发明名称 |
Microprocessor hold and lock circuitry. |
摘要 |
<p>A logic circuit external to a microprocessor monitors selected processor I/O pins to determine the current processor cycle and, in response to a hold request signal, drives the processor into a hold state at the appropriate time in the cycle. The logic circuit also includes a "lockbus" feature that, when the processor is not idle, "locks" the microprocessor to the local CPU bus for a predetermined period of time immediately after the processor is released from a hold state.</p> |
申请公布号 |
EP0404413(A2) |
申请公布日期 |
1990.12.27 |
申请号 |
EP19900306342 |
申请日期 |
1990.06.11 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BEGUN, RALPH MURRAY;BLAND, PATRICK MAURICE;DEAN, MARK EDWARD |
分类号 |
G06F13/36;G06F13/28;G06F13/362 |
主分类号 |
G06F13/36 |
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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