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Understanding something in a bsdl file

Discussion in 'Electronic Design' started by Didi, Feb 12, 2007.

  1. Didi

    Didi Guest

    I am converting a bsdl file to a private object format.
    The new thing this time are some entries which are fairly
    obvious, yet I would like some more certainty about them,
    if I can get it. Here is an excerpt:

    -- num cell port func safe [ccell
    dis rslt]
    "120 (BC_1, *, control, 1)," &
    "121 (BC_1, ext_ad_30, output3, 1, 120, 1,
    Z)," &
    "122 (BC_1, ext_ad_30, input, X)," &

    The line containing the new part is the one with "output3".
    Obviously its tristate control cell is 120; I wonder what "safe"
    means,
    just preferred initial state to preload the bsr with? Then "dis" and
    "rslt", do they mean that if I set the control cell (bsr bit 120) to 1
    the
    output state will be Z? Looks obviously the case but given the
    stakes (smoke on error etc.) I would be grateful for any additional
    clarity.

    Thanks,

    Dimiter
     
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