Image Map Image Map
Page 5 of 6 FirstFirst 123456 LastLast
Results 41 to 50 of 57

Thread: Intrest in new ISA cards?

  1. #41
    Join Date
    Apr 2010
    Location
    Albany, OR USA
    Posts
    867
    Blog Entries
    1

    Default

    Quote Originally Posted by glitch View Post
    I'd been asked by several people about doing a kit run of Sergey's FDC board, and had thought myself about doing it with the addition of at least a 34-pin edge connector added on, if not a 37-pin D-SUB....
    Quote Originally Posted by Jimmy View Post
    The 37 pin D sub would the good. I would be interested.
    Quote Originally Posted by deathshadow View Post
    ...Last thing I need is another serial port...
    There's also the XT-FDC Picture HERE. An externally accessible 37 pin D sub can be used if the header on the right side of the picture is left off. I built one of these for my 5155 and it works great! This project kind of fizzled out early though before gaining much traction. I think boards for it can be bought HERE Scroll down to "Other (formerly known as "Mini") Boards" and the list shows that Tod Goodman has 40 of them for $12 each. I'm not sure how current that info is though.

    Greg

  2. #42
    Join Date
    Feb 2012
    Location
    Fort Walton Beach, Fl
    Posts
    503

    Default

    Yes I know I have build two of them, one of them originally for Thomas (Betta-Blue) and the other for myself.

    The one I have is in a 5160, I have not had any luck finding a card bracket for the 37 D-Sub connector.
    Also in my 5160, I have to take the case off in order to pull in or remove the cable.

    The XT-FDC version 1 had the 37 pin and the 34 pin reversed, not sure why it was changed in Rev. 2

    It really the reason, I made the comment about the 37 pin connector.

  3. #43

    Default

    Quote Originally Posted by deathshadow View Post
    and again why not just put the two to three DIN on the back instead of a breakout cable?
    Have you ever seen a PC card with a DIN connector on the bracket?
    I think there's not enough room for that...

    So give it a different IRQ and alter the drivers. That shouldn't be rocket science.
    For all the systems supporting PS/2 mice?
    Perhaps not rocket science, but still, lots and lots of work.
    Also, an XT with VGA, LAN, and sound, has no free IRQs, so what would be the preferred IRQ for PS/2 mouse? Probably 4, as with a PS/2 mouse, one hopefully no longer needs COM1.
    BTW: IBM PS/2 Model 30 is essentially an XT with PS/2 mouse port - which IRQ it uses?

  4. #44
    Join Date
    Mar 2011
    Location
    Atlanta, GA, USA
    Posts
    1,351

    Default

    Quote Originally Posted by Xacalite View Post
    Have you ever seen a PC card with a DIN connector on the bracket?
    I think there's not enough room for that...
    MiniDIN, yes. Bus mice cards. I believe that's where he was going with that suggestion. Though miniDIN to full DIN cables are harder to find than I first thought when I built the Tandy PLUS card with integrated HardMPU + XT-IDE.
    "Good engineers keep thick authoritative books on their shelf. Not for their own reference, but to throw at people who ask stupid questions; hoping a small fragment of knowledge will osmotically transfer with each cranial impact." - Me

  5. #45

    Default

    Quote Originally Posted by deathshadow View Post
    Which nobody seems to sell even just bare boards for, and seems a bit too complicated for its own good... and again why not just put the two to three DIN on the back instead of a breakout cable?
    It's open source, you can print your own PCBs. As has already been stated, DIN connectors are too large for expansion slots. You can go MiniDIN, but you still need special adapters or cables. So you're not gaining anything over a breakout cable.

    Quote Originally Posted by deathshadow
    Last thing I need is another serial port, but good to know the project exists. Shame again, nobody seems to make the boards or provide kits.
    Again, it's open source...Monotech is also selling assembled ones on ebay.

    Quote Originally Posted by deathshadow
    Which does jack good in a 8 bit slot particularly when most 16 bit cards don't provide the ROM -- they rely on the AT class ROM to provide that functionality.
    Wrong. It will work just fine in an 8-bit slot, with the exception of the IDE port. You can put an HD floppy ROM on your motherboard, a NIC, or an XT-IDE. You can also boot DR-DOS for HD floppy support, or load the 2M-XBIOS device driver.

    Quote Originally Posted by deathshadow
    So give it a different IRQ and alter the drivers. That shouldn't be rocket science.
    Besides the IRQ problem, PS/2 ports are handled by the keyboard controller. So you're going to have a port conflict with the onboard controller.

  6. #46
    Join Date
    Jul 2010
    Location
    Silicon Forest, Oregon, USA
    Posts
    686

    Default

    Quote Originally Posted by glitch View Post
    I'd been asked by several people about doing a kit run of Sergey's FDC board, and had thought myself about doing it with the addition of at least a 34-pin edge connector added on, if not a 37-pin D-SUB. As long as the correct filters available on the board, it'll also do single-density mode, important for those of us with pre-PC machines. However, some time ago, Sergey had contacted me regarding the details of the XT-IDE rev 3 or rev 4 sales (I forget how long ago it was), stating that he was thinking about doing larger runs of some of his boards and offering kits, too. I haven't heard back from him about that, but I didn't want to start running a derivative of his FDC board if he was going to do so himself.

    Anyone have current contact info for him?
    I am still around. And yes, I've been working on an 8-bit Multi I/O board. It got somewhat delayed because of other projects and life priorities. I'll drop you an e-mail in case you have some recommendations or ideas.

  7. #47
    Join Date
    Jan 2011
    Location
    Middletown, Maryland USA
    Posts
    145

    Default

    Restating my interest here...I'm definitely watching this with interest.

    - Alex

  8. #48

    Default

    Quote Originally Posted by Xacalite View Post
    Have you ever seen a PC card with a DIN connector on the bracket?
    I had thought they fit since that's where Zenith/Heathkits put their keyboard connector, since they used a passive backplane in the design.

    Or am I remembering that wrong?
    From time to time the accessibility of a website must be refreshed with the blood of owners and designers. It is its natural manure.
    CUTCODEDOWN.COM

  9. #49

    Default

    Quote Originally Posted by deathshadow View Post
    I had thought they fit since that's where Zenith/Heathkits put their keyboard connector, since they used a passive backplane in the design.
    Or am I remembering that wrong?
    Indeed, there were such SBCs.
    But they probably required special cases.

  10. Default

    On the Zenith, at least, the card has a wider-than-normal backplate for the DIN socket, with a corresponding notch in one of the slots on the rear panel.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •