Jump to content

Edmond D

  • Posts

  • Joined

  • Last visited

  • Days Won


Everything posted by Edmond D

  1. Anyone up for Toilken Ring? I just couldn't resist. Whole bunch of communication devices - http://www.nationaldatamux.com/Gandolf.htm - I believe I've used some of them in my past retro days.
  2. I was out trolling for some humour. I suspect now I'll be watched by some evil eye. Anyway, for those here for the long run, they'll know that any physical communication media has its limitations and will adapt.
  3. I've dealt with a whole bunch of improper "proper" RS 232 devices in my life. I use to have a book that was more or less a lookup/cross reference of a ton of devices to what their actual pin-out were so that a person didn't have to sit down a work one's way through. RS-232 was perhaps the worst standard in that no one checked/enforced compliance, unlike today where standards like USB make life vastly easier. Of course standards are changed/improved over time and fragment till the next one comes along to replace it. I was once part of a company that was manufacturing a DTE device. The put one full serial port on it implemented in hardware, and a second one with only Tx, Rx and Gnd wired up. When a customer asked for a second full serial port, management came to the team and asked if it could be done by implementing it in firmware without redesigning the device/circuit board. Anyway, for the hobbit who is running RS-232 over longer distances they would/should be aware that RS-232 isn't the ideal standard and choose devices/interfaces that were designed for the distance and the environment they are deploying in. PS - yes, you choose your words carefully, but others are sometime vague or unaware.
  4. A MAX 232 chip uses a charge pump to generate levels that work for RS-232 transmutation with only a 5 V chip power supply. See https://en.wikipedia.org/wiki/MAX232 and then onward to the data sheets. In industrial applications, having a maximum swing of voltage for signalling is great, as these environments usually have high noise and long cable runs. In an hobby/office environment signalling voltages can be a lot less and still work well.
  5. It looks out of date, since it used the older R38 version of the emulator. When will the demo use R39?
  6. Thanks for there rewording, appreciated. I'm not sure exactly if its a trivial matter to update the online emulator or not, or even where it falls in the queue of things to do. I did hear that the forum transitioning might take some time. Anyway, I'm happy to see that the forum, emulator and X16 codebase is moving "forward." As well, that there is a active and vibrant community here.
  7. What a great discover/isolation of the issue you are encountering. I assume that those who wrote the ROM code will be able to track the issue given this great description and provided code. Perhaps the community needs a couple of volunteers to get issues from the forum into the correct issue database - https://github.com/commanderx16/x16-rom/issues
  8. 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.
  9. Perhaps I misread/misunderstood this post in the thread - I assume that with the conversion of the forum that updating the web emulator would take some time. It currently boots in R38.
  10. Remember the simple days, when you typed LOAD, pressed play on the dataset, and waited?
  11. Thanks for that bit. The notion on how fast the existing software gets moved to R39 still stands.
  12. So for us mere mortals, the question becomes when to move from R38 to R39. My stance would be when the software(games) I use(play) are R39 compliant, or that my need for an improvement to support the very limited development I'm doing (or hoping to do) needs R39 functionality. Given that the online emulator will remain at R38, perhaps jumping to R39 on my local machine would be relatively safe. While it would be nice to run both on one computer, I could put R38 on another machine as a solution. The interesting item to watch is to see how fast and what gets ported to R39. I believe that will show how invested the community is in the X16. Thoughts?
  13. I've seen management creep and marketing creep. Then there are the creeps in sales
  14. Thanks for documenting your work for others - I believe it will be a very useful set of instructions for some. Having the audio example and SD implementation would certainly aid others as well.
  15. It looks like he's hit a brick wall Joke aside, it does show that with determination that the VERA design can be made to work outside the X16 platform by those with talent. Congrats!
  16. Revive some of you hope - projects like this might help. https://www.kickstarter.com/projects/lukas-remis/tank-mouse-your-new-amiga-mouse
  17. Hopefully more things happen soon Thanks for the update - I'm sure some will be looking at code quite soon.
