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:
“We turned to other things.
I haven’t any memory have you?
Of ever coming to the place again
To see if the birds lived the first night through.
And so at last to learn to use their wings.”
—Robert Frost (1874–1963)
“Then, lastly, let some weekly strewings be
Devoted to the memory of me:
Then shall my ghost not walk about, but keep
Still in the cool and silent shades of sleep.”
—Robert Herrick (1591–1674)
“I regard a love for poetry as one of the most needful and helpful elements in the life- outfit of a human being. It was the greatest of blessings to me, in the long days of toil to which I was shut in much earlier than most young girls are, that the poetry I held in my memory breathed its enchanted atmosphere through me and around me, and touched even dull drudgery with its sunshine.”
—Lucy Larcom (1824–1893)