Image Map Image Map

Search:

Type: Posts; User: Dwight Elvey

Page 1 of 20 1 2 3 4

Search: Search took 0.09 seconds.

  1. The worst I got was a ASR33 teletype. It came in...

    The worst I got was a ASR33 teletype. It came in a seller fabricated box, wrapped with a limited amount of duct tape. The padding was a number of old throw pillows and such junk. When the package...
  2. Replies
    22
    Views
    556

    It would be nice if he'd show the labels on all...

    It would be nice if he'd show the labels on all three tapes.
    The one tape looks like 4K Medic. One wonders if that is a game or a debugger.
    We can't see the other tape.
    Dwight
  3. The family will complain too much about the...

    The family will complain too much about the plastic smell. Then they open the door and let all the heat out.
    ( they do that when I'm soldering as well )
    Dwight
  4. Turn them into the post office. This is clearly...

    Turn them into the post office. This is clearly misuse of their free mailers.
    Dwight
  5. Replies
    22
    Views
    556

    TTY? What does that mean? It is a tape, it could...

    TTY? What does that mean? It is a tape, it could be sent by TTY? It is not 5 bit, either. It looks to be 8 bit data.
    Dwight
  6. Please reread my post. I said to bring the AC...

    Please reread my post. I said to bring the AC voltage to the point that you had 1V on the 18V lines. It is not likely that 1V AC will even forward bias the supply diodes. Caps should not be warm. It...
  7. Look to see what level the SD supports. Many of...

    Look to see what level the SD supports. Many of the newer SD cards won't work with older software, regardless of the fat used.
    Dwight
  8. Typically, the only damage done is some arcing at...

    Typically, the only damage done is some arcing at the wall socket. As far as surge protectors, I don't recommend using them without some secondary protection, such as a thermal fuse or mounted in a...
  9. Replies
    22
    Views
    556

    Is that Try or Fry or what. The Load 1000 and...

    Is that Try or Fry or what. The Load 1000 and Start > 90 might be IBM code. Claimed 1969 is before uPs so it is likely some mini or main frame. It might be EBCDIC. The start 90 might indicate BASIC...
  10. It looks like the dial may be backwards so check...

    It looks like the dial may be backwards so check that you are controlling it right.
    Look on one of the the 18V lines start them at 1V. Check both the + and -. They should be withing 0.5V of each...
  11. I'd have ordered a couple 3717 myself. They seem...

    I'd have ordered a couple 3717 myself. They seem to be common on ebay. Like you say, it is almost impossible for the resistor to burn out on its own unless he shorted the line with a wire.
    Dwight
  12. I'm not sure. I'd need to analyze the circuits...

    I'm not sure. I'd need to analyze the circuits much more. If power was applied where it shouldn't have been then it could have. Still, we did give you a list of likely suspects. Using an ohm meter is...
  13. Replies
    5
    Views
    133

    Just remember, rare and valuable mean two...

    Just remember, rare and valuable mean two different things. Valuable is what people will pay for something. As KC9UDX says, things that may have had less value in the past are becoming more valued as...
  14. If you have a limited number of items to analyze...

    If you have a limited number of items to analyze and they are numerically close, it makes sense to make a jump table. This way you only make one offset calculation and then one or two jumps,...
  15. I hope you ordered several. There is likely going...

    I hope you ordered several. There is likely going to be a lot more smoke before you done. There is nothing in the normal operation of that circuit that woul blow out that resistor. What ever it was...
  16. If you had Win32Forth on you machine I could...

    If you had Win32Forth on you machine I could write the code in about 20 to 30 minutes. I have similar code that read Hex files an writes out a binary file. It wouldn't that a lot to modify it to...
  17. As for the 150 ohm pullups, there is a...

    As for the 150 ohm pullups, there is a specification for the total ground current for the STM32F1xx and STM32F4xx parts. Several 150 pullups at a time will likely exceed that value. These were really...
  18. Dave has done what I've been saying for years,...

    Dave has done what I've been saying for years, "to debug a processor requires software on that processor". There are a few things that I especially like about Dave's code for what I've seen so far....
  19. Replies
    5
    Views
    145

    MikesArcade.com has N82S129 and can do custom...

    MikesArcade.com has N82S129 and can do custom programming for you. It doesn't show how much for the programming on the web page.
    Dwight
  20. There are a couple of possible parts boards on...

    There are a couple of possible parts boards on ebay for $25 ea. Both are missing the multibus interface chip though. If you expect to run it in a system, that will be an issue.
    Dwight
  21. Is it that it isn't working or just the setup....

    Is it that it isn't working or just the setup. Usually the A model has only minor changes so one can setup the newer one without any issues. The features should be the same.
    Dwight
  22. http://www.bitsavers.org/pdf/intel/iSBC/148437-001...

    http://www.bitsavers.org/pdf/intel/iSBC/148437-001_iSBC_80_24A_Hardware_Reference_Manual_Nov85.pdf
  23. I wonder what Kier is using for storage. The BP...

    I wonder what Kier is using for storage. The BP isn't a USB master. I've fiddled with SD cards ( staying with the smaller/older ones, some of the newer stuff may require voltage control ). I'm not...
  24. In any case, Hugo didn't say, it is not related...

    In any case, Hugo didn't say, it is not related to your problem. They are there mainly to block RF interference from your computer to the outside world. As Hugo says, these often fail and for the...
  25. I do see no other Horizontal unfiltered control...

    I do see no other Horizontal unfiltered control than this path.
    Dwight
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4