| 术语 | block transfer function |
| 释义 | block transfer function 块［成组］传送操作程序;［块转移功能］ A microcoded sequence executed by the input／output (I／O) processor that allows high-speed transfer between a source and a destination address as defined by a user program. When source destination data widths differ, the microcode auto- matically compensates for word alignment and bus width, making the most efficient use of the available bus bandwidth. The block transfer function supports three synchronization options: free running, source sync, and destination sync. In addition, it supports four transfer modes: port-to-port, buffer-to-port, port-to-buffer, and buffer-to-buffer. 输入输出处理机执行的一种微代码序列,允许在用户程序定义的源地址和目的地址之间 进行高速传送。源目的地数据宽度不同时,微指令自动补偿字的组合和总线宽度,使可用的 总线带宽得到最有效的利用。块传送功能支持三种同步选择:空转、源同步和目的同步。 此外,它支持四种传送方式:端口到端口、缓冲器到端口、端口到缓冲器和缓冲器到缓冲器。 |
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