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acadiel

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Everything posted by acadiel

  1. From this thread: There's an 8K ROM in the thing that has some data (speech rom, or code for the 6809 CPU) The chips in the MBX include: GI GP1000 - Speech Recognition and Synthesis MM52664MBX/N - 8K 24 pin ROM (which we've read out and have a copy of - has 6809 code in it) ADC0809CCN - Analog to Digital Converter HM6116 - Two RAM chips HD68A09 - 6809 CPU (also runs the Coco!) HD68A21 - Peripheral interface adapter 8 pin ADC0831CCN - 8 bit analog to digital converter Assorted 74LS chips and a LM324 and some other LM chips (CD4066, LS74, LS02, LS125, etc) So, it depends on which IC is one doing the joystick interface, it might be the ADC, in this case. We don't have the schematics, so doing a pinout and guessing is probably the best bet. More investigation here from earlier about trying to emulate/reconstruct one: From Mainbyte:
  2. There will always be two files in UberGROM images to "burn" - the 512K EEPROM and the 1284P (UberGROM). They will never be a single file. For the ones that I've released in a zip file, every single UberGROM "image" has two files apiece. Most of them already are available - I had released a zip file of UberGROM images a while back in the Mega UberGROM thread. I'm not sure if what you want was part of it, but I remember distinctly making dozens of them. The other ones are super easy to make for any that are missing. Whomever owns a missing one just reads the existing 1284P IC image (132K in size) and 512K ROM binaries in a programmer. Bundle them and voila, you have what you need to make another image . It probably would be a good idea to tack them onto the same thread that's mentioned in the Mega UberGROM Thread that has the link I put to the others.
  3. I took an inventory of them back in 2000 - here's the pictures: https://www.hexbus.com/TI-99_4A_Home_Computer_Page/Joy_Electronics.html Rodgers passed away in 2008, but at some point, the inventory got stored in a warehouse. Some was OK and some got waterlogged (Dallas - lots of rain.) The family kept it along with his store/office supply inventory. At some point, Mike Dudeck purchased the remaining inventory after it sat in warehouses for many years from the family. You'd have to ask him for the date. Mike has been selling the inventory under "Mike's Musical Memories" on eBay for years. (On a side note, Mike has also bought out Tex*Comp and other vendors, I believe. Someone will have to bring all these up.)
  4. A lot of headphone jacks on phones, MP3 players, etc, need something like this: https://www.arcadeshopper.com/wp/store/#!/mini-amplifier-kits/p/219664449 (I had these made and sent them to @arcadeshopper a while back for this very reason). They work really well at bringing up the volume to a sufficient level to what the console expects. The schematics are here if anyone wants to build one: https://archive.org/download/2771008-schematic (The "C" schematic is the one I used.)
  5. IMO, I think it's about time we made a PCB for some current key switches for a drop in replacement for the TI Keyboard I haven't measured one, but it's in my "one of these days" backlog that I can't ever seem get to.
  6. Just for a FYI, people keep forgetting about this: https://ftp.whtech.com/Cassettes/
  7. Yep. I had to put a small amp inline. https://www.facebook.com/groups/ti99ers/permalink/10158117975449844/?mibextid=9R9pXO
  8. I think that's why we have a thing called a "community". 🙂 It's the best thing that ever happens to something.
  9. That becomes a good question - does this commercial forum software have the ability to back up our specific forums if that time were ever to come so we could restore them specifically to another cloud instance of this same software - just for us? I agree with you and several previous posters, I don’t think any of us ever see, want, or ever intend for that to happen, but I think if the contingencies for the non core forums like this one are thought through for the people concerned, it will help alleviate things for the time being. This hosted forum software IS solid software and good software, too. I just don’t know all its capabilities.
  10. Weird. If it was a floppy chip, Intel only used the 8271 and 8272 as floppy chips, and those had way more than 18 pins. If you want a comprehensive list of all Intel chips, try here: https://www.cpushack.com/wp-content/uploads/2018/06/VintageIntelMicrochipsRev4.pdf - it might help rule things out.
