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This attribute specifies whether or not this transaction must be allocated if it is a read and it misses in the cache.
set_read_allocate() must set this attribute to the value passed
as argument. The method
is_read_allocate() must return the value of this
The value of this attribute must not be set to
true if the value of the
modifiable attribute is set to
The default value of this attribute must be
This attribute is specific to the AXI and ACE buses. It is ignored for transactions modeling transfers on the AHB and APB buses.