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  • Good for low-performance embedded systems

    posted by James_C on 07/11/2007
    0

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:

    Low cost
    Use of CF flash card as ATA device
    More rugged
    Lower power utilization
    Nearly shock immune

    Cons:

    PIO mode ATA access
    Only one CF slot
    unwieldy to mount when not a standard format (not floppy, 3.5", 2.5", mounting)

    OtherThoughts:

    "Alan" is wrong. Slow performance is the fault of this adapter. It's not a matter of processing, it's a matter of pin signal connections to achieve DMA mode instead of PIO mode.

    Granted, you must have a DMA capable card, commonly denoted as CF3.0 spec (or higher) capable, but even with a CF3 or 4 card, if it's wired by the card to work in PIO mode, that is the limit on performance on any semi-modern card.

    It does not explain the prior poster's terrible performance, typically at least 6MB/s would be seen with a semi modern card capable of at least (that). It does still limit the peak though, if you want to use DMA on CF, you must have both the adatper and CF card that are capable.

    On the other hand, not every application requires DMA mode, to get some job done acceptibly at the very low cost of this adapter is possible. This is not what you want to build some equivalent-to-$600 SSD drive, but it is going to allow a system to run from CF in ATA mode, which is enough now that the low-end CF cards are under $10 per GB on special.

    Bottomline:

    It's $2 and it does adapt CF to IDE. For this price, accept what it can do instead of nitpicking about what it can't.

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