Winnie W Lau

6513106, Jan 28, 2003

Nov 26, 1999

09/449403

Winnie Lau - San Jose CA
Ronen Perets - Herzliyya, IL

LSI Logic Corporation - Milpitas CA

G06F 1200

711221, 711 5, 711170, 711217, 36523003, 3652385

A method and system for implementing a mirror addressing scheme in conjunction with a symmetrical data table are disclosed. The method includes receiving a first address. In response to determining that the first address corresponds to an upper portion of a data table, generating a second address from the first address, where the second address corresponds to a lower portion of the data table. The method further includes using the second memory address to access a memory array, whereby data corresponding to the upper portion of the data table is accessed from the lower portion of the data table. In one embodiment, determining that the first address corresponds to an upper portion of the data table is achieved by determining upper segment and lower segment boundaries for the first memory address determining that the most significant bit of the lower segment is asserted. Generating the second memory address from the first memory address may include complementing the lower segment of the first memory address and combining the complemented lower segment with the upper segment of the first memory address. In one embodiment, the method includes writing a buffer size register with a value indicative of the size of the number of entries in the symmetric data table.