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kevtris

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kevtris last won the day on March 23

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About kevtris

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  1. That board lets you load it with EPROMs containing speech data, and the SPR-X emulates the SPR-016/SPR-128 speech ROMs. The former holds 2K of speech data, the latter holds 16K of speech data. The SPO256-012 chip used in the 'voice is custom programmed with the "mattel electronics presents", then numbers 0-9, "ten" "twenty" etc. All of that speech fits into its internal 2K of ROM. The chip on the board is an SPO256-AL2 which was a stock version of the chip loaded with allophones you could buy from places like Radio Shack. This board lets you develop your speech data that will be mask programmed into an SPO256, and then emulate it in circuit using that cable and plug. Interestingly, any SPO256 chip can be used to emulate any other by using the external ROM bus mode, so they took advantage of this. That board lets you stuff up to 32K bytes of data, which is far more than the chip can normally hold (2K), but I suspect it's designed to let you develop devices with more than 2K of ROM, like the Odyssey^2 "the voice". It has 16K of external speech ROMs to go with the 2K of internal ROM. The intv only has the 2K of built in ROM, though (I believe they called it "resrom"). Any other data had to be manually poked into a FIFO chip on the intellivoice to get it into the SPO256-012 that resides on it. I don't think you could do that with this dev board though; the serial speech ROM bus is being used by the FIFO.
  2. I traced the pins of the MC1372 (which mainly conformed to the datasheet circuit, AFAIR) and switched the circuitry around to match the circuit above in the PDF. I didn't really keep notes because it was relatively simple. I didn't use an op-amp.
  3. The good news is these and a lot of other tabletop VFD/LCD and handheld games are in MAME now. Also, it looks like the Internet Archive has a decent sized archive of these games you can play right in the browser. https://archive.org/details/handheldhistory I checked but these two games aren't in it for some reason; Alien Chase was the second VFD game I dumped the ROM for and vectored the VFD. I managed to dump the microcontroller in the star wars game, and we entered the hex data for it from the game's patent also since it's a different version (earlier than the release). These games are in MAME.
  4. I think it'd have to be on BOTH ends of the 32X to function properly, because the 32X acts like a ROM gatekeeper since it can use the cartridge for its on nefarious purposes while shutting it off from the base system. It also apparently doesn't pass signals in certain address ranges either, which is why CD stuff can't work through it. (note this might not be 100%, just going off what I remember from my research).
  5. The side expansion slot on the genesis is a subset of the cartridge connector. All the signals you need are on the cartridge connector. The expansion connector doesn't have all the address lines, and has a few extra enables, but since the cart slot contains all the address lines, these expansion slot unique signals can be easily recreated.
  6. I have no dog in this fight, but I have been reading the thread all along. I think you should get a PR person to handle day to day interactions with the greater internet at large. You call some dissenting opinions "cyber-bullying", after posting the following personal attack a few pages back: Handling dissenting opinions others have is a valuable skill, and one course of action is to just mentally tune them out and ignore them. Another course of action is to read it, and try and see their point of view and move on (again without replying if need be). It doesn't help from a PR standpoint to berate someone for not fully agreeing with your entire vision and having questions about it. No one is saying the idea sucks or whatever, they are just bringing up doubts they might have about certain aspects. Be that as it may, moving on. I watched the October video and have read this thread, and there really just hasn't been a lot to go on in the way of hard information. We know it is a console. and it has 2 controllers. and comes in colours, and plays games. The video says it will be 2D only. I am guessing this was just an oversight, since even modern '2D' games tend to be made in 3D, which allows for rotation and scaling and easy priority. Of course the view is "flat" so it looks 2D, but behind the scenes it isn't. Limiting games to 2D only wouldn't be terribly smart in 2019 (or 2020). There hasn't been a peep about what kind of hardware this system will contain though. Maybe this is still up in the air, but I would think the hardware has to be nailed down pretty soon or else games won't be ready in time for ship, even this far out. Reading the thread, I got interested in some of the games mentioned so I did a little "youtube research" as it were. I chose four games: Horse Racing, Skiing, Microsurgeon, and Horseshoes. What I found surprised me some actually. note: The following is simply what I found, and is not an endorsement or comparison or anything. I was simply curious about the modern landscape for these particular game genres. Knowledge is power. No links will be given of course, since I am just going over what I found. For Skiing, there's several free to play 3D skiing games that look absolutely amazing. One particular game, "Snow" is