| 摘要 |
<p>The virtual addressing buffer circuit (10) formats the output address utilizing a format register (16) as a combination of new address bits and original input address bits. The ability to format the output address enables the user to replace certain address bits without requiring that the entire address be replaced. The virtual addressing buffer controls the output of several command signals to external circuits to indicate how the system should respond to the address output from the virtual addressing buffer. The command signals are controlled by a command register (20) and are output from the virtual addressing buffer only when an address match has been verified. The virtual addressing buffer circuit filters out certain bits of an input address as indicated by a filter register (22) before it verifies that the input address matches a stored address. Once an address match has been detected, the virtual addressing buffer circuit replaces the entire input address with a new formatted address.</p> |
