发明名称 |
Method of data communication flow control in a data processing system using busy/ready commands |
摘要 |
A multiprocessor system includes a number of sub-processor systems, each substantially identically constructed, and each comprising a central processing unit (CPU), and at least one I/O device, interconnected by routing apparatus that also interconnects the sub-processor systems. A CPU of any one of the sub-processor systems may communicate, through the routing elements, with any I/O device of the system, or with any CPU of the system. Communications between I/O devices and CPUs is by packetized messages. Interrupts from I/O devices are communicated from the I/O devices to the CPUs (or from one CPU to another CPU) as message packets. CPUs and I/O devices may write to, or read from, memory of a CPU of the system. Memory protection is provided by an access validation method maintained by each CPU in which CPUs and/or I/O devices are provided with a validation to read/write memory of that CPU, without which memory access is denied.
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申请公布号 |
US6157967(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US19970001100 |
申请日期 |
1997.12.30 |
申请人 |
TANDEM COMPUTER INCORPORATED |
发明人 |
HORST, ROBERT W.;BAKER, WILLIAM EDWARD;ZALZALA, LINDA ELLEN;BUNTON, WILLIAM PATTERSON;CUTTS, JR., RICHARD W.;GARCIA, DAVID J.;KRAUSE, JOHN C.;LOW, STEPHEN G.;SONNIER, DAVID PAUL;WATSON, WILLIAM JOEL;WHITESIDE, PATRACIA L. |
分类号 |
G06F11/00;G06F15/173;H04L1/16;(IPC1-7):G06F11/00 |
主分类号 |
G06F11/00 |
代理机构 |
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代理人 |
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地址 |
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