发明授权
US5487171A System for reading and stopping reading data from magnetic tape into memory in response to mount command and write command respectively from the system processor 失效
响应于来自系统处理器的安装命令和写入命令,读取和停止从磁带读取数据到存储器的系统

System for reading and stopping reading data from magnetic tape into
memory in response to mount command and write command respectively from
the system processor
摘要:
In response to the mounting of a magnetic tape on the tape drive, the tape drive begins reading data from the tape into the preload buffer while concurrently signalling the data processor that the tape drive is instantaneously available to read/write data. The data processor can then begin the data transfer operation without incurring the delay occasion by media set up time. The data that is transferred from magnetic tape is stored in the preload buffer in anticipation of the data processor issuing a data read command. Upon receipt of the data read command, the tape drive reads the data out of the preload buffer to the data processor via the data channel while simultaneously reading data from the magnetic tape into the preload buffer.
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