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Figure 2–2: Word Format
15 | 0 |
:A
A word is specified by its address, the address of the byte containing bit 0.
A word is a
2.2.3 Longword
A longword is 4 contiguous bytes starting on an arbitrary byte boundary. The bits are num- bered from right to left, 0 through 31, as shown in Figure
Figure 2–3: Longword Format
31 | 0 |
:A
A longword is specified by its address A, the address of the byte containing bit 0. A longword is a
When interpreted arithmetically, a longword is a
Note:
Alpha implementations will impose a significant performance penalty when accessing longword operands that are not naturally aligned. (A naturally aligned longword has zero as the
2.2.4 Quadword
A quadword is 8 contiguous bytes starting on an arbitrary byte boundary. The bits are num- bered from right to left, 0 through 63, as shown in Figure
Figure 2–4: Quadword Format
63 | 0 |
:A