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    • 7. 发明授权
    • Disk storage control device including a sector number register and range
detection circuitry for reading and writing to a range of detectors
    • 磁盘存储控制装置包括扇区号寄存器和用于读取和写入检测器范围的范围检测电路
    • US5379397A
    • 1995-01-03
    • US790388
    • 1991-11-12
    • Yutaka IshikawaNoboru Sato
    • Yutaka IshikawaNoboru Sato
    • G06F3/06G11B19/02G06F12/06G06F13/00
    • G06F3/0601G11B19/02G06F2003/0692
    • An external memory control device which is capable of reducing the time required for processings such as write and read of data for the storage areas of an external memory device, such as a disk, is disclosed. The external memory control device includes a smallest sector number register and a largest sector number register which store the smallest and the largest sector numbers, respectively, within a processing range on a track that is designated by a processing request signal frokm a central processing unit, and a processing range detecting part which detects whether a sector number read from the designated track is within the processing range. In this external memory control device, if the sector number read from the designated track is within the processing range, the processings start from the next sector, so that waiting until the arrival of the smallest sector number is no longer needed, and the time required for processing per track can be reduced.
    • 公开了一种外部存储器控制装置,其能够减少诸如盘之类的外部存储装置的存储区域的数据的写入和读取等处理所需的时间。 外部存储器控制装置包括最小扇区号寄存器和最大扇区号寄存器,其最大和最大扇区号分别存储在由中央处理单元处理请求信号指定的轨道上的处理范围内, 以及处理范围检测部,其检测从指定轨道读取的扇区号是否在处理范围内。 在该外部存储器控制装置中,如果从指定轨道读取的扇区号处于处理范围内,则处理从下一个扇区开始,从而不再需要等待直到最小扇区号的到达,并且需要所需的时间 可以减少每个轨道的处理。