free to play, but charges extra for extra game modes. Not ideal, but the base game is free. As for Horse Racing, this field seems pretty crowded. Some of these games look absolutely amazing, with high quality 3D modeling. (examples are Pharlap, and Rival Stars Horse Racing. The latter is a mobile game). My friend bought 'Surgery Simulator' on steam for around $5 a few years ago, and it seemed to be a pretty hilarious. In one game, you have to perform an operation in the back of a moving ambulance, complete with it shifting around as it makes evasive maneuvers. You can even drop things out the back of the ambulance (like the patient's brain!) and it will go rolling off down the road. While not exactly a "Microsurgeon" clone, I think it was a pretty fun take on a surgery game. And finally, horseshoes. I only found an arcade version that used a trackball, but someone did indeed make it. I wasn't sure I'd find a videogame version of it. This is not considered modern though, having come out in 1990 and released by Taito. Speaking of games, so far the only games I know about for the Amico are ports of existing games. These are going to be 25% of the games for it, but so far those have been 100% of the announced and talked about titles. (not that I am complaining, mind you, just pointing that out). So that's my honest look at things as I see it with the information given at the current time. When more hard information comes out eventually, my take on it will likewise update. (btw , you can hit the little + next to reply on each post to do a multiquote reply and reply to more than 1 post at a time.)
  7. This functionality seems buggy. If I am on the last page of a thread, and it's showing say, 3 posts, and hit 'back", it does the scroll to the top thing but only shows 3 posts from the previous page, instead of the entire page of posts. I have to hit refresh to make it display properly. I also noticed that the "click on the last page of a thread thread and go to the last unread post" functionality is broken too, UNLESS you click a thread title on a sub-page link. then it works. Otherwise, it just takes you to the top of the last page and you have to manually scroll down to find the unread posts. If I click a thread title, it just starts on the first page. I noticed that quotations were broken after the upgrade for all posts before the upgrade day, but checking now that seems to be fixed now.
  8. a necropost on a 17 year old thread... that's gotta be some kind of a record.
  9. That thing atari showed off is what's called a 'hand model'. I guess because they make them by hand. Usually these are used for trade shows and for mechanical fit/testing purposes. The "PCB" is most likely a piece of aluminum milled to the thickness of a circuit board, with holes drilled in it for major parts like connectors that will stick through the walls of the enclosure. The original prototype with the LEDs on it are pretty typical of a trade show quality hand model. The LEDs most likely are being run off batteries inside it to give an idea what the finished product will look like. Why atari would show off a clear hand model that is obvious phoney baloney is anyone's guess. It's not much more than a more expensive version of the Retro VGS' cardboard PCB with parts glued on. They stepped things up to aluminum. Hand models like that aren't even terribly expensive- at the very most, a few grand for a really elaborate one like the clear one they showed off. Again, these things are designed for checking fit and form, and not function. The guys that make these things are really good at it, and can replicate the look of injection molded plastic using various finishes on a 3D printed base. They can even do things like make custom connectors that work if you want to put something inside or connect it via a wire to your proper job hardware prototype.
  10. I tested the reprint. I tested it on all three major models of CD unit, too. a US model 1 and 2, and a japanese CD unit (which looks like a model 1). The cart I have is indeed the reprint, and I opened it up to confirm it's legit. It is, and has the schmoo covering the chips like other pictures I've seen.
  11. I don't think I could handle it. I only work on hardware that gets released.
  12. I already fixed that one a week or so ago, but I have not pushed the update yet. I fixed a few other audio issues as well, such as the continuous tone on Phantasy Star IV
  13. As far as I can tell, here's two ways used to detect it in the games. The first is checking to see if the extra RAM exists. The other way is to write to some of the AY registers, and see if you can read back the values you wrote. Adding the AY should fix detection on everything else.
  14. It's because the nt mini has 240 lines of picture information. 240*3 = 720. The msg and snt only output 224 lines (well most of the time, and for NTSC msg always). This means a 3x scale will give you 672 lines like mentioned above, thus you will get some letterboxing. You will have to use vertical interpolation if you wish to exactly fill the screen, or you could chop some rows of pixels off your monitor, I guess. (not responsible for loss of warranty, sanity or marriage). There's simply no way to exactly fill the screen with an integer scale vertically for this reason. It's a mathematical impossibility.
  15. I think I found out how they are prototyping things and why it's taking so long... They are using Tortilla-Board technology. http://www.seattlerobotics.org/encoder/199804/breadbrd.html
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