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我们研制了一台磁盘驱动测试仪,可用于检查和维修几种不同接口的磁盘驱动器,如与 APPLE-II型微机配套使用的软盘驱动器等。该仪器设计中采用了8031单片机,不仅大大降低了成本,而且增加了测试功能。该仪器能进行寻道检查、读/写功能检查、磁头选择功能检查,可测试采用 ST506/412接口的磁盘驱动器的转速,转速值直接用十进制数字显示。下面介绍该仪器的工作原理及软件设计。一、硬件电路硬件电路框图如图1所示。
We have developed a disk drive tester that can be used to inspect and repair several different disk drives, such as the floppy disk drive used with the APPLE-II microcomputer. The instrument used in the design of the 8031 microcontroller, not only greatly reduce costs, but also increase the test function. The instrument can perform seek check, read / write function check, head selection function check, can test the speed of the disk drive using ST506 / 412 interface, the speed value is directly displayed in decimal numbers. The following describes the working principle of the instrument and software design. First, the hardware circuit Hardware circuit diagram shown in Figure 1.