a Gerber file in between.

    • Like 1
    • Haha 2
  9. 1 minute ago, CursorKeys said:

    What I am "dreaming" about, is being able to load a >64kb single pgm file

    Well, then that would have to be something other than a PRG file. One could have a special loader program in memory that could open such a file and load its segments appropriately. But deployment of separate program and assets is just a much better way to deliver software, especially when you don't have the horsepower or RAM to load and decompress a large file. I think the common deployment strategy will be a zip file that you then decompress with a modern computer into an SD card directory, if you aren't buying a pre-loaded SD card (which I intend to produce for my games).

    • Like 1
  10. 1 minute ago, CursorKeys said:

    I am curious how the simple prg format could cater for this

    In a nutshell, there are two ways: make a big PRG file that can be loaded into contiguous RAM and then copied out to other parts, or just have multiple PRG and BIN files and one executive PRG that does all the loading so that the user only has to load the one file, while the others sit in the same directory.

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