发明名称 |
Data processing system and memory controller for lock semaphore operations |
摘要 |
A local processor is connected to one port of a dual port memory controller. A bus having a BURST signal line is connected to the other port. The memory controller controls access to a local memory. A remote processor can perform a semaphore operation on a semaphore stored in the local memory by translating a LOCK signal from the remote processor into a bus BURST signal that is activated for a period allowing the remote processor to read and modify the semaphore. While the semaphore operation is being performed, the local processor can access the local memory.
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申请公布号 |
US5293491(A) |
申请公布日期 |
1994.03.08 |
申请号 |
US19900635896 |
申请日期 |
1990.12.28 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORP. |
发明人 |
LEUNG, WAN L.;KELLEY, RICHARD A.;MCDERMOTT, LESLIE F. |
分类号 |
G06F13/18;G06F9/52;G06F13/16;G06F13/28;G06F15/16;G06F15/167;G06F15/177;(IPC1-7):G06F13/00 |
主分类号 |
G06F13/18 |
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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