Image Map Image Map

Search:

Type: Posts; User: Chuck(G)

Page 1 of 20 1 2 3 4

Search: Search took 0.37 seconds.

  1. Replies
    6
    Views
    56

    The use of a NiMH or NiCd battery in this...

    The use of a NiMH or NiCd battery in this application has always confused me. The CMOS RTC draws but 50 microamps or so in quiescent mode. On the other hand, an NiMH or NiCd battery...
  2. Replies
    37
    Views
    2,678

    Mobile coverage is still crap out here--I get 3G...

    Mobile coverage is still crap out here--I get 3G and one bar.
    PagePlus does it for me--I get a phone that I can at least make calls with for $10/month. Forget apps and web browsing.
  3. Replies
    101
    Views
    6,206

    Almost every manufacturer of an MPU offered a...

    Almost every manufacturer of an MPU offered a development system. This extends to AMD, National Semi, General Instruments, TI, etc. That's why I'm a bit nonplussed about the Mostek one.
  4. Replies
    101
    Views
    6,206

    What makes this system special? Is it any more...

    What makes this system special? Is it any more so than, say, an Intel MDS or Zilog MCZ?
  5. Replies
    6
    Views
    56

    That's because the external battery jumper isn't...

    That's because the external battery jumper isn't intended for rechargeable batteries, but for primary batteries. Just get a 3x or 4x AA or AAA battery holder and some alkaline cells. You'll be...
  6. Replies
    48
    Views
    7,640

    ...and of course, I published actual source code...

    ...and of course, I published actual source code for communicating with the BP floppy device. But the links were scrambled in the vintage-computer-to-vcfed changeover. And I can't go back and edit...
  7. Replies
    0
    Views
    52

    Note on NEC 765A family FDCs

    I was asked a question about the 765 and I couldn't find a definitive answer. The question goes like this: "If the 765 is executing a "Read TracK" does it pay any attention to the sector ID address...
  8. What, you can't read binary from toggle switches...

    What, you can't read binary from toggle switches as easily as you read LEDs? You need more practice. :)
  9. Replies
    7
    Views
    168

    As opposed to say, "Flying Pigeon"?

    As opposed to say, "Flying Pigeon"?
  10. Replies
    7
    Views
    168

    Yup, MS sold MSDOS to various OEMs for...

    Yup, MS sold MSDOS to various OEMs for distribution.
  11. On what machine? And what radix?

    On what machine? And what radix?
  12. Why not retrofit it with a modern nATX board,...

    Why not retrofit it with a modern nATX board, power supply and LCD monitor? You should have more than enough room to do it.
  13. That's just my point. Stick an AM radio next to...

    That's just my point. Stick an AM radio next to your CPU and listen to the noise. Have the computer actuate a solenoid to fire off fireworks. LEDs are not a requirement.
  14. I retrofitted an ASUS Athlon XP board with an...

    I retrofitted an ASUS Athlon XP board with an XP-M to get the unlocked multiplier. It's not too hard--just a couple of wiring alternations. It works well.
  15. Not just looks--you'll actually get a bit of...

    Not just looks--you'll actually get a bit of corrosion resistance.

    The stuff I linked to give a matte gray finish; perhaps you want a brighter finish? try this
  16. Replies
    16
    Views
    254

    I suspect an industrial controller/network card. ...

    I suspect an industrial controller/network card. Likely to be of no use unless you find drivers specific to it.
  17. I'd liken LEDs more as an output device--i.e. a...

    I'd liken LEDs more as an output device--i.e. a tachometer on a car. You don't really need one.
  18. You're more patient than I would have been. The...

    You're more patient than I would have been. The rust has eaten off the zinc plating on the parts, so you might as well take wire wheel to the rusty areas and get rid of the corrosion altogether,...
  19. Try reading or writing a bunch of disks using...

    Try reading or writing a bunch of disks using IMD (use the disk-to-file and file-to-disk function) If there's a hardware problem, it should show up.

    On the off-chance, you don't have any other...
  20. Replies
    16
    Views
    254

    That large NEC chip is an 8085 CPU. This isn't...

    That large NEC chip is an 8085 CPU. This isn't a simple comms card.
  21. Sure, but before I ever did that, I punched my...

    Sure, but before I ever did that, I punched my machine code into cards or entered it on the console typewriter. On the CDC 6000, the bootstrap was entered by means of a toggle switch matrix, but no...
  22. I'm sorry; I must be dense. I don't follow. ...

    I'm sorry; I must be dense. I don't follow. You need an input device of some sort and you need an output device of some sort. What does machine code or assembly or LEDs have to do with it? You...
  23. Well, that's one reason that the 765 features a...

    Well, that's one reason that the 765 features a software reset line. :)

    But if you look at the MSDOS code, "General Failure" can come from a variety of places. For example, if the layout of the...
  24. Howso? I've programmed bare iron in machine...

    Howso? I've programmed bare iron in machine language with no LEDs. Of course, you need some sort of I/O to satisfy the basic function of a computer.
  25. I read the thread title for what it was. eeguru...

    I read the thread title for what it was. eeguru could just as well have devised an LED peripheral for an S100 system that displayed address and data lines, even if there wasn't already one. Do...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4