  11. I haven't done this yet, but @Schmitzi or @arcadeshopper I mentioned to the other day - probably take all the DataBiotics carts that we changed from CRU to the 378/379 method and put them in one archive and stick them here in this thread in case someone else someone else comes looking for them. Beyond Wordwriter (32K) Red Baron Flight (32K) StarGazer I/II/III (32K) Desktop Publisher (32K) TI Workshop (64K) At least I think that's all of them. DataBiotics Converted Bank Switching.zip
  12. The TI-74 SDK was not made available to anyone outside of TI. The custom cartridges were developed for companies by TI as a service, and then given to the end user from what I’m told by the designer of the system. That device you purchased allowed the customer to duplicate the cartridge/deploy updates from a new revision that they received from TI. (The cartridges were all flash). Commonly, insurance companies needed new rate tables distributed, and rather than send them 100 new carts, TI shipped them one new one, and the customer would then update all their field cartridges. Some points that I see being discussed - One engineer did the TI-74 port of the CC-40 code by himself, with one system engineer doing the calculator design (and the first engineer the calculator coding). It took about six months from start to finish to do the TI-74. The CC-40 code was used as the foundation of the TI-74 codebase. The engineer reworked the paging routines to be TRAPs instead of CALLs, removed various built in subroutines (the debugger, several poke/peek type instructions, etc) to make space for the calculator mode, used the TMS70C46 variant to integrate the Hexbus into the processor itself, and the processor code ROM (4K) started with the CC-40+ ROM, which had the cassette recorder code built in. (But not the hardware, which was provided by the CI-7). For TI to release the internal development information for the 74, including the fixed address points for paging routines, etc, the one person that’s left would who knows about the 74 would have to review all the documentation to open source it. That person does not have the cycles to do so, and TI will not do it otherwise. (The 74 removed the banking lines. To get the multi page stuff working for the 64k and 128k modules that were made by these 3rd parties, there’s assembly routines that must exist in the module memory space at identical locations and the paging circuitry is inside the module itself.) Secondly, the 74 female cartridge connector is unique. The spacing and pin count is not used by anyone else, and was only used by TI. The molds were all destroyed and nobody else has replicated the cart connector. It would have to be recreated. Lastly, a difference between the TI-74S and the TI-74: The TI-74S allows the cartridge to auto run, bypassing BASIC, has no calculator overlay, and CALL ADDMEM can add 16K of RAM instead of the 8K that the TI-74 adds. Hope this helps.
  13. The terminals (the thermal ones) simply dialed each other over a Viking dial simulator and made a 300 baud connection. Next year, it’ll just be phones, Pyuuta, and 99/4. Two tables…. 🙂 By the way, we made it in a DragonCon video too!
  14. DiskAssembler also used the same type of protection.
  15. Distributing single files, eh? Here ya go - the whole thing. Updated Tursi's readme with context and credit to you for the lower volume BGM. BurgerTimeTursiHack_lower_bgm.zip
  16. Tried this in js99er, and got an "Illegal" when I tried to run it. Thoughts? Load module PC reset to >0024 Frame 1005 running Speech: reset Cassette motor on Executing disk DSR power-up routine. Executing disk DSR FILES routine (n = 3). Frame 1240 running: 58.7 / 58.8 FPS >0010 >02B2: Illegal >0012 >0008: Illegal Cassette motor on Executing disk DSR power-up routine.
  17. Alien Addition: https://www.arcademics.com/games/alien Demolition Division: https://www.arcademics.com/games/demolition Minus Mission: https://www.arcademics.com/games/mission Meteor Multiplication: https://www.arcademics.com/games/meteor Verb Viper: https://www.arcademics.com/games/viper Word Invasion: https://www.arcademics.com/games/invasion Don't see Alligator Mix, Dragon Mix, or Word Radar.
  18. Ooh.... will he be there again next year? If so, I'm dragging my cart there.
  19. In my binder right now, I have: Vol One (only four pages from what was linked) Free Mini Sample Feb 1984 - Sep 1984 (doesn't say Vol anything) June 1986 - Feb 1987 (Vol 2)
  20. Great, thanks! So this goes before the Feb 1984 edition as well as the free mini sample.
  21. Photos. Many of @OLD CS1: our club pics Official photo album
  22. Yep, the dates are on their website for next year. July 19-21 2024. I don’t know when they’ll open the hotel block again but I want to reserve as soon as they do.
  23. There’s also UberGROM binaries that I made too from the GROM disk images that are in the UberGROM thread if you want to make your own carts
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