| 摘要 |
<p>In a microcomputer (10), an address mapper (28) allows the user to selectively map a resource (20, 22) which is ordinarily addressable in one portion of the address range of the microcomputer (10) into a correspondingly sized area elsewhere in the address range. Using a resource map address stored by the user in an addressable map register (32), the mapper (28) continuously compares the map address to a corresponding number of bits on the microcomputer's address bus (16). When a match is detected, the mapper (28) enables the address decoder (44, 38) of the mapped resource (20, 22). The mapper (28) can also map the map register (32). Since the mapper (28) can map more than one resource, an interlock mechanism resolves access conflicts.</p> |
