Changes between Version 19 and Version 20 of CacheCoherence


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Timestamp:
Jan 21, 2013, 4:25:22 PM (12 years ago)
Author:
alain
Comment:

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  • CacheCoherence

    v19 v20  
    6767 * A '''LL (Linked Load)''' transaction can target any single word contained in a memory cache. The response returns two 32 bits values that are the addressed data value, and a signature that has been allocated by the memory cache to this LL reservation. This means that the VCI command packet contains one flit and the VCI response packet contains two flits.
    6868
    69  * A ''' SC (Store Conditionnal)''' transaction can target any single word contained in a memory cache. The command must transport both the new data value and the signature
    70 obtained after the LL transaction. The response returns only a Boolean indicating failure/success for the SC transaction. This means that the VCI command packet contains two flits and the VCI response packet contains one flit.
     69 * A '''SC (Store Conditionnal)''' transaction can target any single word contained in a memory cache. The command must transport both the new data value and the signature obtained after the LL transaction. The response returns only a Boolean indicating failure/success for the SC transaction. This means that the VCI command packet contains two flits and the VCI response packet contains one flit.
    7170
    7271 * A '''CAS (Compare & Swap)''' transaction can target any single word contained in a memory cache. The command must transport both the old data value and the new data value. The response returns only a Boolean indicating failure/success for the CAS transaction. This means that the VCI command packet contains two flits and the VCI response packet contains one flit.