发明名称 |
Dual-port array with storage redundancy. |
摘要 |
<p>A method and system in a data processing system for providing a dual-port memory device having redundant data stored in multiple memory arrays. A first set of data and address latches, coupled to a first data port, are provided for storing data and address information. A second set of data and address latches, coupled to a second data port, are provided for storing data and address information. Each data port is coupled to a memory array. After an external memory access period, a cross-write circuit performs an internal cross-write operation by writing data into a second memory array in response to data previously written to a first memory array and stored in the first set of data and address latches, and writing data into a first memory array in response to data previously written to a second memory array and stored in the second set of data and address latches, wherein a redundant copy of data written to either the first or second memory arrays is created. <IMAGE></p> |
申请公布号 |
EP0600817(A2) |
申请公布日期 |
1994.06.08 |
申请号 |
EP19930480181 |
申请日期 |
1993.11.04 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
AIPPERSPACH, ANTHONY GUS;COX, DENNIS THOMAS |
分类号 |
G06F12/00;G06F12/08;G06F12/16;G11C11/401;G11C29/00;G11C29/04;(IPC1-7):G06F11/20 |
主分类号 |
G06F12/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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