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:
“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)
“It is not however, adulthood itself, but parenthood that forms the glass shroud of memory. For there is an interesting quirk in the memory of women. At 30, women see their adolescence quite clearly. At 30 a woman’s adolescence remains a facet fitting into her current self.... At 40, however, memories of adolescence are blurred. Women of this age look much more to their earlier childhood for memories of themselves and of their mothers. This links up to her typical parenting phase.”
—Terri Apter (20th century)
“The advantage of having a bad memory is that you can enjoy the same good things for the first time several times.”
—Friedrich Nietzsche (1844–1900)