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Thread: UDMA ribbon cable vs standard IDE? Is there such a thing?

  1. #1
    Jalapino
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    Question UDMA ribbon cable vs standard IDE? Is there such a thing?

    I thought I had read somewhere that there is a difference between the standard IDE cable and one use for UDMA drives. Is there such a cable and is so what are the difference? LIke is there 80 wires but 40pins, so they look the same or what? Thanks in advance!

  2. #2
    Regular Member
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    Post

    I think you might be thinkin of ATA/66 cables.. then again you might not be

  3. #3
    LikeAGlove
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    Post

    i was wondering the same thing.

    i've heard something to the effect of what Fixer is talking about, but wrt UDMA/33, the jury is still out for me.

    i had to do a lot of digging to find out how to enable and optimise DMA for NT4. i did it with the normal 40-pin cables.

    therefore, according to what i understand, 80-pin are not required for udma/33, but rather some other purpose (maybe special purpose mobos)

    just my $.02 (discounted because of the weakness of our currency)

    glove

  4. #4
    Jalapino
    Guest

    Talking

    Actually you are right Fixxer, that is what I think I am talking about. I just wanted to make sure I was right. There is such a thing right? I believe you need to use a as you call "ATA 66" cable to get the drive to use bandwith of the 66mhz bus right? You can use a standard IDE cable but wont you only achieve regular hard drive speeds? I assume the extra 40 wires in the 80 wire total help you double the bandwith going to and from, but I am not full sure about this. PLease help me understand if I am right or wrong. Thanks again!! Like I said I am not fully sure.



    [This message has been edited by Jalapino (edited 02-22-2000).]

  5. #5
    Hell_Yes
    Guest

    Post


    As I understand it, The "extra wires" help eliminate cross-talk. At high speeds inductance can be a problem

    David

  6. #6
    Jalapino
    Guest

    Post

    So back to my original question is there a different cable to use for UDMA drives other than the standard IDE cable? Like we have talked about earlier in the post?

  7. #7
    Moderator Bouncer's Avatar
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    Yes.

    ATA/66 cables have an 80 pin layout to minimise crosstalk, which is the only way to move beyond ATA/33.

    reference:

    https://www.ultracable.com/atas_faqs.html

    Regards,
    -Bouncer-

    ------------------
    "Yeah Baby, YEAH!!!"


  8. #8
    Jalapino
    Guest

    Thumbs up

    Thank you very much! That is exactly the info I have been looking for!

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