Memory
The Alpha has a 64-bit linear virtual address space with no memory segmentation. Implementations can implement a smaller virtual address space with a minimum size of 43 bits. Although the unused bits were not implemented in hardware such as TLBs, the architecture required implementations to check if they are zero to ensure software compatibility with implementations that implemented a larger or the full virtual address space.
Read more about this topic: DEC Alpha
Famous quotes containing the word memory:
“Always get rid of theory private object in this way: assume that it constantly changes, but that you do not notice the change because your memory constantly deceives you.”
—Ludwig Wittgenstein (1889–1951)
“For an actress to be a success, she must have the face of Venus, the brains of a Minerva, the grace of Terpsichore, the memory of a Macaulay, the figure of Juno, and the hide of a rhinoceros.”
—Ethel Barrymore (1897–1959)
“Near this spot are deposited the remains of one who possessed Beauty without Vanity, Strength without Insolence, Courage without Ferocity, and all the Virtues of Man without his Vices. This praise, which would be unmeaning Flattery, if inscribed over human ashes, is but a just Tribute to the Memory of BOATSWAIN, a Dog.”
—John Cam Hobhouse (1786–1869)