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fabrizio

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Everything posted by fabrizio

  1. fabrizio
    Finally the cplds arrived, replaced with the new batch and, finally it works... In the previous batch out of 10 xilinx only three worked....
  2. fabrizio
    the FW is the same for all and the lock bits are the same (checked directly with atmel-ice), I attach both the TDO and the TCK seem blocked by something. I assume that the update file is read well since the LED lights up steadily, are the CD0-CD7 bits affected when programming the cpld? Sicuramente è una stupidaggine ! tck.mp4 tdo.mp4
  3. fabrizio
    They are new constructions, I have built 5 of them, two without problems, three have this defect, I was wondering if anyone assembling these PCBs has had a similar problem. Thank you
  4. fabrizio
    hi, everyone, I have two fg99s with this problem, when I insert the SD card with the update.pld file the LED stays on, and never goes off. Has this happened to anyone? I tried replacing both the 328p and the Xilinix...
  5. fabrizio
    What do you think is the game or program to best test FinalGrom?
  6. fabrizio
    Ciao everyone. I have this issue. When it starts cold, you can see characters flashing (video). If try to heat up the 7400 (C15) or the 74175 (C13), it start working fine: clear screen, rset ok, 480 nS and 3,5 uS perfect.Of course, I've tried replacig them. grazie VID_20240209_185251.mp4
  7. fabrizio
    thanks😀 the pld file works (80k) and I also checked on github, I continued to use this file always in github finalgrom99/vhdl/src/fg99-xsvf (1K) . I was probably wrong about something..🤬. VID_20240217_132111.mp4
  8. fabrizio
    thank you very much, we assembled these FGs, the situation at the moment is this, AVR programmed with Atmel ICE and verified with a working FG. I don't understand if the problem could be with CPLD or with ATMEL. When I power the FG the LED flashes approximately 1 time per second, if I insert the SD with the CPLD programming file and do the reset, the LED flashes six times quickly, I have tried various SDs..
  9. fabrizio
    Can someone send me the file fg99-xsvf for working ti99?
  10. fabrizio
    I have tried some that I have used in the past, perhaps the problem is another, we are soldering some FG99s for the associates, that's why I was asking the meaning of the LED that flashes for 6 times. Any errors during the update will be indicated by a blinking LED. The blink pattern tells you what kind of error occurred: #U1 (o)........(o).........(o)........(o)........(o)........(o) ... indicates a bad SD card reader, a bad SD card, or the wrong filesystem,
  11. fabrizio
    Good morning, we are building some finalgrams for the associates, but I have a problem with programming the Xilinx. Here's the situation: when I power the FG without the SD, the LED blinks once per second approximately. When I insert the SD, the LED blinks rapidly for 5 times, stops, and then starts again. I've tried multiple SD cards, do you have any help? THANK YOU
  12. fabrizio
    Hi, I tried this solution which uses the trimmer and a 10 uf capacitor, in fact the volume has improved, but it is still low. Has the fw been changed?
  13. fabrizio
    do you have the schematic of this 15 pins connector?
  14. fabrizio
    do you have the schematic of this cable ?
  15. fabrizio
    I use a ti 99 as a forklift to do some tests, for the micro I used a socket with a tulip pin, but if I find a zero insertion socket I try it ... As for the TMS9929 I bought 10 in china, they work everyone, incredible. While the first 5 purchased some time ago, only 1 worked ....
  16. fabrizio
    To test the tms9929, I use the ti99 with a zero insertion socket.
  17. fabrizio
    Ok
  18. fabrizio
    I think that's just the problem, but I also have too old paper is yellowed, I would like to try new paper.
  19. fabrizio
    Greatest
  20. fabrizio
    It may not be a connector problem but a control circuit problem ... The eprom could be faulty..
  21. fabrizio
    Thanks to the schematic I repaired mine, it had a faulty uln2003. Simple enough since it drives the engine, now the problem is that it doesn't print well in the center, only by pressing lightly I can print. Wonder if anyone had the same problem ...
  22. fabrizio
    Grazie mille.
  23. fabrizio
    This information is very important for any projects I have in mind using the parallel port. I cant find the disk image.
  24. fabrizio
    This information is very important for any projects I have in mind using the parallel port.
  25. fabrizio
    congratulations, a beautiful project!
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