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Tandy 1000 Upgrades.

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  • geoffm3
    replied
    Originally posted by Tupin View Post
    Still need help. Either both the floppy drives go on at the same time, only the 3.5 inch drive goes on, or neither go on. There's a cable with a black connector and a gray connector, the 5.25 inch drive has one edge connector, while the 3.5 inch has 2. Which ones go to where?
    Sounds like an addressing problem to me. You might have to move the drive select jumper on the disk if there's no twist in the ribbon cable. If the replacement floppy drive is sufficiently old enough it should have one. New ones have all but eliminated the DS jumper.

    Leave a comment:


  • Tupin
    replied
    Still need help. Either both the floppy drives go on at the same time, only the 3.5 inch drive goes on, or neither go on. There's a cable with a black connector and a gray connector, the 5.25 inch drive has one edge connector, while the 3.5 inch has 2. Which ones go to where?

    Leave a comment:


  • NathanAllan
    replied
    Getting lost over here. Does the floppy drive need that controller? My Tandy doesn't use that card, and it uses the power supply and no plug on the card at all. I'll open it up tomorrow and take pictures, see if we can compare notes. If necessary I might have a suitable drive extra.

    Leave a comment:


  • k2x4b524[
    replied
    Tupin, what i see on that adapter is the molex for the large plug, but NO power to the 3.5inch, i believe it lets you plug in the tandy drive and be able to use it in a standard pc, i would be careful when using that particular model of tandy floppy, the 4-pin mini and the lines for the power on the cable ARENT seperate on the drive, the traces connect into each other, if you use a standard cable, u will ground out the floppy and the power supply won't turn on, if you use the 4-pin with the standard cable, same thing will happen, the PS won't start, i believe that adapter rids u of that problem, or make a special cable by removing the ground pins one of the connectors, then marking that cable as specially modded.

    Leave a comment:


  • Tupin
    replied
    Okay, now there are bigger problems. The 3.5 inch drive responds, but it still doesn't read anything. The 5.25 wasn't working, so I switched the cable on the 3.5 from J2 to J3, and they both booted up, but neither responded.

    I'll use my Tandy 1000EX for now, I'm getting a DOS game in the mail soon.

    Leave a comment:


  • Tupin
    replied
    The Sony drive has a standard connector and four-pin power connector. That adapter gives it an edge connector and a bigger power connector.

    Leave a comment:


  • NathanAllan
    replied
    Looks liek it. I would think based on what AI am looking at, you would need a power cable from go from that larger plug to the one the drive uses.

    If the Sony drive you have uses the data cable for power, that drive might not work. See if you can find a plain vanilla floppy drive, your local thrift shops might have one in a five-dollar old machine.

    If that card is for a specific floppy drive, then it might not work at all. I'll look around, see if I can dig up an I/O card with a floppy drive header on it (if you need one). 8-bit ISA, right? Not the full length ISA card card? I'll start looking.

    Leave a comment:


  • Tupin
    replied
    So I could I take a floppy drive and replace it using that board?

    Leave a comment:


  • k2x4b524[
    replied
    the sony drive gets it's power from the date cable, not the molex cable, that little guy makes it so you can use the drive in a normal pc without modding a cable for the tandy, if the sony drive doesn't have a 4 pin mini plug on it, like the 3 of mine do.

    Leave a comment:


  • Tupin
    replied
    How do I change the jumpers?

    Got the drive out. It's a Sony MP-F63W-72D. I'll clean the drive head, and try again.

    Wait a second...This PCB on the edge comes right off. This looks like some sort of adapter to use a more modern floppy drive on a Tandy...

    Leave a comment:


  • vwestlife
    replied
    Originally posted by Tupin View Post
    Doesn't it need an edge connector type connection rather than pin type?
    The original Tandy 1000 can use standard floppy drives and any standard floppy drive cable. (The newer 1000 series machines integrated the power voltages with the drive connectors, requiring the use of specially modified floppy drives, but you don't have to worry about that.)

    The only thing to watch out for is that instead of putting a twist in the cable between the A: and B: drive connectors, Tandy used the Drive Select jumpers on the floppy drives themselves to configure the A: and B: drive positions. So when installing new floppy drives, you can either set their DS jumpers to match the proper Tandy configuration, or you can just replace the floppy drive cable with a standard PC cable with the twist, and then you won't have to worry about messing around with the jumpers on the drives.

    Leave a comment:


  • Tupin
    replied
    Doesn't it need an edge connector type connection rather than pin type?

    Leave a comment:


  • Lord Moz
    replied
    Originally posted by Tupin View Post
    The cleaning was going to be my next step. I don't know where I would find a 720kb floppy drive, can I just use a 1.44 MB one? I have one from an old Macintosh.
    You could use a PC 1.44MB one, but you will find the Mac floppy is not going to work, at least not easily. Apple supplies the power through the ribbon cable and many of their old floppy drives are also electronically ejected - i.e. no manual eject buttons. This also has additional signals on the ribbon cable.

    Find a PC 1.44MB drive. It will work as 720KB in a DD controller.
    __
    Trevor

    Leave a comment:


  • Tupin
    replied
    The cleaning was going to be my next step. I don't know where I would find a 720kb floppy drive, can I just use a 1.44 MB one? I have one from an old Macintosh.

    Leave a comment:


  • NathanAllan
    replied
    Originally posted by Tupin View Post
    Still gives me a "General Failure Error" when I try to format. I guess I need to clean it.

    Longshot, but if I were to make a DOS boot disk in Windows, would it read and boot a more recent DOS version?
    Not a double post, just posting as Tupin is posting.

    I have both 3.5 and 5.25 cleaning kits if you need them. Let me know if nothing else works. it could also be a bum floppy drive; gibberish data, not reading ot general error, might be indicitive of a bad drive.

    Leave a comment:

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