  18. Bonjour, welcome aboard what is a very good community. While it seems the peak of the forum was in 2020/2021 there is enough material here to keep one busy reading for awhile - everything from speculation, design discussions, to how to optimize programs for the platform. The X16 design goals sound exactly what will interest you. We're all waiting for the prototype to be finished, then kits shipping. IT most likely will be awhile longer, so download the emulator and get a head-start to pass the time.
  19. Sorry if I seemed to over-react. I've generalized that most technical people don't have good visual design skills.
  20. I agree - while cute I come to read and comment. A second "read-optimized" theme would be my strong preference and that would be the one I'd use. PS - I'm on a MAC so I can't compare to a Windows platform, nor a *NIX one.
  21. Very doable as an expansion card on the X16 platform. Take a look at how Ben Eater interfaced a LCD to a 6502 process by putting it on the address bus of the CPU. LEDs would be much simpler as there is no controller that requires programatic steps to get data to be displayed. Simple basic pokes could switch the LEDs on and off.
  22. Voltage is only part of the power equation. Current is the heavy lifter. I've had the privilege of seeing a superconducting coil running at 1 volt and near 500 amps in person in the late 80s. The magnetic field as it ramped up caused a Fluke multimeter (bolted to the floor) to fail at 10 ; at 25 ft one could hold a quarter in their vertical palm without it falling to the ground (not that it would if let go.) Cables have their advantages - my wired network is a lot more reliable & secure than a wireless one. With switching high power loads off and on cabling makes sense. Any high power connection probably should have opto-isolation to a controller; fuse protection isn't ideal as it primarily limits current and that the current must exceed the value for it to disconnect the circuit. Are you thinking of trying to "wi-fry" a possum? An Arduino is a good platform (or a Basic Stamp) if you wanted to home brew a system, but an industrial PLC would be a better choice IMO. These solutions require power, so when the electricity goes out things might not work out well for the chickens.
  23. Like RS-232, wire based ethernet has evolved - see https://en.wikipedia.org/wiki/ISO/IEC_11801#Category_8 Similarly there is some backward compatibility in the standard for certain physical media, but a divergence in connectors. I don't know all the details, since the CAT-5 stuff just works for me. 120 Volt AC systems aren't standardized across the planet, 230V systems are more common. Even the North American system has issues - one can incorrectly switch the live, neutral & ground wires and still get power, but bad things can happen when miswired devices are used. https://en.wikipedia.org/wiki/Mains_electricity#/media/File:World_Map_of_Mains_Voltages_and_Frequencies,_Detailed.svg Motor control power is best served by a separate independent power system for many reasons. Most industrial I/O I've used is 24V DC powered by a separate supply from the main controller's one. The expansion port could be used to control a 12V device with the right interface circuitry. That's a lot of "horse power" for the chickens - they must be very special for that much computing force. It's doable, but might be overkill. I do like the thoughts of making networking simple in basic on the X16. With your ideas and enthusiasm, finding a way to make it happen seems likely.
  24. I appreciate the response. I do hope that the "try it now" functionality can be made to work securely when the move to phpBB happens. Given that the content is migrating, the functionality might be possible and the risks with remaining see unfavourable and that we're starting into March now it looks like the switch seems to be justifiable now. I see that at the time of posting that there isn't enough money to continue with the current forum too
  25. I wasn't aware that Murray2 was an invision forum - it seems different, but that could just be a factor of skins/versions. It seems the actual posts were not archived in Wayback, so the bits may be forever scattered throughout the virtual world. I agree that open source software tends to be a better long run investment. Being a "captive" customer is never a nice thing, and breaking free before the next crunch is desirable. Given that you're working for fun and free is very noble - I'm sure everyone appreciates that. While the downloads and try it now features are not the core to the forum, they do round out the site. Having an archive of the files as a start would be bearable; the forum forum posts are the real gold for the community. I can live well without the awards/badges/leaderboard or ever the direct messaging system. Almost mandatory humour -
  • Create New...

Important Information

Please review our Terms of Use